भारत सरकार वि%द्युत मंत्रालय केंद्र ीय वि% द्य ुत

Minutes of 3rd meeting of Southern Regional Power Committee (Transmission Planning)

भारत सरकारGovernment of India

वि�दु्यत मंत्रालयMinistry of Power

कें द्र ीय वि� द्य ुत प्र ा वि� करणCentral Electricity Authority

वि� द्य ुत प्र णाली योजना ए� ं म ू ल् या ंकन प्र भाग -I

Power System Planning & Appraisal Division-I

से�ा में / To,

संलग्न सचूी के अनसुार As per enclosed list

वि�षय : दवि ण ेत्र वि�द्युत सविमवित (पारेषण योजना) की तीसरी बैठक का काय&�ृत।Subject: Minutes of 3rd meeting of Southern Regional Power Committee (Transmission

Planning) [SRPC(TP)].

महोदया(Madam) / महोदय(Sir)

The 3rd meeting of Southern Regional Power Committee (Transmission Planning)[SRPC(TP)] was held on 24.08.2021 through VC (Microsoft Teams).

Minutes of the meeting are attached for kind information.

भ�दीय/Yours faithfully,

(ईशान शरण / Ishan Sharan)

मुख्य अविभयंता / Chief Engineer

Copy for kind information to:1) PPS to Member (Power System), CEA

1

File No.CEA-PS-12-14(12)/1/2018-PSPA-II DivisionI/18213/2021

1006


List of addressee:

1. Member Secretary, Southern Region Power Committee, 29, Race Course Cross Road, Bangalore 560 009.

FAX : 080-22259343

2. Chief Operating Officer (CTUIL), “Saudamini” Plot No. 2, Sector-29, Gurugram-122001 Tel. No. 0124-2571816

3. Director (System Operations), POSOCOB-9, Qutub Institutional Area,Katwaria Sarai, New Delhi-110016

4. Managing Director Karnataka Power Transmission Corp.Ltd., Cauvery Bhawan,

Bengaluru - 560 009.5.Chairman and Managing Director,

Transmission Corp. of Andhra PradeshLtd.,

(APTRANSCO) Gunadala, Eluru Road, Vijayawada, Andhra Pradesh

6. Chairman-cum-Managing Director Transmission Corp. of Telangana Ltd.,

(TSTRANSCO) Vidyut Soudha, Khairatabad Hyderabad – 500 082.

7. Chairman-cum-Managing Director, Kerala State Electricity Board, Vidyuthi Bhawanam, Pattom, Thiruvananthapuram - 695 004.

Fax : 0471-2444738

8. Managing Director,Tamil Nadu Transmission CorporationLtd (TANTRANSCO),

6th Floor, Eastern Wing, 800 Anna Salai, Chennai - 600002. Fax : 044-28516362

9. The Superintending Engineer –I, First Floor, Electricity Department, Gingy Salai, Puducherry – 605 001.

Fax: 0413-2334277/2331556

10. Executive Engineer, Divisional Office, Lakshadweep Electricity Department, Kavaratti Island, UT of Lakshadweep

11. Chairman & Managing Director, NTPC Limited,NTPC Bhawan,SCOPE Complex, Institutional Area, Lodhi Road, New Delhi – 110003

12. Chairman & Managing Director, NHPC Limited, N.H.P.C. Office Complex, Sector-33, Faridabad - 121003 (Haryana)

13. Chairman, Solar Energy Corporation of India

Limited, 1st Floor, D-3, A Wing, Primus Platinum

Building, District Centre, Saket, New Delhi – 110017

Other invitees:

Director (Operations), NPCIL, [email protected]

Director (Power), NLC India LimitedNeyveli, Tamil [email protected]

Director (Planning & Projects),NLC India LimitedNeyveli, Tamil [email protected]

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1007

mailto:[email protected]



Minutes of 3rd meetging of Southern Regional Power Committee (Transmission

Planning)

Date: 24.08.2021 Time: 10:30AM

List of participants is enclosed at Annex-A.

Member (Power System), CEA, and Chairman of RPC (TP) welcomed the participants andstated that the meeting could not be scheduled on time due to prevailing conditions ofCOVID-19 pandemic.

Chief Engineer (PSPA-I), CEA, stated that most of the proposals of transmission systemaugmentation as received from the SR constituents had already been discussed in the jointstudy meetings held on 04.02.2021 and 19.05.2021. He requested Director (PSPA-I), CEA, totake up the agenda items for discussion.

1. Confirmation of the Minutes of 2nd Meeting of Southern Regional Power Committee(Transmission Planning) [SRPC(TP)]

1.1. Director (PSPA-I), CEA informed that minutes of 2nd Southern Regional Power Committee

(Transmission Planning) [SRPC (TP)] meeting held on 01.10.2020 through VC, were

circulated vide letter No. CEA-PS-12-14(12)/1/2018-PSPA-II Division-Part (2) I/12514/2020

dated 03.12.2020.

1.2. As no comments/observations on the minutes were received from the constituents, the

minutes of 2nd SRPC(TP) meeting issued vide CEA letter no. CEA-PS-12-14(12)/1/2018-

PSPA-II Division-Part (2) I/12514/2020 dated 03.12.2020 were confirmed.

A. ToR 2(i) – QUARTERLY REVIEW AND STRENGTHNING OF INTER-REGIONALTRANSMISSION SYSTEM

2. Quarterly Review of transmission lines and substations

2.1. List of transmission lines and substations/ICTs commissioned in Southern Region during FY

2020-21 and Q1 of FY 2021-22 are attached as Annex-2.

Gist of transmission lines and substation/ICTs commissioned in Southern Region in FY

2020-21

State Transmission Line (ckm) Sub Station (MVA)

765kV 400kV220/230k

V765kV 400kV

220/230kV

Andhra Pradesh 0 127 734 0 1760 1730

Telangana 0 13 197 0 0 200

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1008



765kV 400kV220/230k

V765kV 400kV

220/230kV

Karnataka 0 2 578 0 2500 1400

Kerala 0 176 280 0 0 1320

Tamil Nadu 0 104 548 0 0 910

Puducherry 0 0 0 0 0 0

ISTS 0 884 0 0 1130 0

Total 0 1306 2337 0 5390 5560

HVDC-800 kV 3531 3000

HVDC-320 kV 288 1000

TSTRANSCO informed that in addition, the following substations were commissioned

during FY 2020-21:

400/11 kV Tukkapur lift irrigation system S/s

400/220/11 kV Sundila lift irrigation system S/s

220/11 kV Annaram lift irrigation system S/s

220/11 kV Medigadda lift irrigation system S/s

220 kV Imlibun S/s

Gist of transmission lines and substation/ICTs commissioned in SR in Q1 of FY 2021-22


765kV 400kV220/230k

V765kV 400kV

220/230kV

Andhra Pradesh 0 0 49 0 500 80

Telangana 0 0 155 0 315 1147

Karnataka 0 0 0 0 0 100

Kerala 0 0 0 0 0 0

Tamil Nadu 0 0 0 0 0 200

Puducherry 0 0 0 0 0 0

ISTS 0 0 0 0 0 0

Total 0 0 204 0 815 1527

HVDC-320 kV 1000

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3. Assessment of growth in generation capacity and demand in the region

3.1. The installed generation capacity in Southern Region is as under (as on 30.06.2021):

State Coal(MW)

Hydro(MW)

RES(MW)

Gas (MW)

DG(MW)

Nuclear(MW)

Total(MW)

Andhra Pradesh

5010 1673.6 56.18 235.4 0 0 6975.18

Telangana 5972.5 2479.93 41.22 0 0 0 8493.65

Karnataka 5020 3586.6 193.89 0 0 0 8800.49

Kerala 0 1856.5 178.9 0 159.96 0 2195.36

Tamil Nadu 4320 2178.2 122.7 524.08 0 0 7144.98

Puducherry 0 0 0 32.50 0 0 32.50

Central Sector 15225.02 0 541.90 359.58 0 3320.00 19446.50

Private 12997 0 43702.97 5340.24 273.7 0 62313.91

Total 48544.52 11774.83 44837.76 6491.80 433.66 3320.00 115402.57

3.2. The actual/anticipated electricity demand of states in Southern Region are as under:

Peak Demand (in MW) according to 19th EPS Actual PeakDemand (MW)

State 2020-21 2021-22 2024-25 2020-21Andhra Pradesh 11021 11843 14656 11193

Telangana 13757 14499 16885 13688

Karnataka 13534 14271 16674 14367

Kerala 5021 5263 6034 4269

Tamil Nadu 19240 20273 24225 16263Puducherry 561 583 655 429

Total 59581 62975 74666 58395

3.3. The anticipated capacity addition in the states of Southern Region during the period 2021-22

to 2024-25 is as given below.

StateCoal

(MW)Hydro(MW)

Gas(MW)

Solar(MW)

Wind(MW)

Nuclear (MW)

Total(MW)

Andhra Pradesh 2200 1250 0 9750 150 0 0

Telangana 4000 0 0 19.60 0 0 4019.60

Karnataka 0 0 370 1192 3489 0 0

Kerala 0 140 0 1200 78 0 1418

Tamil Nadu 5700 2500 0 1500 1285 0 109850

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StateCoal

(MW)Hydro(MW)

Gas(MW)

Solar(MW)

Wind(MW)

Nuclear (MW)

Total(MW)

Puducherry - - - - - - -

Central Sector 3420 0 0 0 0 2500 00

Private 525 0 0 0 0 0 0

Total 15845 3890 370 13661.60 5002 2500 41268.60

Members noted the same.

4. Requirement for strengthening of Inter-regional transmission system

4.1. Director, CEA, stated that MoP vide OM dated 20th May, 2021 amended ToR of NCT (copy

enclosed at Annex-4) This OM further mention that:

“2(i) The Regional Power Committees (Transmission Planning) can make meaningful

recommendations only regarding their own Region. They cannot decide on transfers across

region.”

4.2. Therefore, it is proposed not to discuss Inter-regional transmission system in this meeting to

ensure compliance of the above OM at this stage. Once all-India level generation or

surplus/deficit scenario get confirmed in NCT, the same would be informed in the next

meeting.

Deliberations in 3 rd SRPC(TP) Meeting

4.3. Representative of TANTRANSCO stated that the amended ToR of NCT notified by MoP is

contrary to the provisions of CERC Planning Regulations, 2019. Discoms/STUs have played

active role in the process of planning and approval of the Inter State Transmission System

(ISTS) and the entire investment cost of ISTS schemes are recovered from the Distribution

Companies as per the CERC (Sharing of Inter-State Transmission charges and Losses)

Regulations. Hence, the inter-regional transmission schemes need to be discussed in the

RPC(TP) meetings of respective regions. TANTRANSCO representative further added that

the issue was addressed to Secretary, Ministry of Power, for suitable amendment of ToR of

RPC (TP) and NCT.

4.4. Member (Power System), CEA, stated that amendment of ToR of RPC (TP) and NCT is

under the purview of MoP. Members noted the same.

5. Review of Transmission system by system operator

5.1. ICT Constraints: Director (PSPA-I), CEA, informed that SRLDC in its quarterly report for

January, 21 - March, 21 (Q4: 2020-21) has mentioned that 19 nodes were not complying to

'N-1' contingency for transformation capacity. Details of nodes are given below.

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Sl.No.

ICTSeason/ Antecedent Conditions

Description of theconstraints

Deliberations in 3rd SRPC (TP) meeting

1.400/220 kV 2x500 MVAICTs at Kolar

Whole Year

'N-1' not satisfied for1% in Jan, 14 % in Feb, 27% in March.

1x500 MVA, 400/220 kV ICTaugmentation agreed at Kolar. Referitem-15.

2.400/220 kV 2x500 MVAICTs at Kaiga

Whole Year

'N-1' not satisfied for18% in Jan, 16% inFeb, 14% in March.The 2x220 MWUnits at Kaiga,Kadra (150 MW)and Kodasalli (120MW) generation iscompletely injectedinto the 400 kVsystem through theseICTs due to openingof 220 kV Kodasalli– Nagjheri D/C inview of 220 kVsystem overload.

In 1st SRSCT meeting, re-conductoringof following lines with HTLSconductor had been agreed: 220 kV Nagjheri – Ambewadi DC

line, 220 kV Ambewadi – Narendra D/C

line, 220 kV Kaiga – Kodasally S/C line 220 kV Kadra – Kodasally S/C line

With reconductoring of the lines,loading capability & availability oflines will increase. Accordingly loadingon ICTs was expected to be reduced.

Representative of KPTCL informed thatreconductoring works were delayedbecause of RoW issues as the linecorridor is falling under Western ghatarea. He added that the reconductoringwork is in tendering stage and the workis expected to be completed by March,2024. CGM, SRLDC added that KPTCL hasto implement SPS to avoid the trippingof ICTs at Kaiga S/s and subsequenttripping of generating units at Kaigaduring contingencies. However, SPS hasnot yet been implemented. Theimplementation of modified SPS hadbeen agreed in January, 2019.Member (Power System), CEA, advisedKPTCL to complete the reconductoringwork at the earliest. He advised MemberSecretary (I/c), SRPC, to discuss andresolve the issues in implementation ofSPS with KPTCL.

3. 400/220 kV 3x500 MVAICTs at Nelamangala

Whole Year

‘N-1’ not satisfiedfor 2% in Jan, 10%in Feb, 28 % inMarch.

KPTCL informed that the followingsubstations are under implementaionstage which would reduce the loadingon ICTs at Nelamangala S/s: 2x500 MVA, 400/220 kV Peenya S/

s: LOI is issued on 26.07.2021 andtarget date of implementation isJanuary, 2024.

3rd 500 MVA ICT at Devanhalli S/s: LOI is issued on 26.07.2021 and

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Sl.No.




target date of implementation isMarch 2023.

Establishing 400/220 kV S/s atHuliyurdurga, Tumakuru District:Land has been acquired and targetdate of implementation is March,2024.

4.

400/220 kV 2x315 + 1x500 MVAICTs at Mysore

Whole Year

'N-1' not satisfied for24% in Jan, 44% inFeb, 69% in March.

KPTCL informed that 3rd ICT is notrequired as the loading on Mysore ICTswould reduce after commissioning ofKadakola S/s in Mysore district. Targetdate of implementation of Kadakola S/sis March 2024. Refer item no 15.

5.

400/220 kV 2x315 MVA ICTsat Cochin

Whole Year

'N-1' not satisfied for2 % in March.

Issue will resolve with transformationcapacity augmentation by 1x500 MVA,400/220 kV ICT (3rd), alreadydiscussed and agreed in 2nd SRPC(TP)and 4th NCT.

It was informed that the 3rd ICT hasalready awarded to POWERGRID forimplementation under RTM vide MoPOM dated 16th July, 2021.

6.400/220 kV 3x315 MVA ICTs at Vemagiri

High demand Scenario of SR

'N-1' not satisfied for7% in Jan, 12% inFeb, 38 % in March.

APTRANSCO informed that 4th ICT of500 MVA at Vemagiri has beencommissioned on 30.04.2021 and now ,loading on ICTs is normal.

7.400/220 kV 2x315 MVA ICTs at Narnoor

High demandScenario of SR

'N-1' not satisfied for16% in Jan, 22% in Feb, 1% in March.

Proposal of 3rd ICT is under discussionin APTRANSCO and the observationswill be furnished to CEA shortly.However, an alternate arrangement hasbeen made in the 1st week of March,2021 in 220 kV Bus at 400 kV GhaniSS.With this arrangement, loading on ICTsat Narnoor would be reduced. Thesame is expected to be commissionedby April, 2022.

8.400/230 kV 3x315 MVA ICTs at Hosur



As per TANTRANSCO, ICTaugmentation may not be required asthe ‘N-1’ violation is very meagre.Further, after commissioning ofUthanapalli – Palavadi 230 kV D/cline, the load will be diverted fromHosur S/S and there will not be anyconstraint in future.

9. 400/220 kV 2x500 MVA ICTs at Narendra



KPTCL informed that loading wouldbe reduced on Narendra S/s aftercommissioning of planned 400/220 kVLokapur S/s. Lokapur S/s is under planning stage.

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Sl.No.




Refer item 27.

10.400/230 kV 2x250 MVA ICTs at NeyveliII TPS


'N-1' not satisfied for39 % in Mar.

It was decided that Neyveli TS-II -Cuddalore 400 kV D/c line would beimplemented by TANTRANSCO toreduce the loading on ICTs at NeyveliII TPS. Refer item no. 7 of the minutes.TANTRANSCO suggested that shiftingof the NLC TS II Unit-IV connectivityfrom 400 kV side to 230 kV side wouldmitigate the overloading issue of 2x250MVA ICTs at NLC TS-II. It wasdecided that the same would bediscussed in next SRPC (TP) meeting.

11.400/220 kV 2x315 MVA ICTs at Hassan


'N-1' not satisfied for5% in Feb, 7% in March.

KPTCL informed that loading on ICTsat Hassan is expected to reduce withcommissioning of planned 400/220 kVHampapura S/s. The substation wouldbe implemented by 2025.

12.

765/400 kV 2x1500 MVAICTs at Nizamabad


'N-1' not satisfied for1% in January.

Augmentation of 1x1500 MVA, 765/400 kV ICT (3rd) at Nizamabad hasbeen approved. Refer item No. 15.

13.

400/220 kV 2x315 + 2x250 MVA ICTs at Ramagundam STPS


'N-1' not satisfied for5% in Jan, 12% in Feb, 34% in March.

TSTRANSCO informed that load of140 MW would be shifted to othersubstation, so the loading onRamagundam S/s would be relieved.

14.

400/220 kV 2x315 MVA ICTs at Suryapet


'N-1' not satisfied for1% in February.

With implementation of Yadadrigeneration linked scheme, loading onSuryapet ICT is expected to bereduced. Tentative schedule ofimplementation is one year.

15.

400/220 kV 3x500 MVA ICTs at Somanahalli

High demand Scenario ofSR

'N-1' not satisfied for1% in Jan, 1% in Feb, 5 % in March.

KPTCL to expedite implementation of: 2x500 MVA, 400/220 kV

Domasandra S/s 220 kV line terminating at 3x500

MVA, 400 /220 kV Mylasandra S/sWith above, loading on ICTs onSomanhalli is expected to be reduced.

KPTCL informed that: 2x500 MVA, 400/220 kV

Domasandra S/s is expected to becommissioned within 22 months.

220 kV line terminating at 3x500MVA, 400 /220 kV Mylasandra S/shas been commissioned along withMylasandra S/s.

16.400/230 kV 2x315 MVA

High demand 'N-1' not satisfied for

With implementation of 2x200 MVA,400/110 kV ICTs and 1x500 MVA,

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Sl.No.




ICTs at Thiruvalam

Scenario ofSR

3% in March.

400/230 kV 3rd ICT at Tiruvalam,loading on ICTs will be reduced.

TANTRANSCO informed that 1x500MVA, 400/230 kV, 3rd ICT atThiruvalam has been already approvedin the 42nd meeting of SCPSPSR.

17.400/220 kV 2x315 MVA ICTs at UPCL

High demandScenario in SR

'N-1' not satisfied for9% in Jan, 31% in Feb, 29 % in March.

KPTCL informed that they areplanning to implement 2x500 MVA,400/220 kV Arasapadavu S/s. Theloading on UPCL would be reducedafter commissioning of Arasapadavu S/s by December, 2024.

18.

400/132 kV, 250 MVA ICT atRamagundam STPS

-

Limiting constraint for State Drawl capability. N-1 of 400/220 kV ICT would result in over loading.

TSTRANSCO informed that part of load would be shifted to other substation.

19.

400/110 kV, 2x200 MVA ICTs at Salem SS

Whole year

Limiting constraint forState Drawl capability. 'N-1' of ICTs would result in over loading.

TANTRANSCO informed that 1x200MVA, 400/110 kV ICT (3rd) at Salem400/230 kV SS was commissioned on23.07.2021.

In addition to the above, following ICT Constraints reported by SRLDC in Q1 of 2021-22 (April, 21 – June, 21) were also discussed:

Sl.No.

ICT Season/AntecedentConditions


Deliberations in 3rd SRPC (TP)meeting

1.

400/230 kV 2x315+1x500 MVA ICTs at Allundur S/s

Whole year

Limiting constraint for S1-S2 drawl capability.‘N-1’ not satisfied for11% in April and 1% in May

As per TANTRANSCO, ICTaugmentation may not berequired as ‘N-1’ violation isvery meagre. Further, aftercommissioning of Vellaviduthi400/230 kV S/s, the N-1 violationat Alundur will be resolved.

2.

400/220 kV 2x315 MVA ICTs at Jindal S/S

High demand andpeak solar scenario SR

‘N-1’ not satisfied for80% in April, 5% in May, 4% in June

It was informed that KPTCL isdrawing additional power fromJindal S/S through 220 kV line. Committee advised KPTCL totake appropriate action tominimize the loading on the ICTsat Jindal S/s.

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5.2. Transmission Line Constraints

Transmission line constraints reported by SRLDC in Q4 of 2020-21 (Jan’21 – March’21):

Sl.No

Corridor

Season/ Antecedent Conditions

Description of the transmission line constraints


TamilNadu230 kVSystem

WholeYear

230 kV NLCTS 2 – KadalangudiS/C

TANTRANSCO informed thatthere would not be any constraintafter commissioning of 2nd circuitfrom Neyveli (TNEB) – Kadalagudi230 kV SC line.

230 kV NLCTS 2 - STCMS

TANTRANSCO informed thatthere is no constraint observed aftersplit bus arrangement at Cuddalore& Neyveli 230 kV SS and openingof NNTPS-Neyveli 230 kV DCline.

230 kV Kalivendapattu –Tharamani S/C

TANTRANSCO informed thatupgradation of Tharamani 400 kVSS, construction of Sholinganallur –KITs park 230 kV SC line andSholinganallur -Omega 230 kV DCline.

230 kV Anaikaduvu – Othakalmandapam D/C (During Wind season)

TANTRANSCO informed that high loading is only during high wind generation season

230 kV Othakalmandapam-Coimbatoor S/C


230 kV Othakalmandapam – Thudialur S/C


230 kV Othakalmandapam –Mywadi S/C

TANTRANSCO informed thathigh loading is only during highwind generation season and linestrengthening work is underprogress.

230 kV Madurai - Sembatty S/C

TANTRANSCO informed thatthere is no constraint aftercommissioning of Karaikudi-Sembatty 230 kV SC line.

230 kV Pugalur – Pugalur(PG) D/C

TANTRANSCO informed thatloading issues will be resolvedafter making LILO of Alundur-Pugalur (PG) 230 kV feeder atValayapatty 230 kV SS.

230 kV Pugalur-Karukathi S/C TANTRANSCO informed thatloading issues will be addressedafter making LILO of Alundur-Pugalur (PG) 230 kV feeder atValayapatty 230 kV SS and LILO

11


1016


Sl.No

Corridor




of Ingur –Palladam line atKurukathi.

230 kV Pudanchandai-Pugalur S/C

TANTRANSCO informed thatloading issues will be addressedafter making LILO of Alundur-Pugalur (PG) 230 kV feeder atValayapatty 230 kV SS.

230 kV Trichy (PG) – Allundur(TN) D/C

TANTRANSCO informed thatloading issues would be resolvedafter commissioning ofVellaviduthi 400 kV SS.

230 kV TTPS-TSIPCOT S/CTANTRANSCO informed thatloading issues would be resolvedafter commissioning of Ottapidaram400 kV SS

230 kV Kariakudi – Karmbayam

TANTRANSCO informed that aftercommissioning of Karaikudi –Karambiyam 230 kV 2nd circuitwhich is under construction, theloading issue will be resolved.

2 220 kVBangalore MetroNetwork

WholeYear

Most of the 220 kV network inBengaluru is radialised duringpeak season to prevent overloading of lines. The radialisationof lines decreases the reliabilityof supply & thus resulting in LowVoltage situation during peakperiod and High Voltage duringOff-Peak period of the day at 400kV Somanahalli/Nelamangala/Hoody.There is no sufficient CapacitorCompensation at distributionlevel in BESCOM area also.

KPTCL informed that the followingsubstations are being established toprevent the overloading of 220 kVlines in Bengaluru:a. 2 x 500 MVA,

400/220 kV Dommasandra GIS- Target by March, 2024,

b. 2x150 MVA,220/66 kV Kumbalagodu S/s -Target by November, 2021.

c. 2x150 MVA,220/66 kV Exora S/s- Target byNovember, 2021.

d. 2x150 MVA,220/66 kV HBR Layout S/s -Target by January, 2022.

e. 2x150 MVA,220/66 kV Sahakari Nagar S/s -Target by December, 2022.

f. 2 x 150 MVA,220/66 kV GIS sub-station atSobha Dreams - Target bySeptember 2021

g. 2 x 150 MVA,220/66 kV GIS sub-station atWhitefiled (Hagadur) - Targetby March 2024

h. 2x150 MVA,220/66 kV Nagarbhavi S/s -

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Sl.No

Corridor




Target by March 2024i. 2x100 MVA,

220/66 kV Nelamangala S/s -Target by March 2024

j. 2 x 150 MVA,220/66 kV GIS in the premises ofexisting 66/11kV Keonics(Electronic City) S/s - Target byMarch 2024

k. 2 x 150 MVA,220/66 kV GIS near 66/11kVMathikere S/s - Target by January2024

l. 2x150 MVA, 220/66kV and 1x31.5 MVA, 66/11 kVsubstation at Banashankari 6thstage - Target by March 2024

m. 2x150MVA,220/66kV and 31.5MVA,66/11kV substation at Medahalli -Target by March 2024

n. 220 kV GIS near toexisting 220 kV VrishabhavathiValley S/s along withstrenghthening of 220kVSomanahalli-Tataguni-VV ValleySC line. - Target by March 2023

o. 220 kV GIS atBBMP park near to existing220/66/11 kV Khodays GlassFactory S/s - Target by March2023

p. 220 kV Multi circuit(4 circuits) line from 400/220KVNelamangala-220 kV SRSPeenya- 220 kV NRSRajajinagara-220 kV BrindavanaS/s - proposed 220 kVSahakarinagra S/s - Target byOctober 2022

q. Strengthening ofexisting 220 kV Kolar HVDC-Kolar DC line using HTLSconductor - Target by March2024

r. Strengthening ofexisting 220 kV Bidadi PGCIL-Bidadi DC line using HTLSconductor - Target by March2024

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1018


Sl.No

Corridor




s. 220 kV 1200sqmmUG Cable from 400 kV Hoody toEDC S/s for a length of 13.5 km -Target by March 2024

t. 220 kV 1200sqmmUG Cable from 220 kVKoramangala to EDC S/s for alength of 4.5 km - Target byMarch 2024

3

Constraints inNagjheriPHevacuation

WholeYear

The 220 kV Nagjheri –Ambewadi DC, 220 kVAmbewadi – Narendra DC, 220kV Kodasalli – Nagjheri D/C, 220kV Kaiga – Kodasally SC & 220kV Kadra – Kodasally SC linesare severely overloaded. In 1st

meeting of Southern RegionalPower Committee (TransmissionPlanning) held on 16.12.2019recommended for Re-conductoring of the lines withHTLS conductor. KPTCL has toexpedite the same.

KPTCL informed that estimate isunder preparation for thereconductoring work with HTLSconductor and the work is expectedto be completed by March, 2024.

4

AndhraPradesh220kVNetwork

WholeYear

The following lines are heavily loaded: 220 kV Lower Sileru –

Bommuru S/CAPTRANSCO informed thatloading will be reduced with thecompletion of works for revival of220 kV Lower Sileru – BommuruDC abandoned line, which areunder progress. The work isexpected to be completed by

220 kV UpperSileru-Pendurthi S/C

220 kV LowerSileru-KTSV S/C

220 kV Maradam-Garividi D/CAPTRANSCO informed that 220kV Maradam – Pydibhimavaramline was commissioned on14.05.2021 and 220/132 kV 100MVA PTR at Pydibhimavaram wasloaded on 02-08-2021. Hence,loadings on 220 kV Maradam –Garividi and Maradam – Bobbilifeeders were reduced.

220 kV Maradam-Bobbili D/C

14


1019


Sl.No

Corridor




220 kV Kalpaka-Brandix D/C

APTRANSCO informed that theland acquisition for construction of400/220 kV Atchutapuram SS is infinal stage. With theimplementation of the proposed400 kV Atchutapuram S/s, loadingon 220 kV Kalpaka – Brandix willbe reduced. 400 kV AtchutapuramS/s would be commissioned by2024-25. However, an interim alternateproposal to reduce overloading on220 kV Kalpaka – Brandix is understudy. The interim arrangement is

220 kV Gazuwaka-Parvada

APTRANSCO informed that 220KV Gajuwaka (VSS) – Kakinadawas proposed to be LILO’ed at 220KV SS Parawada. Tendering is inprogress. The work is expected tobe completed by May’2022.

220 kV Vemagiri-Bommuru D/C

APTRANSCO informed that LILOof 220 kV Bommuru – VijjeswaramStage-1 & 220 kV Bommuru –Vijjeswaram Stage-2 lines at440/220 kV Vemagiri S/s is alreadyplanned. Tendering is in progress.The work is expected to be

220 kV Gudivada-Nunna D/C

APTRANSCO informed that withthe implementation of proposed400/220 kV Gudiwada S/S, loadingon 220 kV Gudivada-Nunna D/Cline will be reduced. Proposal wasfurnished to CEA on 13.07.2021.Works will be awarded after gettingapproval from CEA. It is expectedto be completed in 2023-24.

220 kV Gunadala-Nunna S/CLine

APTRANSCO informed that bridgejumpers were connected between220 kV VTS and 220 kV Gunadalafeeders at 220 kV Nunna S/s toform 2nd 220 kV VTS – GunadalaLine on 22.01.2021. Another 220kV Nunna-Gunadala DC line is alsounder construction. 220 kV VTPS-Tadikonda D/C APTRANSCO informed that loadsof 132 kV SS Guntur were shiftedfrom 220 kV S/S Tadikonda SS to220 kV Prathipadu S/s on30.04.2021. With this, loading on220 kV VTPS - Tadikonda Lineswas reduced.

15


1020


Sl.No

Corridor




220 kV Chinakampalli-Rajampet S/C

APTRANSCO informed that 220kV Chinakampalli – Rajampet lineis passing through forest area due towhich replacement with HTLSconductor is difficult. New 220 kVSS in the same area is under study.Expected time frame for new 220kV S/s is 2024-25.

5

Downstream network of Mysore400/220 kV SS

Peakdemandscenario

of SR

The following lines are heavily loaded: 220 kV Mysore-Hootagalli D/

C 220 kV Mysore-Kadakola D/C 220 kV Mysore-Tubinekare S/

C 220 kV Hootagalli-

Vajamangala S/C 220 kV Kadakola-Begur D/C 220 kV Hootagalli-Kadakola

S/C

KPTCL informed that strengtheningof 220 kV Mysore-Hootagalli D/Cby replacing existing Drake byHTLS conductor is expected to becompleted by March 2024.Conversion of 220 kV Hootagalli-Vajamangala SC line by DC line isapproved and it will beimplemented by March, 2024.

KPTCL added that with theproposed 400 kV Kadakola S/s, theloading of following 220kV lineswould be reduced:

220 kV Mysore-Kadakola 220 kV Kadakola-Begur 220 kV Hootagalli-Kadakola

400 kV Kadakola S/s is expected tobe implemented by March 2024.

In addition to the above, following transmission line constraints reported in Q1 of FY-2021-22 (April, 21-June, 21) were also discussed:

Sl.No

Corridor


Description of the transmissionline constraints


1

Downstream networkof UPCL 400/220 kV SS

DuringUPCLfullgeneration andpeakdemandscenarioofKarnataka

220 kV UPCL-Kemar D/c

KPTCL informed that 2x500 MVA,400/220 kV Arasapadavu S/s is plannedto reduce the loading on 220 kV UPCL-Kemar D/c line. Arasapadavu S/s isexpected to be implemented by March,2024.

16


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5.3. Over Voltage Constraints

5.3.1 Director, CEA, informed that SRLDC in its report for the period Q4 of 2020-21 (Jan’21 –March’21) has mentioned that 57 nos. of nodes are experiencing high voltage, out of which24 nodes are experiencing high voltage almost throughout the year. To control the overvoltage, 114 nos. of 765 kV and 400 kV lines had to be opened 549 times.

Further, SRLDC in its report for the period Q1 of 2021-22 (April’21 – June’21) hasreported that about 74 nodes are experiencing high voltage (above 420 kV) during off peakperiod / whole year. To control the overvoltage, about 98 nos. of 765kV and 400 kVelements had to be opened 282 times.

5.3.2 To mitigate the over/ low voltage issues, reactive compensation studies have been carriedregularly with augmentation of new transmission system or operator feedback and put upfor deliberation in the SRPC(TP) meetings. On basis of study analysis, 27 nos. of reactorsat different ISTS and STU nodes were agreed for implementation in Southern RegionalGrid in 1st SRSCT meeting held on 07.09.2018.

Matter regarding persisting high voltage in Southern Region was also discussed in 2nd

SRPC(TP) meeting held on 01.10.2020, wherein STUs were asked to expedite theimplementation of reactors agreed in various standing committees. Details of the reactors andtheir implementation status as informed during the 2nd SRPC(TP) meeting are as tabulatedbelow.

Sl.No.

Bus NameVoltage

(kV)ISTS /State

Existing /UC

Reactor(MVAr)

TypeReactorAgreed(MVAr)

Status as per 3rd SRPC(TP)meeting

1. Hosur 400 ISTS 63 Bus 125Expected to be commissionedby September, 2021.

2. Madhugiri 400 ISTS 63 Bus 125Major works completed,Expected to be commissionedby September, 2021.

3. Dharampuri 400 ISTS - Bus 125Expected to be commissionedby September, 2021.

4. Hiriyur 400 ISTS - Bus 125Major civil works completed,Expected to be commissionedby October, 2021.

5. Pugalur 400 ISTS - Bus 125Major civil work completed,expected to be commissionedby October, 2021

6.Pugalur HVDC STN

400 ISTS - Bus 2x125Major civil work completed,expected to be commissionedby October, 2021

7. Rachagunneri 400 AP - Bus 125Commissioned in November,2020

8. Hindupur 400 AP 80 Bus 125

80MVAr was commissionedon 21.11.2020.Works are yet to be awardedfor the 125 MVAr Bus

17


1022


Sl.No.

Bus NameVoltage

(kV)ISTS /State

Existing /UC

Reactor(MVAr)



Reactor.9. Yeramarus 400 KAR - Bus 125 Tendering under progress10. Bellary PS 400 KAR - Bus 2x125 Reactor Charged

11. CN Halli 400 KAR - Bus 2x125Land has been acquired.Reactor work would be takenup along with the station.

12. Jagalur 400 KAR - Bus 2x125

2x80 MVAr reactors havebeen commissioned instead of2x125 MVAr.

13. Wayanad 400 KER - Bus 125

Reactor would beimplemented along withWayand Sub-station. Thesame is yet to be ordered.

14. Velalividu 400 TN - Bus 125

1x80 MVAr bus reactor isunder erection stage and it isexpected to be commissionedby December 2021. Thesuggested 1x125 MVArreactor is not required.

15. Uddandapur 400 TEL Bus 125 Tendering is under progress

16. KTPP SS 400 TEL Bus 125

Works are taken up along withconstruction of 400/220/132kV KTPP SS. At present,foundation & structureerection works are underprogress. It is expected to becommissioned in March, 2022.

17. Raidurg 400 TEL Bus 125

Works are taken up against theongoing contract of RayadurgGIS sub-station and works arenearing completion. It isexpected to be commissionedin November, 2021.

18. Narlapur 400 TEL Bus 125 Contract has been awarded forthe erection pf 400 kV LI SSat Narlapur, Vattem, andYedula along with supply &erection of 1x125 MVArreactor at each substation.Narlapur work is likely to becompleted in May’2022 andYedula & Vattem works islikely to be completed inMarch, 2022.

19. Yedula 400 TEL Bus 125

20. Vattem 400 TEL Bus 125

21. Narsapur 400 TEL Bus 125 Grant from PSDF wassanctioned by MoP on31.03.2021. Works will betaken up shortly. The work is

22. Kethireddypalli 400 TEL Bus 125

18


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Sl.No.

Bus NameVoltage

(kV)ISTS /State

Existing /UC

Reactor(MVAr)



expected to be completed by

23. Kamalapuram 400 TEL Bus 125

Works are taken up against theongoing contract ofKamalapuram LI sub-stationand works are nearingcompletion. The work isexpected to be completed bySeptember, 2021.

24. Tippapur 400 TEL Bus 125 Reactor commissioning worksare under progress. The workis expected to be completed byOctober, 2021.

25.Sundilla (Yellampalli)

400 TEL Bus 125

26. Chandulapur 400 TEL Bus 125Works are completed and itwas commissioned on06.09.2019.

27. Chouttuppal 400 TEL Bus 125

Works are taken up along withconstruction of 400/220/132kV Choutuppal SS. At present,tower erection works are underprogress. The work is expectedto be completed by February,2022.

28. Dindi 400 TEL Bus 2x125 PSDF grant was sanctioned byMoP on 31.03.2021. Contractwas awarded by Bay extensionworks on dtd. 04.06.2021. Atpresent, works are underprogress. The work is expectedto be completed by June, 2022.

29. Janagaon 400 TEL Bus 12530. Suryapet 400 TEL Bus 125

31.Maheshwaram-TS

400 TEL Bus 80

32.Asupaka

400 TEL Bus 12533. 400 TEL Line 63

5.3.3 Subsequently, to analyze the high / low voltage issue in Southern Grid, in time frame of2024-25 (August-night), detailed study has been carried out by CTU. Maximum andminimum demand observed by SRLDC for 2020-21 and the demand considered for studyanalysis in time frame of 2024-25 and are as given below.

Sl.No.

STU Observed Demand in2020-21 (MW)

Peak Demand for2024-25 (MW)

(as per 19th EPS)

Demand considered for 2024-25(MW)

Max. Min. Max. Min.

1. AndhraPradesh

11193 5786 14600 12800 6800

2. Telangana 13688 5678 16900 16000 87003. Karnataka 14367 4433 16700 16300 69004. Kerala 4284 1969 6000 5800 28005. Tamil 16481 10595 24200 22800 12100

19


1024


Nadu6. Puducherr

y421 - 650 570 314

7. SouthernRegion

58400 27486 74650 74200 37700

5.3.4 From study results, voltage above than 1.05 pu has been observed at Muddunur, Karaikudiand Velalividu S/s. Further, 1x125 MVAR, 420 kV bus reactor proposed by APTRANSCOat Kalikiri 400/220 kV S/s along with 6100 MW solar generation scheme, has beenconsidered in study analysis.

5.3.5 It may be noted that due to space constraint, it is not possible to implement 420 kV busreactor at Karakudi 400/230 kV S/s. To control the grid voltage following is proposed forMuddunur and Velalividu S/s.

Installation of 1x125 MVAR, 420 kV bus reactor is proposed at Muddunur generationend– Under the scope of Generator. (Presently there is no bus reactor at generatorswitchyard).

Installation of 1x125 MVAR, 420kV bus reactor is proposed at Velalivedu S/s – Underthe scope of TANTRANSCO.

5.3.6 From study analysis it may be observed that voltage at all 765 kV substations is within theoperational limit for 765 kV level i.e. 800 kV.

Further, it may be noted that in study analysis, generators in Southern Region haveabsorbed reactive power of the order of about 7700 MVAR. If generators are not operatedin under excited conditions, more reactors shall be required at different nodes to control thegrid voltage.


5.3.7 Sr. DGM (CTUIL) stated that considering all the planned and approved Bus/Line reactors,the total reactive compensation provided at 400 kV and 765 kV is 61% and 84%respectively. If generators will absorb reactive power as per their capability curve thenadditional reactors may not be required to control Bus voltages. However, with the injectionof more RE power in the grid, some generating units may have to back down and capabilityof the grid to absorb reactive power will reduce. In such case, additional reactors may haveto be planned based on the feedback of POSOCO.

5.3.8 POSOCO mentioned that as per CEA’s Manual on Transmission Planning Criteria, reactivepower capability from generating units is to be considered as (-)10% Pmax for thermalgenerators. However, in present study analysis, reactive support from the generators isconsidered as more than 10%.

5.3.9 CTU clarified that detailed study analysis has been carried out in line with discussion held on1st SRSCT meeting, held on 07.09.2018, wherein 27 nos. of 125 MVAR, 420 kV bus

20


1025


reactors were agreed after detailed deliberation. He reiterated that generally thermalgenerators have about reactive support capability of about (-)30-35% of Pmax. Therefore,planning bus reactors considering only (-)10% Pmax as reactive support capability of thegenerators will create huge margin into the system and it will be along with cost implicationto beneficiaries.

5.3.10 SRLDC informed that generators are absorbing reactive power from the grid as per theircapability on the directions of SRLDC. SRLDC also presented the P-Q capability curvealong with reactive power absorbed by 500 MW generating unit at RamagundamGenerating station. As per curve, 500 MW generating units is absorbing about 150 MVARat rated capacity.

5.3.11 Director, POSOCO, suggested to include the number of 400 kV & 765 kV transmissionlines to be opened on voltage regulation and the dispatch of generating unit during high/lowRE period in the reactive power compensation studies.

5.3.12 Sr. DGM (CTUIL) informed that, considering all the above reactors in operation, they arenot envisaging opening of any ISTS line for voltage regulation provided that theconventional generators absorbing the reactive power as per their capability curve.Regarding reactive power absorption capability of generating units, he opined that thereactive power absorption capability of generating units should not be restricted to 10% ofPmax. It should be adjusted depending on the margin available as per their capability curve,otherwise additional reactors may have to be planned. He also explained that generatorswith dispatch above the technical minimum were considered in service and all othergenerators are considered as out of service.

5.3.13 After deliberations, it was decided that the proposal of implementation of following BusReactors would be discussed in a joint study meeting to be conveyed for discussing reactivepower compensation issues of Southern Region:

Installation of 1x125 MVAR, 420 kV bus reactor proposed at Muddunur generation end.Presently there is no bus reactor at generator switchyard – Under the scope of Generator

Installation of 1x125 MVAR, 420kV bus reactor proposed at Velalivedu S/s – Under thescope of TANTRANSCO

The same would be discussed in the next SRPC(TP) meeting.

5.4. Requirement of ‘N-1’ Reliability for ICTs at RE Pooling Grid stations:

5.4.1. Director, CEA, stated that as per the Manual on Transmission Planning Criteria,“para 16.2 The ‘N-1’ criteria may not be applied to the immediate connectivity ofwind/solar farms with the ISTS/Intra-STS grid i.e. the line connecting the farm to the gridand the step-up transformers at the grid station”.

5.4.2. CTUIL stated that there is need to have ‘N-1’ security for step-up transformers atthe grid sub-stations, else loss of one ICT may lead to loss of total RE pooled at the

21


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station. SRLDC in its quarterly report Q1 for the time period April’21-June’21 reportedsuch incident at Tuticorin-II GIS S/s and same is reproduced below.

“Presently 888 MW wind generation is getting evacuated at 400/230 kV TuticorinGIS through 2x500MVA 400/230 kV ICT#1 and ICT#2 from 4 numbers of WindStations namely 230/33 kV Betam, 230/33kV Mytrah, 230/33kV Orange and230/33/11kV Green Infra (Chandragiri). On 14-07-2021, 400/230kV ICT#1 at TTGSgot tripped due to suspected maloperation of Buchholz protection. After the trippingof ICT#1, entire power (735 MW generation prior to incident) got shifted to ICT#2and over current stage-1 protection operated as the current increased to max RMScurrent of 2300 A. Due to tripping of both ICTs, there was loss of wind evacuation of735MW. Similarly, N-1 condition is not satisfied at all the RE generation poolingstations”

5.4.3. Presently in Southern Region, large RE generation projects are under operation viz.Tumkur Solar Park (2050 MW commissioned), N P Kunta (1500 MW out of which 1300MW is commissioned), Tuticorin-II GIS (LTA granted for about 1100 MW + 540 MWagreed for grant) etc. In case of outage of large capacity RE generation, the possibility ofgrid eventuality may not be ruled out. In view of safety, security and reliability of grid, atleast from ‘N-1’ security point of view, for step-up transformers at ISTS pooling stationfor RE generators, it is proposed that ‘N-1’ contingency criteria may be considered forstep-up transformers at the grid stations (ISTS) and implementation of ICTs may be takenup accordingly.


5.4.4. Director, POSOCO, opined that installation of additional ICT should be consideredat ISTS RE generation pooling stations so that ‘N-1’ criterion is compiled and cascadetripping of ICTs could be avoided in case of any contingency. He added that loosing largequantum of RE power due to cascade tripping of transformers will affect the grid stability.

5.4.5. KPTCL opined that considering reliability of grid, N-1 reliability criterion forICT’s at RE pooling station shall be applied for RE generators connected at 220 kV andabove voltage class.

5.4.6. Representative from TANGEDCO opined that ‘N-1’ compliance for step uptransformers at RE pooling stations alone cannot prevent the loss of large quantum of REpower. ‘N-1’ compliance of the line connecting RE generation to the grid is also required.However, complying ‘N-1’ of transformers and line will add tariff burden to thebeneficiaries.

5.4.7. Member (Power System), CEA, stated that cascade tripping of ICTs at RE poolingstation would affect all the downstream network. However, during outage of thetransmission line connecting RE generation to the grid, the demand would be met throughother generating sources. Regarding tariff burden, he stated that as per new CERC tariffregulation, the tariff burden will be shared by all the states. As per the Manual on

22


1027


Transmission Planning Criteria 2013, “para 16.2 The ‘N-1’ criteria may not be applied tothe immediate connectivity of wind/solar farms with the ISTS/Intra-STS grid i.e. the lineconnecting the farm to the grid and the step up transformers at the grid station”. Themanual is under revision and the issue is being deliberated by the committee constitutedfor revision of the Manual. Once the Manual is revised, the same would be adopted fortransmission planning.

B. ToR 2(ii) – ASSESSMENT OF TRANSMISSION SYSTEM REQUIREMENTS IN NEAR,MEDIUM AND LONG TERM AND FORMULATE TRANSMISSION SCHEME

6. Proposal for grant of connectivity to NLC India Ltd for TPS-II 2nd Expansion (2x660

MW) in Cuddalore, Tamil Nadu, and to control high short circuit fault level in Neyveli

Generation complex.

6.1. Proposal for grant of connectivity to M/s NLC India Ltd for Neyveli TPS-II 2nd Expansion

thermal power plant was discussed and agreed in the 2nd SRSCT meeting held on 10.06.2019

and subsequently in the 1st meeting of Southern Regional Power Committee (Transmission

Planning) held on 16.12.2019. In view of the connectivity requirements of Neyveli TPS-II 2nd

expansion from April, 2021, and commissioning of Manalmedu (TANTRANSCO) substation

by December, 2021, it was agreed in 1st SRPC(TP) meeting that LILO of 2nd circuit of

Neyveli TS-II / Neyveli TS-I Expn – Trichy 400 kV D/c line at Nagapattinam, shall be

restored only after commissioning of Manalmedu S/s, Neyveli TPSII 2nd Expn – Manalmedu

400 kV D/c (Quad) line and Manalmedu – Ariyalur 400 kV D/c line by TANTRANSCO.

6.2. Accordingly, following was agreed in the 2nd SRSCT/1st SRPC(TP) meeting(s):

Transmission System for providing connectivity to Neyveli TS-II 2nd Expn (2x660 MW):

i. Re-storation of Neyveli TS-II/Neyveli TS-I Expn - Trichy 400 kV D/c lines throughsuitable arrangement of bypassing the LILOs at Nagapattinam– to be implementedunder ISTS.

ii. Utilization of LILO sections for making Neyveli TPS-II 2nd Expn – Nagapattinam 400kV, 2xD/c lines upto Neyveli TPS-II 2nd Expn swithchyard - to be implemented underISTS.

iii. LILO of 2nd circuit of Neyveli TS-II / Neyveli TS-I Expn – Trichy 400 kV D/c line atNagapattinam shall be restored only after commissioning of Manalmedu S/s, NeyveliTPSII 2nd Expn – Manalmedu 400 kV D/c (Quad) line and Manalmedu – Ariyalur 400kV D/c line by TANTRANSCO.

iv. 2x125 MVAr bus reactors at generation switchyard (Neyveli TPS-II 2nd Expn) – byNLC India Ltd.

v. The line bays at generation switchyard would be implemented by NLC India Ltd. vi. Generation Switchyard to be designed with 50 kA short circuit level.

Additional System Strengthening for control of short circuit levels in Neyveligeneration complex and re-arrangement of network configuration to controloverloading of ICTs / 230 kV lines from Neyveli generation complex:

23


1028


i. Neyveli TS-II – Cuddalore 400 kV D/c (Quad) line – under the scope of TANGEDCOas agreed in 1st SRSCT.

ii. Manalmedu – Neyveli TPS-II 2nd Expn 400 kV D/c (Quad) line (in place of Cuddalore– Manalmedu 400 kV D/c line agreed in 1st SRSCT) – under the scope ofTANGEDCO.

iii. Bypassing of one ckt. of Neyveli TS-II- Salem 400 kV D/c line of PGCIL and NeyveliTSII- NNTPS 400 kV S/c line of PGCIL, to form NNTPS-Salem 400 kV S/c line(agreed in 42nd SCPSPSR) – to be implemented under ISTS.

6.3. Subsequently, CTU vide email dated 12.03.2020 sought confirmation of start date of

connectivity and expected commissioning schedule of both the units of Neyveli TPS-II 2nd

Expansion. In reply to the email, M/s NLC India Ltd. has furnished the following information

towards start date of connectivity and expected commissioning schedule:

Date from which connectivity is required : Year 2024-25 (Tentative) Date of commissioning of Unit 1 : Year 2025-26 (Tentative) Date of commissioning of Unit 2 : Year 2025-26 (Tentative)

6.4. M/s NLC India Ltd. has revised the start date of connectivity from April, 2021, to the year

2024-25 (tentative). In view of the delayed schedule of commissioning of Neyveli TPS-II 2nd

Expansion, implementation of the associated transmission scheme may be required to be

phased by Tamil Nadu. Further, as per the revised schedule of commissioning of the

generating units, Manalmedu S/S shall be connected radially to Ariyalur till the

implementation of Manalmedu – Neyveli TPS-II 2nd Expn 400 kV D/c (Quad) line, which

shall be implemented matching with schedule of commissioning of generating units of

Neyveli TPS-II 2nd Expansion. Further LILO of 2nd circuit of Neyveli TS-II / Neyveli TS-I

Expn – Trichy 400 kV D/c line at Nagapattinam, shall be restored only after commissioning

of Manalmedu S/s, Neyveli TPS II 2nd Expn – Manalmedu 400 kV D/c (Quad) line and

Manalmedu - Ariyalur 400 kV D/c line by TANTRANSCO as agreed in the 1 st SRPC(TP)

meeting.

6.5. For transmission system augmentation and re-arrangement of network configuration, as

mentioned in para 6.2, firm commissioning schedule of Neyveli TS-II 2nd Expn (2x660 MW)

is required. As such, the augmentation/re-arrangement work would be taken up upon receipt

of firm commissioning schedule of Neyveli TS-II 2nd Expn (2x660 MW) from NLC India

Ltd.

6.6. In the 2nd SRPC (TP) meeting, representative of NLC informed that start date of connectivity

for Neyveli TPS-II 2nd Expn may be considered as 2025-26 (tentative). TANTRANSCO

representative informed that works for Manalmedu S/s is likely to start by January/February,

2021, and the substation is expected to be commissioned by 2022-23.

24


1029


6.7. In the view of mismatching timeframe of Neyveli TPS-II 2nd Expn and Manalmedu S/s and

change in connectivity of Manalmedu S/s proposed by TANTRANSCO, it had been decided

in the 2nd SRPC(TP) meeting that CEA, CTU, SRPC, NLC, TANTRANSCO and

SRLDC/POSOCO may jointly study the proposal and also work out phasing of the

transmission scheme. Thereafter, the same would be discussed in the next meeting of

SRPC(TP).

Fig: Proposed connectivity for Neyveli TPS-II 2nd Expn (2x660 MW)

6.8. Accordingly, the matter was discussed in the joint study meeting held on 04.02.2021 and

after detailed deliberation following transmission system was proposed:

i. Rearrangement of 400 kV NNTPS – Neyveli TS II & 400 kV Neyveli TS II – Salem

line as 400 kV NNTPS – Salem S/C line to be taken up on urgent basis.

TANTRANSCO may utilize the bays at Neyveli TS II for interconnecting with

Cuddalore S/S through Neyveli TS-II – Cuddalore 400 kV D/c (Quad) line. The

Neyveli TS-II – Cuddalore 400 kV D/c (Quad) line – under the scope of TANGEDCO

had been agreed in 1st SRSCT meeting.

ii. Re-storation of Neyveli TS-II/Neyveli TS-I Expn - Trichy 400 kV D/c lines through

suitable arrangement of bypassing the LILOs at Nagapattinam (to be implemented as

ISTS) would be carried out only after receipt of firm commissioning schedule of

Neyveli TPS II 2nd Expansion so as to match with the commissioning schedule of

Neyveli TPS-II 2nd Expansion.

iii. Manalmedu – Neyveli TPS-II 2nd Expn 400 kV D/c (Quad) line (under the scope of

TANGEDCO) would be taken up so as to match with the commissioning schedule of

Neyveli TPS-II 2nd Expansion.

iv. Manalmedu S/s would be connected to LILO of 400 kV NNTPS – Salem S/C line as an

interim arrangement. Detailed connectivity of Manalmedu S/s is discussed in agenda

point no. 7.

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1030


6.9. In the joint study meeting, it was agreed that the transmission system and its phasing would

be put up in the forthcoming meeting of SRPC(TP). Subsequently, revised connectivity for

Manalmedu has been proposed by TANTRANSCO. Hence, part of the scheme proposed

above would change depending upon the connectivity agreed for Manalmedu.

Deliberations in 3 rd SRPC(TP) meeting

6.10. TANTRANCO informed that NLCIL vide letter dated 09.12.2020 addressed to

CMD/TANGEDCO has stated that CoD of Neyveli TPS-II 2nd Expansion (2x660 MW) is

expected to be in the year 2026-27.

6.11. NLCIL informed that there are uncertainties in PPAs, except PPA (547 MW) with Tamil

Nadu and investment decision for this project is yet to be taken.

6.12. TANTRANSCO informed that in view of the delayed schedule of commissioning of Neyveli

TPS-II 2nd Expansion, implementation of the associated transmission scheme may be required

to be phased by Tamil Nadu.

6.13. After deliberations, it was agreed that the proposal for grant of connectivity to NLC India Ltdfor TPS-II 2nd Expansion (2x660 MW) will be discussed when commissioning schedule ofNeyveli TPS-II 2nd Expansion (2x660 MW) gets finalized. The connectivity application ofNLC India Ltd for Neyveli TPS-II 2nd Expansion (2x660 MW) would be closed and NLCILmay apply for connectivity after availability of firm commissioning schedule of thegeneration project.

7. Manalmedu 400/230-110 kV substation:

7.1. Establishment of Manalmedu 400/230-110 kV substation was approved in the 41st meeting of

SCPSPSR (held on 22.09.2017) with the following transmission schemes:

400 kV transmission lines:

i. Ariyalur (proposed 765/400kV SS) - Manalmedu 400 kV D/C link ii. Neyveli (TNEB)-Manalmedu 400 kV D/C link.


i. LILO of Neyveli TS-II - Kadalangudi 230 kV SC line at Manalmedu.ii. Kumbakonam- Manalmedu 230 kV S/C line

iii. Narimanam- Manalmedu 230 kV S/C line.ICTs:

i. 2x500 MVA, 400/230 kV ICT ii. 2x200 MVA, 400/110 kV ICT

Bus reactor: 2x80 MVAr Bus reactors.

7.2. Due to constraints in land acquisition for the establishment of 400 kV S/S at Neyveli,

upgradation of the existing Cuddalore 230/110 kV substation into 400/230-110 kV SS instead

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of the already approved Neyveli 400/230 kV substation had been approved in the 1st SRSCT

meeting held on 07.09.2018 with the following connectivity:

(i) Neyveli TS II - Cuddalore 400 kV D/C line.(ii) Manalmedu - Cuddalore 400 kV D/C line.(iii) 2x500 MVA, 400/230 kV ICTs(iv) 2x200 MVA, 400/110 kV ICTs(v) 2x125 MVAr, 400 kV bus Reactors

Thus the 400 kV connectivity for Manalmedu SS was modified as given below:

(i) Ariyalur 765/400 kV SS - Manalmedu 400 kV DC line.(ii) Cuddalore - Manalmedu 400 kV D/C line.

7.3. Further, in the 2nd SRSCT meeting held on 10.06.2019, as an additional system strengthening

scheme for control of short circuit levels in Neyveli generation complex and rearrangement

of network configuration to control overloading of ICTs/230 kV lines from Neyveli

generation complex, transmission schemes of the already proposed Manalmedu & Cuddalore

400 kV substations were modified as follows:

(i) Neyveli TS II - Cuddalore 400 kV D/c (Quad) line - under the scope of TANGEDCOas agreed in 1st SRSCT meeting.

(ii) Manalmedu - Neyveli TPS II 2nd Expansion 400 kV D/c (Quad) line (in place of Cuddalore – Manalmedu 400kV D/c line as agreed in 1st SRSCT) – under the scope of TANGEDCO

7.4. In the 2nd SRPC(TP) meeting, TANTRANSCO had proposed to revise the transmission

scheme for the establishment of 400/230-110 kV Manalmedu substation as given below:

Manalmedu 400/230-110 kV SS – original connectivity:


i. Erection of 400 kV DC line from Ariyalur 765/400 kV SS to Manalmedu 400 kV SS.

ii. Erection of 400 kV DC line from the proposed Neyveli TS II 2nd Expansion TPP to

Manalmedu 400 kV SS.

ICT

i. 2x500 MVA, 400/230 kV ICTs

ii. 3x200 MVA, 400/110 kV ICTs

Bus reactor

2x125 MVAr Bus Reactors

230 kV transmission lines :

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i. Erection of DC line to make LILO of Neyveli TS-II to Kadalangudi 230 kV feeder atManalmedu 400 kV SS.

ii. Erection of SC line to Kumbakonam 230 kV SS from Manalmedu 400 kV SSiii. Erection of SC line to Poyyur 230 kV SS from Manalmedu 400 kV SS.iv. Erection of DC line to the proposed Chidambaram 230 kV SS from Manalmedu 400

kV SS.v. Erection of DC line to the proposed Virudhachalam 230 kV SS from Manalmedu 400

kV SS.110 kV transmission lines

i. LILO of existing Kadalangudy-LTPCL-Manalmedu 110 kV feeder between LTPCLand Manalmedu substation.

ii. SC line to Kattumannar Koil 110 kV SS.iii. SC line to Sethiyathoppu 110 kV SS.iv. DC line to Pappakudi 110 kV SS.v. SC line to the sanctioned Naduvalur 110 kV SS.

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7.5. In the view of mismatching timeframe of Neyveli TPS-II 2nd Expn TPP and Manalmedu S/s

and, instead of Manalmedu – Ariyalur 400 kV D/c line, LILO of NNTPS – Neyveli TS-II 400

kV S/c line at Manalmedu was proposed by TANTRANSCO, it had been decided in the 2nd

SRPC(TP) meeting that CEA, CTU, SRPC, NLC, TANTRANSCO and SRLDC/POSOCO

may jointly study the proposal and also work out phasing of the transmission scheme.

7.6. Accordingly, the matter was discussed in the Joint Study meeting on 04.02.2021. The

following 400 kV connectivity was proposed by TANTRANSCO for Manalmedu SS:

(i) LILO of NNTPS-Neyveli TS-II 400 kV S/c line at Manalmedu

7.7. In the meeting, after deliberations the following 400 kV connectivity was proposed for

Manalmedu

(i) LILO of NNTPS-Salem 400kV S/C line at Manalmedu (as an interim arrangement)

(ii) Erection of 400 kV D/C line from Ariyalur 765/400 kV SS to Manalmedu 400 kV SS.

(iii) The ICT’s, bus reactors, 230 kV and 110 kV connectivity would be as mentioned in

para 7.4.

7.8. Once the commissioning schedule of Neyveli TPS II 2nd Expn. TPP is firmed up, the 400 kV

connectivity to Manlamedu would be as agreed in 2nd SRPC (TP) meeting viz.

(i) Erection of 400 kV D/C line from the proposed Neyveli TS II 2nd Expansion TPP to

Manalmedu 400 kV SS.

(ii) Erection of 400 kV D/C line from Ariyalur 765/400 kV SS to Manalmedu 400 kV SS.

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7.9. TANTRANSCO representative stated that they would carry out studies with the proposed

400 kV connectivity as per para 7.7 and submit the results to CEA. It was decided that the

same would be discussed in the forthcoming meeting of SRPC(TP).

7.10. Director (PSPA-I), CEA, informed that TANTRANSCO has informed that by making LILO

of NNTPS-Salem 400kV S/C line at Manalmedu, the line length between Manalmedu and

NNTPS will be 250 km and TSTRANSCO has proposed following connectivity for

Manalmedu:

7.11. Without Neyveli TPS II 2 nd Expn:

i) 400 kV S/C quad moose line from Neyveli TS-II to Manalmedu 400 kV S/S.

ii) 400 kV S/C quad moose line from Neyveli TS-II to Cuddalore 400 kV S/S.

iii) 400 kV S/C quad moose line from Manalmedu 400kV S/S to Cuddalore 400 kV

S/S.

With Neyveli TPS II 2 nd Expn:

In addition to the 400 kV connectivity mentioned above, the following 400 kV

connectivity:

iv) Neyveli TPS II 2nd Expn - Manalmedu 400 kV D/C (quad moose) line

ICT &Reactori. 2x500 MVA 400/230 kV ICTs

ii. 3x200 MVA 400/110 kV ICTsiii. 2x125 MVAr Bus Reactors

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230 kV transmission lines:i. Erection of D/C line to make LILO of Neyveli TS-II to Kadalangudi 230 kV feeder at

Manalmedu 400 kV SS.ii. Erection of S/C line to Kumbakonam 230 kV S/S from Manalmedu 400 kV S/S

iii. Erection of S/C line to Poyyur 230 kV S/S from Manalmedu 400 kV S/S.iv. Erection of D/C line to the proposed Chidambaram 230 kV S/S from Manalmedu 400

kV S/S.v. Erection of D/C line to the proposed Virudhachalam 230 kV SS from Manalmedu 400

kV S/S.110 kV connectivity

i. LILO of existing Kadalangudy-LTPCL-Manalmedu 110 kV feeder between LTPCL and Manalmedu substation.

ii. S/C line to Kattumannar koil 110kV S/S.iii. S/C line to Sethiyathoppu 110kV SS.iv. D/C line to Pappakudi 110kV S/S.

v. S/C line to the sanctioned Naduvalur 110kV SS.


7.12. TANTRANSCO informed that they had proposed Neyveli TS-II – Cuddalore 400kV (quad)

D/c line for connectivity to Cuddalore and LILO of one ckt of Neyveli TS-II – Cuddalore

400kV (quad) D/c line at Manalmedu. Once the Neyveli TS-II 2nd Expn is available, they will

implement Neyveli TPS II 2nd Expn - Manalmedu 400 kV D/C (quad moose) line.

7.13. CTU informed that as per the proposal of TANTRANSCO for Manalmedu substation,

Manamledu, Cuddalore, Neyveli TS-II and Neyveli TS-II 2nd Expn are being integrated with

the Neyveli generation complex and the fault level of Neyveli complex would increase. The

purpose of isolating Neyveli TS-II 2nd Expn from the existing Neyveli complex in order to

control the fault level of Neyveli complex would not be served with the present proposal of

TANTRANSCO.

7.14. Members opined that since commissioning of Neyveli TS-II 2nd Expn. is not certain, the

connectivity of Manalmedu needs to be revised after detailed study.

7.15. CTUIL and SRLDC suggested to connect 400 kV Neyveli TS-II to Cuddalore 400 kV S/S to

reduce the loading on 400/230 kV ICTs at Neyveli TS-II. CTU added that the vacant bays at

Neyveli TS-II may be utilized by TANTRANSCO for termination of NLC TS-II – Cuddalore

400kV D/c line.

7.16. After deliberations, members agreed for the interconnection of Neyveli TS-II to Cuddalore

400 kV S/S with 400 kV D/c line. The line is to be implemented by TANTRANSCO on

urgent basis.

7.17. It was decided that the connectivity of Manalmedu 400 kV S/s would be discussed in a joint

study meeting between CEA, CTUIL, SRLDC, TANTRANSCO and subsequently in the next

SRPC(TP) meeting.

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8. Proposal for commissioning of ICT-3 at Tuticorin GIS

8.1. Director (PSPA-I), CEA, stated that CTUIL has informed that they had received request from

POWERGRID for commissioning of 1x500 MVA ICT (3rd ICT) along with associated bays

at Tuticorin-II (GIS) substation under Regional System Strengthening Scheme.

8.2. 1x500 MVA ICT-3 at Tuticorin-II (GIS) substation is under implementation as Southern

Regional System Strengthening scheme. Also the common facility works of “extension of

indoor GIS bus upto the gantry before bay no. 210 to the outdoor AIS bus bars of 230 kV

hybrid switchyard using GIB arrangement and necessary associated common infrastructure

works at Tuticorin-II GIS s/stn as part of associated works with augmentation of ICT 3” is

also under implementation. The Common Facility works had been approved in 1st meeting of

SRPC(TP) held on 16.12.2019 and 3rd meeting of the NCT held on 26th & 28th May, 2020.

The common facility works were allocated to POWERGRID under regulated tariff

mechanism (RTM) vide MoP OM dated 25.09.2020.

8.3. However, POWERGRID has sought charging of ICT-3 along with the ICT bays without the

availability of the common facility works associated with ICT-3, citing that the common

facilities works were not part of the original scope alongwith 3rd ICT and on receipt of

communication for common facility works, the work contract of 3rd ICT was amended on

11.6.2020 to include the common facility works with an implementation time of 8 months

(without taking the COVID-19 impact delays). The supplies are expected in June - July

21 and further two months for erection and testing of common facilities. Also considering the

load conditions during this peak generation and summer load season, the commissioning of

3rd ICT shall provide 'N-1' reliability for Tuticorin-II GIS substation for injection of RE

generations.


8.4. POWERGRID informed that the 3rd ICT was ready for commissioning in March, 2021,

however, due to delay in receipt of some equipment associated with common facility works,

they were unable to commission the common facility works and ICT. The common facility

works are expected to be ready by October, 2021.

8.5. Dy. COO (CTUIL) informed that the commissioning of 3rd ICT at Tuticorin GIS shall

provide 'N-1' reliability for already connected RE generations at Tuticorin-II GIS substation.

The common facility works shall facilitate the evacuation of additional RE power at

Tuticorin-II GIS substation. As there is delay in commissioning of common facility works,

the 3rd ICT may be commissioned.

8.6. Representative from TANGEDCO opined that commissioning of 3rd ICT at Tuticorin-II GIS

substation should be matched with the commissioning of associated RE generation projects.

8.7. KSEB also opined that 3rd ICT should be commissioned with associated generation.

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8.8. Chief Engineer (PSPA-I), CEA, opined that commissioning of the 3rd ICT at Tuticorin-II GIS

would provide additional reliability only for limited period of time. Once the planned RE

generation capacity is commissioned, the 'N-1' reliability would not be there. The common

facility works associated with ICT-3 are yet to be commissioned. Without the common

facility, additional RE generators cannot be connected to the sub-station.

8.9. CTUIL informed that as the 3rd ICT at Tuticorin-II GIS is being implemented as system

strengthening scheme, POWERGID is liable to commission the 3rd ICT along with common

facility works. Further, earlier LTA of about 1100 MW was granted and additional 540 MW

LTA was granted recently with requirement of 4th ICT. Considering the above and recent

tripping incident at Tuticorin-II, it is prudent to commission the 3rd ICT at Tuticorin-II.

8.10. Member (Power System), CEA, opined that the commissioning of 3rd ICT cannot be

considered solely on the basis of ‘N-1’non-compliance, as ‘N-1’ non-compliance will again

persist with the planned RE generations getting pooled at Tuticorin-II S/s. Moreover, the

commissioning of 3rd ICT just for the sake of ‘N-1’ contingency will have commercial

implication on other states.

8.11. After deliberations, it was agreed that the 3rd ICT at Tuticorin-II GIS substation shall be

commissioned along with the common facility works associated with ICT-3.

9. Requirement of 765 kV spare (1-Ph) Reactors units:

9.1. Director, CEA, stated that 765 kV transmission system forms backbone of the power

transmission network. Hence, reliability of the 765 kV transmission system is of utmost

importance.

9.2. Transportation of 765 kV equipment takes much more time than 400 kV units. Therefore, 765

kV S/s are generally planned with one spare unit (1-Ph) of 765/400 kV ICT, 240 MVAR/330

MVAR bus reactors and line reactors so that reliability of 765 kV grid can be maintained.

9.3. One spare unit (1-Ph) of 80 MVAR reactor has not been considered for 765 kV Warangal

New and Chilkaluripeta TBCB substations. Therefore, it is proposed to provide one spare

unit (1-Ph) of 80 MVAR reactor at each 765 kV Warangal New and Chilkaluripeta TBCB

substations along with necessary arrangement to take spare reactor units into service as per

requirement.


9.4. TANTRANSCO informed that data of the number spare reactors available in Southern

Region may be collected from PGCIL and the spare reactors at other substation may be

utilized in case of requirement. TANTRANSCO suggested to have limited number of spare

reactors for the Southern region instead of having one spare at each substation to reduce the

cost burden.

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9.5. After deliberations, members agreed to the proposal of providing one spare unit (1-Ph) of 80

MVAR reactor at each 765 kV Warangal New and Chilkaluripeta TBCB substations along

with necessary arrangement to take spare reactor units into service as per requirement.

10. Scheme to bypass NGR to use Switchable Line Reactor as Bus Reactor

10.1. Director, CEA, informed that SRLDC in its operational feedback has suggested to implement

NGR bypass arrangement for switchable line reactors to use them as bus reactor, in case of

outage of line. Implementation of Vemagiri – Chilkaluripeta 765kV D/c line along with 240

MVAR switchable line reactor at both ends of each circuit and Chilkaluripeta – Cuddapah

765kV D/c line along with 240 MVAR switchable line reactors at both ends of each circuit as

part of “Strengthening of transmission system beyond Vemagiri” was agreed as in the 37th

meeting of the SCPSPSR held on 31.07.2014. As per present arrangement, NGR bypass

arrangement has not been provided at Chilkaluripeta end for each circuit of Chilkaluripeta –

Cuddapah 765 kV D/c line and Vemagiri – Chilkaluripeta 765 kV D/c line.

10.2. To use switchable line reactors (240 MVAR each) as bus reactors installed on each circuit of

Vemagiri – Chilkaluripeta 765 kV D/c line and Chilkaluripeta – Cuddapah 765kV D/c line at

Chilkaluripeta 765kV S/s, it is proposed to implement NGR bypass scheme with suitable

arrangement.


10.3. SRLDC informed that if a line is taken out of service, switching of line reactor as bus reactor

would be helpful in controlling the grid voltage. However, it was noticed that in some TBCB

projects NGR bypass arrangement is not implemented. He suggested that NGR bypass

arrangement should be implemented for all the planned and upcoming schemes.

10.4. SRPC informed that the proposed NGR bypass scheme to use switchable line reactors (240

MVAR each) as bus reactors installed on each circuit of Vemagiri – Chilakaluripeta 765 kV

D/c line and Chilakaluripeta – Cuddapah 765 kV D/c line at Chilakaluripeta 765 kV S/s was

discussed and agreed in the OCC meeting of SRPC.

10.5. COO (CTUIL) suggested that as the cost of implementation of NGR bypass arrangement is

very minimal, some generic guidelines may be framed for implementation of NGR bypass

arrangement to use the switchable line reactors as bus reactor in case of outage of line for all

schemes planned in near future.

10.6. After deliberations, members agreed to implement NGR bypass arrangement to use

switchable line reactors (240 MVAR each) as bus reactors installed on each circuit of

Vemagiri – Chilkaluripeta 765 kV D/c line and Chilkaluripeta – Cuddapah 765 kV D/c line at

Chilkaluripeta 765 kV S/s.

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11. Conversion of fixed line reactor into switchable line reactor / bus reactor

11.1. Director, CEA, stated that high voltage due to Resonance / Oscillation have been observed

during tripping of lines, which are over compensated. Such conditions may cause permanent

failure of the equipment. To avoid such condition, fixed line reactor of over compensated

(80% to 120%) lines may be converted into switchable line reactor with inter-trip scheme

arrangement or may be converted into bus reactor on same bus.

11.2. Presently, Veltoor – Raichur 400 kV S/c line (about 74 km) is installed with 50 MVAR fixed

line reactor at Raichur TPS end under the ownership of Raichur TPS. SRLDC has reported

resonance phenomena on above mentioned line during tripping. In view of above, it is

proposed to convert fixed line reactor installed at Raichur TPS for Veltoor - Raichur 400 kV

S/c into switchable line reactor with inter trip scheme. If due to space constraint or any other

issue it is not possible to convert fixed line reactor as switchable line reactor, then same could

be converted into bus reactor at Raichur TPS.


11.3. Member Secretary (I/c), SRPC, suggested that resonance phenomenon during tripping could

be mitigated using a variable line reactor with suitable tapping arrangement.

11.4. Sr. DGM (CTUIL) informed that when the line is compensated in the range of 80% to 120%

of the line reactance, the reactance of line resonantes with the grading capacitance of CB

during single pole auto reclose. The variable line reactor cannot mitigate such resonance

phenomena. He added that the scheme viz. conversion of fixed line reactor into switchable

line reactor has been implemented at most of the stations and it is pending at Raichur TPS.

11.5. After deliberations, it was agreed that KPTCL will take up the matter with KPCL for

converting fixed line reactor installed at Raichur TPS end of Veltoor - Raichur 400 kV S/c

line into switchable line reactor with inter -trip scheme.

12. Transmission system for grant of Connectivity to NPCIL for expansion of Kudankulam

NPP Unit 3&4 (2x1000 MW)

12.1. Transmission scheme for grant of connectivity to NPCIL for expansion of Kudankulam NPP

Unit 3&4 (2x1000 MW) was discussed in the 1st SRPC(TP) meeting held on 16.12.2019

wherein following transmission system was agreed:

i. Restoration of Kudankulam – Tirunelveli 400 kV D/c (Quad) line by terminating it

at Tirunelveli substation [presently this line is connected to Tirunelveli – Tuticorin

PS 400 kV D/c (Quad) line and thus form Kudankulam (Unit-1&2) – Tuticorin PS

400kV D/c(Quad) line]– Under ISTS

ii. Kudankulam NPP (Unit-3&4) - Tuticorin PS 400 kV D/c (Quad) line [by

implementing Kudankulam-Tirunelveli section and extending this upto Tuticorin PS,

using the Tirunelveli-Tuticorin PS –400 kV D/c (Quad) existing line as mentioned in

(a) above]– Under ISTS.

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iii. Termination of one circuit of each of Kudankulam Unit-1&2 – Tirunelveli 400 kV

2xD/c (Quad) line at Kudankulam Unit-3&4 and one circuit of Kudankulam Unit-

3&4 - Tuticorin PS 400 kV D/c (Quad) line at Kudankulam Unit-1&2. This

arrangement shall result into 3 nos. of 400 kV quad circuits from Kudankulam Unit-

1&2 and Kudankulam Unit-3&4 generating stations – transmission line works under

ISTS and re-arrangement works alongwith 400kV bays at generation switchyard –

by NPCIL.

iv. 2x125 MVAR, 420kV bus reactor at Kudankulam (Unit-3&4) – by NPCIL

12.2. In 2nd SRPC(TP) meeting, CTU informed that NPCIL had not submitted Long Term Access

(LTA) application for Kudankulam Unit – 3&4 as per CERC Connectivity Regulations, 2009.

In view of the above, it was agreed that connectivity for Kudankulam NPP Unit-3&4 may be

provided through bus extension of Kudankulam NPP Unit-1&2 generation switchyard with

suitable bus sectionalize arrangement under the scope of NPCIL. The transmission system

agreed in 1st SRPC(TP) meeting would be taken up upon receipt of LTA application from

NPCIL.

12.3. NPCIL vide letter No. NPCIL/Trans/2020/M/33 dated 30.10.2020, had informed that the

connectivity requirement of KKNPP- 3&4 will be in February, 2024.

12.4. Subsequently, NPCIL vide letter dated 04.02.2021 has submitted comments on the minutes of

the 2nd SRPC(TP) held on 01.10.2020, wherein NPCIL has informed that extension of 400 kV

bus from KKNPP-1&2 to KKNPP-3&4 via sectionalizer has not been envisaged and cannot

be implemented. Sectionalizer is not a part of KKNPP scheme on account of the following:

The switchyards for KKNPP-1&2 and KKNPP-3&4 are separate, with a distance of

about 1.5 km between them.

KKNPP-3&4 does not have any bay for this purpose. There are total 4 nos. of bays

out of which three bays are for transmission line connection.

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12.5. It was proposed that if bus extension at KKNPP-1&2 is not feasible then connectivity to

KKNPP-3&4 may be provided through interconnection between KKNPP-1&2 and KKNPP-

3&4. Interconnection line between KKNPP-1&2 and KKNPP-3&4 may be utilized for

termination of line as per proposed arrangement at Fig.2.


12.6. Sr. DGM (CTUIL) stated that no LTA application has been received by CTUIL till date from

NPCIL, despite such commitment from NPCIL since past 2 years.

12.7. Representative from NPCIL stated that the project is being undertaken with the help of

Russian authorities and there is likely delay in the implementation of the project. NPCIL will

intimate the firm commissioning schedule of the project in the LTA application which is

expected to be submitted soon. He further informed that requirement of construction power

shall be met from the DISCOMs.

12.8. COO (CTUIL) suggested that since a lot of uncertainty is involved in the subject project,

NPCIL may construct the interconnection line between KKNPP-1&2 and KKNPP-3&4 to

prevent mismatch between the connectivity transmission system and the generation project.

Further, NPCIL may explore options including cable for the interconnection. Transmission

system for evacuation of power from KKNPP-3&4 is already agreed and the same may be

taken-up for implementation after submission of LTA application and CBG.

12.9. Sr. DGM (CTUIL) stated that the connectivity application has been pending for long time.

Either the application may be closed or connectivity may be granted to NPCIL through the

following transmission system:

Bus extension of Kudankulam NPP Unit-1&2 generation switchyard with suitable bus

sectionalizer arrangement under the scope of NPCIL;

or

Interconnection between KKNPP-1&2 and KKNPP-3&4 generation switchyards

through laying of 400 kV overhead transmission line or cable.

12.10. Representative from NPCIL stated that they will discuss with their management regarding the

feasibility of the connectivity transmission system through bus extension of KKNPP-1&2 or

interconnection between KKNPP-1&2 and KKNPP-3&4 and inform the same within a week.

He also agreed to inform about the start date of the connectivity.

12.11. TANGEDCO enquired about the allocation of power from KKNPP-3&4 and generation

commissioning schedule. Towards this, representative from NPCIL stated that there is no

power allocation from KKNPP-3&4 at present. Further the tentative commissioning schedule

of KKNPP-3&4 may be considered as August, 2024 as of now.

12.12. It was further informed that 2x125 MVAR reactors have also been proposed for the subject

connectivity of KKNPP-3&4. NPCIL agreed for the same. On a query raised by KSEB

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towards sharing of charges of these reactors, it was informed that the same would be under

the scope of generator and shall not be part of ISTS transmission charges.

12.13. After detailed deliberations, it was agreed that connectivity application may be closed in case

of NPCIL does not respond as agreed above. However, upon receipt of confirmation from

NPCIL within stipulated time as agreed, connectivity may be granted to NPCIL for KKNPP-

3&4 through the following transmission system:

i. Bus extension of Kudankulam NPP Unit-1&2 generation switchyard with suitable bus

sectionalizer arrangement (under the scope of NPCIL);

or

Interconnection between KKNPP-1&2 and KKNPP-3&4 generation switchyards

through laying of 400 kV overhead transmission line or cable.

ii. 2x125 MVAR bus reactor at KKNPP-3&4 – under the scope of NPCIL

13. Implementation of bays at ISTS Substation under the scope of ISTS for termination of

dedicated line of RE generators:

13.1 1 no. of 230 kV bays at 400/230 kV Tuticorin Substation

13.1.1Director, CEA informed that in the 48th & 54th Southern Region constituents meetingregarding Connectivity/LTA applications held on 27.11.2020 & 28.05.2021 respectively,Stage-II Connectivity to M/s JSW Renew Energy Ltd. & M/s JSW Future Energy Ltd wasagreed for grant as per the following details:

Applicant

Nature ofapplicant

Agreedin

Stage-IConnectiv

ityQuantum

(MW)

Stage-IIConnecti

vityQuantum

(MW)

Start dateof Stage-

IIConnecti

vity

Proposedlocation for

Grant ofStage-II

Connectivity

DedicatedTransmission

System(Under scopeof applicant)

JSWFutureEnergy

Ltd

Generator (Wind)

54th SRConn/LT

A meeting300 300 31.10.2022

Tuticorin-IIGIS PS

(ErstwhileTirunelveli GIS PS)

JSW FutureEnergy Ltd –Tuticorin-II230kV S/cline alongwith bays atgeneratorend underscope ofapplicant.

13.1.2 In meeting, M/s JSW Future Energy Ltd had requested that implementation of bays at ISTSsubstation may be kept under the scope of ISTS licensee. As per clause 5.3 of the RevisedDetailed Procedure for Grant of connectivity to projects based on renewable sources toISTS,

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“For Connectivity, the dedicated transmission line including line bay(s) at generatorpooling station shall be under the scope of the Applicant and the associated bay(s) atthe ISTS sub-station shall be under the scope of transmission licensee owning theISTS sub-station subject to compliance of relevant provisions of Tariff Policy.Provided that the Applicant may, if it so chooses, construct the associated bay(s) atits own cost, subject to approval of the CTU and agreement with the transmissionlicensee owning the ISTS sub-station.”

Accordingly, in 54th Southern Region constituents meeting, one 230 kV bay at Tuticorin-IIGIS PS was agreed for implementation under the scope of ISTS licensee in line with clause5.3 of the Revised Detailed Procedure for Grant of connectivity to projects based onrenewable sources to ISTS.

13.1.3CTUIL iformed that M/s JSWFEL vide letter dated 27.08.2021 has requested forimplementation of 230kV bay at Tuticorin-II substation by JSW Future Energy Ltd.Accordingly, the bays would not be required to be implemented under ISTS scope.

13.1.4Members noted the same.

13.2 1 no. 400 kV bay at 765/400 kV Kurnool (New) Substation

13.2.1Director, CEA informed that in the 46th Southern Region constituents meeting of CTUregarding Connectivity/LTA applications held on 28.09.2020, M/s Greenko AP01 IREP PvtLtd was granted 900 MW Stage-II Connectivity at Kurnool (New) substation as per thefollowing details:

Applicant

Nature ofapplicant

Location Stage-IConnecti

vityQuantum

(MW)

Stage-IIConnectivi

tyQuantum

(MW)

Startdateof

Stage-II

Connectivi

ty

locationfor Grantof Stage-

IIConnecti

vity

Dedicated TransmissionSystem

(Under scope of applicant)

Greenko AP01 IREP Pvt. Ltd.

Generator (Hybrid)Solar with storage

Kurnool, AP

900 900 04.02.22

Kurnool (New) 765/400 kV Substation

Greenko AP01 IREPPvt. Ltd – Kurnool New400 kV S/c line strungon D/c tower (with highcapacity conductorenabling at least 900MW power transfer atnominal voltage likequad moose conductoretc.) along with bay(s) atgenerator and Kurnool(New) end

13.2.2Subsequently, M/s Greenko AP01 IREP Pvt Ltd vide letter dated 25.11.2020, had requestedthat implementation of 400kV bay at Kurnool (new) end for termination of their dedicated

39


1044


line may be kept under the scope of ISTS licensee. The matter regarding implementation ofbay under the ISTS was taken up for discussion in the 49 th Southern Region constituentsmeeting regarding Connectivity/LTA applications held on 29.12.2020. In the meeting, it wasagreed that 400 kV bay at Kurnool (New) substation may be implemented under the scopeof ISTS licensee in line with the clause 5.3 of the Revised Detailed Procedure for Grant ofconnectivity to projects based on renewable sources to ISTS.

13.2.3After deliberations, it was agreed to take up implementation of 400kV bay at Kurnool(New)substation under ISTS for grant of connectivity to Greenko AP01 IREP Pvt. Ltd.

14. Use of switchable line reactors as bus reactors at Kurnool Sub-Station:

14.1. Director, CEA, informed that in 37th SCPSPSR meeting held on 31st July 2014, the scheme

“Additional inter‐Regional AC link for import into Southern Region i.e. Warora – Warangal

and Chilakaluripeta ‐ Hyderabad ‐ Kurnool 765 kV link” was agreed as part of the System for

increasing capacity of Inter‐State Transmission system for import of power into SR up to

2018‐19. Scheme was awarded to M/s Essel Infra projects Ltd, through TBCB route. The

scheme includes Hyderabad– Kurnool 765 kV D/c line with 240 MVAR switchable line

reactor at Kurnool end. As per Gazette notification, POWERGRID to provide bays at

Kurnool 765kV S/s for termination of Hyderabad– Kurnool 765 kV D/c line with 240 MVAR

switchable line reactor at Kurnool end.

14.2. In 35th SRPC meeting held on 02.02.2019, following is noted.

“the nodes at Maheswaram and Kurnool were experiencing high voltages and foreffective management of the system, POSOCO was instructing closing and opening ofthe lines on a daily basis. For the TBCB line coming from Warora, PGCIL was carryingout the works of bay extension at Warangal, Maheswaram and Kurnool. The contractualschedule was around February/March 2019 while the lines were expected by November2019. However, PGCIL was ready with bays at Kurnool with two reactors (2 x 240MVAR) which could be energized by end of February 2019 or first week of March 2019.The reactors were likely to reduce the voltages of 765 kV node by 10 – 11 kV and about4-5 kV of 400 kV node at Kurnool, if the reactors are permitted to be commissioned bythe forum.”

After deliberation it was agreed for early commissioning (end of February 2019/first week ofMarch 2019) of the line reactors at Kurnool for voltage management.

14.3. As per latest status on 31.05.2021, the Hyderabad– Kurnool 765 kV D/c line got stuck in

severe RoW issue and also got impacted due to COVID-19. The anticipated CoD of the

scheme is October, 22. Further, SRLDC in its quarterly report for quarter-III & quarter -IV of

2020-21 has mentioned that voltage remains very high most of the time of whole year at

Kurnool PG 400 kV bus.

40


1045


14.4. In view of above, it is proposed that 2x240 MVAR switchable line reactors at Kurnool 765

kV S/s for Hyderabad– Kurnool 765 kV D/c line may be continued to be used as bus reactor

till commissioning of Hyderabad– Kurnool 765 kV D/c line.

Deliberations in 3rd SRPC(TP) Meeting

14.5. Representative from TANGEDCO opined that as the Hyderabad– Kurnool 765 kV D/c line is

delayed, the tariff liability of 2x240 MVAR reactors shall be borne by TBCB licensee on

account of delay in commissioning of associated transmission lines and not by the

beneficiaries. CTUIL informed that the matter regarding sharing of cost of the reactor is

presently being take up with CERC.

14.6. Chief Engineer (PSPA-I), CEA, enquired about the controlling of bus voltage at Kurnool S/s

after commissioning of Hyderabad– Kurnool 765 kV D/c line as 2x240 MVAR reactors will

then be used as switchable line reactors.

14.7. Sr. DGM (CTUIL) informed that the switchable line reactors have been planned to address

the reactive power compensation requirements of the 765 kV DC line. Also, these switchable

line reactors may be utilized as bus reactors on the instructions of SRLDC as per the system

requirements. Further, it is to highlight that a number of planned bus reactors at STU

substations have not been implemented (mentioned at agenda item 5.3) on account of which

high voltages have been observed at a number of substations in Southern Region Grid.

Accordingly, it was proposed that 2x240 MVAR switchable line reactors at Kurnool 765 kV

S/s for Hyderabad– Kurnool 765 kV D/c line may be used as bus reactors till commissioning

of the line.

14.8. After deliberations, members agreed to the proposal of using 2x240 MVAR switchable line

reactors at Kurnool 765kV S/s as bus reactor till commissioning of Hyderabad– Kurnool

765kV D/c line.

15. Augmentation of Transformation Capacity in Southern Region:

15.1. Director, CEA, informed that the present peak demand (2020-21) for Southern Region is

about 58,400 MW and it is likely to increase to 74,000 MW by 2024-25 (as per 19th EPS). To

meet the power demand and facilitate power drawl by STUs from the grid, detailed study

analysis has been carried out regarding requirement for transformation capacity augmentation

in time frame of 2024-25. STU wise peak demand for 2020-21 and expected peak demand for

2024-25 are tabulated below.

Sl.No.

STU Peak Demand in2020-21 (MW)

Projected Peak Demandfor 2024-25 (MW)(as per 19th EPS)

Peak Demandconsidered for2024-25 (MW)

1. Andhra Pradesh 11193 14600 128002. Telangana 13688 16900 16000

41


1046


3. Karnataka 14367 16700 163004. Kerala 4284 6000 58005. Tamil Nadu 16481 24200 228006. Puducherry 421 650 570

Southern Region 58400 74650 74200

Detailed System Study results with ICTs flows at various substations in Southern Region aregiven at Annex-15. From the study results it is observed that loading on the ICTs at some ofthe substations are on higher side and the ICT augmentation is required at these sub-stations.

The list of substations under ISTS and STUs where transformation capacity augmentation isrequired are tabulated below:

Sl. No.

Transmission License

Substation VoltageLevel(kV)

Existing & UC ICTCapacity (MVA)

Expected ICTloading (MW)

Remarks

All ICTs in service

With N-1

Study Analysis for Morning Peak, March 2025

1. KPTCL Guttur 400/220 2x315 2x225 1x2872. KPTCL Peenya 400/220 2x500 2x317 1x4523. APTRANSCO Kurnool 400/220 3x315 2x228 2x2884. APTRANSCO Rachagunneri 400/220 2x315 2x230 1x3065. APTRANSCO Kakinadasez 400/220 2x500 2x445 -----6. TSTRANSCO Dichipalli 400/220 3x315 3x220 2x3987. TSTRANSCO Narsapur 400/220 2x315 2x236 1x2998. TANTRANSCO Salem 400/110 3x200 3x184 2x2459. TANTRANSCO S P budur 400/110 2x200 2x167 2x19810. TANTRANSCO Edayarpalayam 400/110 3x200 3x220 ----11. TANTRANSCO Velalividu 400/110 2x200 2x148 1x23012. TANTRANSCO Ariyalur 400/230 2x500 2x327 1x49113. TANTRANSCO Ariyalur 765/400 2x1500 2x1203 1x180014. TANTRANSCO Manalmedu 400/230 2x500 2x416 1x66815. KSEB Kottayam 400/220 2x315 2x276 1x35516. KSEB Madkthra 400/220 3x315 3x238 2x29317. KSEB Kasargode 400/220 2x315 2x258 1x14518. POWERGRID Trivandrum 400/220 3x315 3x224 2x30319. POWERGRID Cochin 400/220 2x315+1x50

02x204 +1x326

2x280 Space not available for4th ICT augmentation

20. POWERGRID Elappuly 400/220 2x315 2x198 1x30321. POWERGRID Narendra 400/220 2x500 2x280 1x430 Space not

available for3rd ICT augmentation

22. POWERGRID Nizamabad 765/400 2x1500 2x1100 1x170023. POWERGRID Hosur 400/220 3X315 3x235 2x300

Study Analysis for Evening Peak, March 2025

24. POWERGRID Kolar 400/220 2x500 2x254 1x418

15.2. POWERGRID has communicated that space is available for augmentation of transformation

capacity at Trivandrum, Elappully (Palakkad), Kolar and Nizamabad S/s. Further, it is also

42


1047


informed that for augmentation of 1x500 MVA, 400/220 kV ICT at Kolar, cables will be

required for interconnection between ICT and 220 kV bus.

15.3. Towards augmentation of transformation capacity at Hosur S/s, POWERGRID informed that

ICT bays are not available for augmentation of transformation capacity. However, space is

available for future 400 kV line bays, however, due to severe RoW issues, these line bays

cannot be utilized for termination of line. Further, 1x63 MVAr bus reactor is installed

adjacent to 3x315 MVA ICTs and 220 kV switchyard. The 400/230kV, 1x500 MVA 4th ICT

may be accommodated by shifting of 63 MVAr bus reactor to available 400 kV line bays.

Accordingly, it is proposed that transformation capacity with 1x500 MVA, 400/230 kV ICT(4th) may be augmented at Hosur substation by shifting of 1x63 MVAR bus reactor toavailable 400 kV line bays with suitable arrangement.

15.4. Regarding, Narendra and Cochin substation, POWERGRID has informed that space is not

available for augmentation of 3rd and 4th ICT respectively.

15.5. In view of above, augmentation of transformation capacity is proposed at following locations.

Sl. No.


Substation

Voltage Level(kV)

Existing & UC ICTCapacity(MVA)

ExpectedICT loadings

(MW)

Proposed ICT augmentation Capacity (MVA)

Remarks

All ICTs inservice

With ‘N-1’

1. KPTCL Guttur 400/220

2x315 2x225 1x287 1x500

2. KPTCL Peenya 400/220

2x500 2x317 1x452 1x500

3. APTRANSCO

Kurnool400/220

3x315 2x228 2x288 1x500

APTRANSCO informedthat detailed study is beingcarried out on the proposalof 3rd ICT and theobservations will befurnished to CEA withstudy results. However, analternate arrangementmade in the 1st week ofMarch-2021 in 220 kVBus at 400 kV Ghani S/s.With this arrangement,loading on ICTs atKurnool were reduced.

4. APTRANSCO

Rachagunneri400/220

2x315 2x230 1x306 1x500

APTRANSCO informedthat 3rd 315 MVA ICT wasproposed to feed industrialloads and it is under study.Proposal along with studyresults will be furnished toCEA shortly.

5. APTRANSCO

Kakinadasez400/220

2x500 2x445 ----- 1x500APTRANSCO informedthat they will study andinform to CEA.

6. TSTRANSCO Dichipalli 400/220

3x315 3x220 2x398 1x500

43


1048


Sl. No.


Substation

Voltage Level(kV)

Existing & UC ICTCapacity(MVA)

ExpectedICT loadings

(MW)

Proposed ICT augmentation Capacity (MVA)

Remarks

All ICTs inservice

With ‘N-1’

7. TSTRANSCO Narsapur 400/220

2x315 2x236 1x299 1x500

8. TANTRANSCO

Salem 400/110

3x200 3x184 2x245 1x200

9. TANTRANSCO

S P BUDUR

400/110

2x200 2x167 2x198 1x200

10. TANTRANSCO

Edayarpym

400/110

3x200 3x220 ---- 1x200

11. TANTRANSCO

Velalividu 400/110

2x200 2x148 1x230 1x200

12. TANTRANSCO

Ariyalur 400/230

2x500 2x327 1x491 1x500

13. TANTRANSCO

Ariyalur 765/400

2x1500 2x1203 1x1800

1x1500

14. TANTRANSCO

Manalmedu 400/230

2x500 2x416 1x668 1x500

15. KSEB Kottayam 400/220

2x315 2x276 1x355 1x500

16. KSEB Madkthra 400/220

3x315 3x238 2x293 1x500

17. KSEB Kasrgode 400/220

2x315 2x258 1x145 1x500

18. POWERGRID

Trivdrum 400/220

3x315 3x224 2x303 1x500

19. POWERGRID

Elappully 400/220

2x315 2x198 1x303 1x500

20. POWERGRID

Nizamabad

765/400

2x1500 2x1100 1x1700

1x1500

21. POWERGRID

Hosur 400/220

3x315 3x235 2x300 1x500

22. POWERGRID

Kolar 400/220

2x500 2x254 1x418 1x500

15.6. Further, POWERGRID informed that loading of more than 100% has been observed on all

three ICTs at some occasions at Mysore S/s. Presently, Mysore substation has 2x315 + 1x500

MVA transformation capacity. Loading pattern of ICTs observed between Dec’ 2020 to

March’ 2021, as informed by POWERGRID are tabulated below:

Time Period ICT#1 (315 MVA) ICT#2 (315 MVA) ICT#3 (500 MVA)

Nov’2020 222 221 378

Dec’2020 252 252 422

Jan’2021 267 289 481

Feb’2021 300 300 494

Mar’2021 317 316 517

44


1049


15.7. SRLDC in its operational feedback also mentioned that ISTS substation at Mysore is not

complying with 'N-1' contingency criteria of ICTs.

15.8. In this regard it may be pointed out that KPTCL has planned 2x500 MVA, 400/220 kV S/s at

Kadakola for relieving loading on ICTs at Mysore and meeting the increasing demand of the

area. The same was discussed and agreed in 2nd SRSCT meeting held on 10th June 2019.

However, it may be noted that Kadakola substation is yet to be awarded and can be expected

in 24 - 36 months.

However, loading of more than 100% may cause failure of entire Mysore S/s and may resultin blackout of large area in and around Mysore city. Till the commissioning of Kadkola S/s,loadings on ICTs at Mysore S/s shall remain critical.

15.9. In view of delayed commissioning of Kadkola S/s and critical loadings of ICTs at Mysore, it

was proposed that Mysore substation may be augmented with 1x500 MVA, 400/220 kV (4 th

ICT) transformation capacity. POWERGRID has informed availability of space for

transformation capacity augmentation at Mysore S/s, however 400kV & 220kV spare ICT

bays are not available. Further the space available may not be sufficient for ICT and ICT AIS

bays. After analysis, it was found that in the available space ICT and 400 kV & 220 kV

outdoor GIS ICT bays can be accommodated.

Accordingly, it is proposed to augment transformation capacity by 1x500 MVA, 400/220 kV

ICT (4th) at Mysore ISTS S/s along with outdoor GIS ICT bays, both 400 kV & 220 kV bays,

and other required suitable arrangement under compressed time schedule.


15.10.Representative from KSEB informed that peak demand considered for 2024-25 as per 19th

EPS seems to be on higher side. He opined that the ICT augmentation at Trivandrum S/s,

Kottayam S/s, Madakthara S/s and Kasargode S/s may be discussed in a separate Joint study

meeting.

15.11.CEA requested KSEB to submit the projected demand for 2024-25 to carry out the system

studies.

15.12.KPTCL informed that loading on ICTs at 400/220 kV Guttur will be reduced with

commissioning of 220 kV connectivity between 400/220 kV Jagalur and Chitradurga and the

line will be implemented by March, 2022. 400/220 kV ‘A’ station at Peenya is planned to

reduce the loading on 400/220 kV Peenya ICTs and alternate transmission scheme for 400 kV

incoming line for ‘Peenya -A’ station is also being examined. KPTCL added that loading on

ICTs at Mysore S/s would be relieved after commissioning of Kadakola substation which

would take 2-3 years.

15.13.Regarding ICT augmentation at Mysore S/s, Sr. DGM (CTUIL) informed that all the three

ICTs at Mysore S/s are getting overloaded under present loading condition and even with the

commissioning of 4th ICT, Mysore S/s would not be complied with 'N-1' contingency criteria.

45


1050


Considering the loading pattern at Mysore S/s, 4th ICT at Mysore is urgently required as the

Kadakola substation is expected to be commissioned by March 2024.

15.14.CGM, SRLDC also opined that augmentation of ICTs at Mysore is required on urgent basis.

SRPC also opined the same and mentioned for augmentation of transformation capacity at

Mysore S/s.

15.15.Chief Engineer (PSPA-I), CEA, enquired about the timeframe of commissioning of 4 th ICT at

Mysore S/s. Sr. DGM (CTUIL) informed that implementation of 4th ICT by POWERGRID

under RTM would take 18-24 months.

15.16.KPTCL explained that 400 kV sub-station at Kadakola is approved in view of providing

loading relief to 400/220 kV ICTs at Mysore (Bastipura). Further, another 400 kV sub-station

at Hampapura in Mandya district is also approved which will reduce the ICT loading at

Mysore (Bastipura). Hence the proposal of transformer augmentation at Mysore may cause

under-utilisation of transformers at the proposed 400 kV Kadakola S/s. Kadkola S/s is likely

to be commissioned by March, 2024. DPR has been prepared and tendering is to be done

shortly.

15.17.Other states informed that requirement of additional ICTs at other substations would be

informed after carrying out the detailed studies.

15.18.After deliberations, additional ICTs at 400/220 kV Palakkad (1x500MVA), 765/400 kV

Nizamabad(1x1500MVA), and 400/220 kV Kolar (1x500MVA)were agreed.

16. Short Circuit studies for Southern Region

16.1. Director, CEA, informed that in the 1st SRPC(TP) meeting held on 16.12.2019, CTU had

informed about the likely locations where high short circuit level could be observed for 2023-

24-time frame. In the meeting, it was decided that STUs may also carry out detailed studies

for identification of locations where fault levels were expected to cross the design limits and

suggest necessary measures for control of fault level. Details of short circuit current and

switchyard rating of ISTS and STU substations as informed are tabulated below.

Sl.No.

SubstationVoltage

level (kV)3-Ph

SC (kA)1-Ph

SC (kA)Ownership

Switchyard rating (kA) / Remarks

1. Maheshwaram-TS 400 63.7 45.5 TSTRANSCO 50

2. Maheshwaram 400 63.5 45.6 POWERGRID 63

3. Udumalpet 400 51.8 37.1 POWERGRID 40

4. Yadadri 400 49.3 49.9 TSTRANSCO 50

5. Chittor 400 47.4 33.5 APTRANSCO

APTRANSCO informed thatexisting switchyard rating is40 kA. The fault level isexpected to remain withindesign limits with the controlfault level at Thiruvalam S/s

46


1051


Sl.No.

SubstationVoltage

level (kV)3-Ph

SC (kA)1-Ph

SC (kA)Ownership

Switchyard rating (kA) / Remarks

6. Dindi 400 46.9 33.2 TSTRANSCO 50

7. Edayarpalayam 400 46.7 33.3 TANTRANSCO 63

8. Tirunelveli 400 45.7 35.0 POWERGRID 40

9. Hyderabad-TS 400 45.5 31.0 TSTRANSCO 40

10. Kurnool 400 45.1 33.3 APTRANSCO

APTRANSCO informed thatexisting switchyard rating is40 kA. Rating of theSwitchgear of 400 kVGhani-Kurnool D/C linesand 400 kVJammalamadugu- KurnoolD/C lines is 50 kA (atKurnool S/s).

A study may be carried outto reduce the short circuitlevels at Kurnool S/s.

11. Kurnool 765 40.5 27.5 POWERGRID 40

16.1.1. In the 2nd SRPC(TP) meeting, it was decided that the scheme to control the fault level at

Maheshwaram-TS may be evolved through joint system study with participation from CEA,

SRPC, CTU, TSTRANSCO and POSOCO/SRLDC. It was also decided that scheme for

controlling fault level at Kurnool (APTRANSCO), Hyderabad-TS (TSTRANSCO),

Tirunelveli (POWERGRID) may be put-up for discussions in subsequent SRPC(TP)

meetings.

16.1.2. Accordingly, the proposal was discussed in the joint study meeting held on 04.02.2021. In the

meeting, Sr. GM (CTU) gave presentation on uprating of existing substation on increasing

short circuit current. He informed that following can inter-alia be implemented for mitigating

the short circuit fault level:

i. Up gradation of substation equipments

ii. Splitting of Bus bar

iii. Higher impedance transformer/ICTs for the proposed substation

16.2. Scheme to control fault level at Udumalpet S/s: The scheme to control fault level at

Udumalpet S/s was discussed in 2nd SRPC(TP) meeting. From the system studies for 2023-

24-time frame, the 3-phase short circuit levels at 400 kV bus of Udumalpet S/s were observed

to be of the order of about 49 kA, whereas the substation has been designed for 40 kA fault

level. SLD of Udumalpet S/s is depicted below.

47

Tirunelveli Palakkad-1 Salem Tappagundu

400kV bus

Palakkad-2

AnaikadavuMaduraiArasur+ 200 MVAr STATCOM

Section BSection A


1052


Fig: Schematic for Transmission system for controlling high Short Circuit Current level at Udumalpet 400/230kV substation

In order to control the fault current levels at 400 kV Udumalpet bus, the 400 kV bus has been

segregated into two sections (Section A & B) and series reactors have been introduced in the

sections to control the fault levels along with bypassing of some of the transmission lines as

well. The alternatives and the results are provided in the table below. From the study results it

is observed that in case of Altenative-3, the fault currents in both sections of the Udumalpet

400 kV bus remains well within 40 kA limit, the designed fault levels of the bus.

Alternative

Scheme Connectivity Details3-Ph Fault current

(kA)

Section-A Section-B

Base case

Palakkad D/c line, Arasur D/cline, Edayarpalayam(quad) D/cline, Tirunelveli D/c line, SalemD/c line, Madurai S/c line,Tappagundu S/c line, AnaikadevuS/c line and 3x315 MVA,400/230kV ICTs

49.1 -

1

12Ω, 420kV faultlimiting bus seriesreactors between BusSection-A and BusSection-B

Bus section-A: One ckt. of Palakkad D/c line,Arasur D/c line, Edayarpalayam(quad) D/c line, Tirunelveli D/cline, + 200 MVAr Statcom

Bus section-B: 2nd ckt. of Palakkad D/c line,Salem D/c line, Madurai S/c line,Tappagundu S/c line, AnaikadevuS/c line and 3x315 MVA,400/230 kV ICTs

38.238.3

2

12Ω, 420kV faultlimiting bus seriesreactors between BusSection-A and BusSection-B

12Ω, 420 kV faultlimiting series linereactor in Udumalpet –Anaikadevu 400kV S/cline at Udumalpet

Bus section-A: One ckt. of Palakkad D/c line,Arasur D/c line, Edayarpalayam(quad) D/c line, Tirunelveli D/cline, + 200 MVAr Statcom

Bus Section-B: 2nd ckt. of Palakkad D/c line,Salem D/c line, Madurai S/c line,Tappagundu S/c line, AnaikadevuS/c line and 3x315 MVA,400/230 kV ICTs.

38.236.2

48

230kV bus

3x315 MVA ICTsEdayarpalayam


1053


Alternative

Scheme Connectivity Details3-Ph Fault current

(kA)

Section-A Section-B

3

12Ω, 420 kV faultlimiting bus seriesreactors between BusSection-A and BusSection-B.

Bypass of one ckt ofUdumalpet – Arasurand Udumalpet –Anikadevu atUdumalpet to formAnikadevu – Arasur400kV S/c line.

Bus section-A: One ckt. of Palakkad D/c line,Arasur S/c line, Edayarpalayam(quad) D/c line, Tirunelveli D/cline, + 200 MVAr Statcom

Bus Section-B: 2nd ckt. of Palakkad D/c line,Salem D/c line, Madurai S/c line,Tappagundu S/c line and 3x315MVA, 400/230kV ICTs.

35.7 32.5

16.2.1. From the above table it was observed that Alternative-3 is suitable for control of fault level at

Udumalpet S/s. Accordingly, following transmission system strengthening scheme was

proposed for controlling fault level at 400 kV bus of Udumalpet substation:

a) 12Ω, 420 kV fault limiting bus series reactors between Bus section-A and bus Section-

B

b) Bypassing one ckt of Udumalpet – Arasur line and Udumalpet – Anikadevu line at

Udumalpet to form Anikadevu – Arasur 400kV S/c line.

16.2.2. In the 2nd SRPC(TP) meeting, TANTRANSCO had proposed that bypass of Udumalpet –

Anikadevu line and one ckt of Udumalpet - Edayarpalyam line may be carried out instead of

bypass of Udumalpet – Anikadevu line and one ckt of Udumalpet – Arasur line. In the

meeting, it was decided that CEA, SRPC, CTU, TANTRANSCO and SRLDC/ POSOCO

may jointly study the scheme for controlling fault level at Udumalpet S/s.

16.2.3. In the joint study meeting held on 04.02.2021, TANTRANSCO representative stated that the

Udumalpet– Edayarpalyam line is quad moose whereas Udumalpet – Anikadevu line is twin

moose, so they agree to the earlier proposal of bypassing of Udumalpet – Anikadevu line and

one circuit of Udumalpet – Arasur line at Udumalpet to control the short circuit fault level at

Udumalpet bus (Alternative-3).


16.3. CTUIL requested to defer the above proposal and informed that they would present the

revised proposal in next SRPC(TP) Meeting. After deliberations, it was decided to deter the

above proposal (Alternative-3) for controlling fault level at Udumalpet S/s and CTUIL was

advised to submit the revised proposal to CEA for further discussion in next SRPC(TP)

Meeting.

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17. Phasing of transmission system for evacuation of power from potential REZ in Karur &

Gadag

17.1. Transmission Scheme for Evacuation of power from RE sources in Karur/ Tiruppur

Wind Energy Zone (Tamil Nadu) (2500 MW):

Director (PSPA-I), CEA informed that the “Transmission Scheme for Evacuation of powerfrom RE sources in Karur/ Tiruppur Wind Energy Zone (Tamil Nadu) (2500 MW)” wastaken-up for discussion in the 4th NCT meeting held on 20.01.2021 and 28.01.2021, whereinphasing of the scheme was decided. Subsequently, MoP vide Gazette notification dated19.07.2021, has notified Phase I of the Scheme as given below:

Transmission Scheme for Evacuation of power from RE sources in Karur/ TiruppurWind Energy Zone (Tamil Nadu) (1000 MW) under Phase-I :

Establishment of 2x500 MVA, 400/230 kV Karur Pooling Station

LILO of both circuits of Pugalur – Pugalur (HVDC) 400 kV D/c line (with Quad MooseACSR Conductor) at Karur PS

4 Nos. of 230 kV line bays at Karur PS (to be implemented as part of ISTS)

2x125 MVAr, 400 kV Bus reactors at Karur PS

Space provision for Phase-II:o 400/230 kV ICTs along with bays: 3 nos.

o 230 kV line bays: 5 nos.

o 230 kV bus sectionalizer bays: 2 nos.

Adequate space provision for future expansion for: o 400/230 kV ICTs along with bays: 3 nos.

o 400 kV line bays: 6 nos.

o 230 kV line bays: 7 nos

The schedule of implementation would be matching with schedule of RE developers or 18months from the date of transfer of SPV, whichever is later.

Transmission Scheme for Evacuation of power from RE sources in Karur/ TiruppurWind Energy Zone (Tamil Nadu) (1500MW) under Phase-II :

Augmentation of 3x500 MVA, 400/230 kV at Karur PS

5 Nos. of 230 kV line bays at Karur PS (to be implemented as part of ISTS)

Phase-II scheme to be taken up only after receipt of Connectivity/LTA applications beyond1000 MW at Karur.


17.2. Representative of TANGEDCO opined that “Transmission Scheme for Evacuation of power

from RE sources in Karur/ Tiruppur Wind Energy Zone (Tamil Nadu) (1000 MW) under

Phase-I” should be implemented with 1x500 MVA, 400/230 kV ICT at Karur PS in place of

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2x500 MVA, 400/230 kV ICT at Karur PS since LTA of only 100 MW has been granted at

Karur PS. Further he stated that during the special SRPC meeting, it has been recorded that

the proposal for phasing of transmission scheme was directly discussed in the NCT meeting

and should have been first discussed and agreed in the SRPC(TP) meeting with the

constituents.

17.3. Chief Engineer (PSPA-I), CEA, informed that phasing of the transmission scheme was

deliberated and agreed in the 4th NCT meeting and based on the recommendation of NCT,

MOP, has already issued gazette notification for the phasing of the scheme viz. 2x500 MVA

ICT in Phase-I and 3x500 MVA ICT in Phase-II.

17.4. Representative from SECI stated that all the issues pertaining to phasing of “Transmission

Scheme for Evacuation of power from RE sources in Karur/ Tiruppur Wind Energy Zone

(Tamil Nadu) (1000 MW)” were discussed in totality and agreed in the 4th NCT meeting.

17.5. Regarding interconnection of Pugalur HVDC with RE generators at Karur, CGM,

POWERGRID gave a brief presentation on the risk of commutation failure at Pugalur HVDC

due to its interconnection with nearby RE generations. The presentation is attached at Annex-

17. He stated that the following criteria needs to be met at 400 kV RE injection point for

smooth operation of HVDC at Pugalur terminal:

Harmonic limits shall be within the grid code defined limits

Voltage fluctuations shall be within the grid code defined limits

Frequency variations shall be within the grid code defined limits

Voltage unbalance shall be less than 1%

At any point, the RE connected feeder shall not be the only inter-connection to theRaigarh-Pugalur HVDC at Pugalur bus.

In future, in case any issues arises during RE integration, necessary control & protectionstudy and validation may be carried out.

17.6. Members noted.

17.7. Transmission scheme for evacuation of power from Gadag SEZ (2500 MW) - Part A:

Director (PSPA-I), CEA informed that the phasing of the scheme “Transmission scheme forevacuation of power from Gadag SEZ (2500 MW) - Part A” was discussed in the 4th NCTmeeting held on 20.01.2021 and 28.01.2021and subsequently, MoP vide Gazette notificationdated 19.07.2021, has notified Phase I of the Scheme as given below:

Transmission scheme for evacuation of 1000 MW from Gadag SEZ under Phase-I

Establishment of 400/220 kV, 2x500 MVA Gadag Pooling Station

Gadag PS - Narendra (New) PS 400 kV (high capacity equivalent to quad moose) D/CLine

400 kV line bays at Narendra (New) for Gadag PS- Narendra (New) PS 400 kV D/c line

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220 kV line bays for interconnection of solar projects (4 nos)

1x125 MVAr (400 kV) bus reactor at Gadag PS

Future provisions:o Space for 400 kV Line bay with switchable line reactor: 8 nos.

o 400/220 kV ICT along with associated bay: 4 nos.

220 kV:o Bus sectionalizer bay: 2 nos. (One no. bay for each Main Bus)

o Bus coupler bay: 2 nos.

o Transfer Bus coupler bay: 2 nos.

o Space for future 400/220kV ICT bay: 4 nos.

o Space for future line bay: 8 nos.

The schedule of implementation would be matching with schedule of RE developers or 18months from the date of transfer of SPV, whichever is later.

Transmission scheme for evacuation of 1500 MW from Gadag SEZ under Phase-II

Augmentation of 400/220 kV, 3x500 MVA Gadag Pooling Station

Gadag PS - Koppal PS 400 kV (high capacity equivalent to quad moose) D/C Line

400 kV line bays at Koppal PS for Gadag PS- Koppal PS 400 kV D/c line

220 kV line bays for interconnection of solar projects (4 nos)

The Phase I as agreed would be adequate to evacuate power of 2500 MW Gadak andKoppal. However, the additional transformer system and Gadak-Koppal 400 kV line alongwith associated bays under Phase-II scheme to be taken up only after receipt ofConnectivity/LTA applications beyond 1000 MW at Gadag or beyond 1500 MW at KoppalP.S. The schedule of implementation of Phase-II of the scheme would be matching withschedule of RE developers or 18 months from the date of transfer of SPV, whichever islater.

17.8. Members noted the same.

18. Phase-I & Phase-II Solar & Wind Energy Zone Transmission Schemes

18.1. Transmission scheme for integration and evacuation of 18.5 GW REZ was discussed and

agreed in the 1st SRSCT meeting held on 07.09.2018 and 2nd SRSCT meeting held on

10.06.2019. Further, various issues related to availability of land, bidding, identification of

potential and All-India Studies were raised by TANGEDGO in various forums including

proceedings before CERC in the petition no. 200/MP/2019, which were deliberated in the 1st

SRPC(TP) meeting held on 16.12.2019. Status of availability of land, bidding and

applications in various REZ were further informed in the 2nd SRPC(TP) meeting held on

01.10.2020, however, due to paucity of time, the agenda could not be discussed completely

and it was decided that same may be taken up in the next SRPC(TP) meeting.

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18.2. The transmission system discussed and agreed for 18.5 GW potential RE Zone in SR is given

below:

a) Tirunelveli and Tuticorin Wind Energy Zone (Tamil Nadu) (500 MW)

b) Karur / Tiruppur Wind Energy Zone (Tamil Nadu) (2500 MW)

c) Koppal Renewable Energy Zone (Karnataka) (2500 MW)

d) Kurnool Wind Energy Zone (3000 MW) /Solar Energy Zone (AP) (1500 MW)

e) Ananthpuram (Ananthapur) SEZ (AP) (2500 MW) and Kurnool SEZ (AP) (1000 MW)

f) Gadag SEZ (Karnataka) (2500 MW)

g) Bidar SEZ (Karnataka) (2500 MW)

h) Common transmission system strengthening in Southern Region for enablingevacuation and export of power from Solar & Wind Energy Zones in Southern Region

18.3. As per discussions in 2nd SRSCT meeting, the above transmission system is a broad master

plan to serve integration of RE generation potential assessed in Tamil Nadu, Karnataka and

Andhra Pradesh for period upto 2021-22. As such, it was agreed that the scheme would be

implemented as ISTS, consequent to grant of LTA by CTU. The transformation capacity at

various sub-stations and certain elements may be required to be reviewed based on LTA

applications. Accordingly, this broad master plan would be implemented in stages to serve

RE integration.

18.4. As per information furnished by SECI, status of land availability for setting up of RE

generation projects (18.5 GW) in Southern Region is detailed below:

Land is available in Gadag (2500 MW SEZ) and Koppal (2500 MW WEZ) andGovernment of Karnataka has already identified the land. However, Koppal wasoriginally envisaged as Wind Energy Zone but SECI has now proposed to developKoppal as a SEZ/Hybrid.

Regarding Bidar (2500 MW SEZ), Karnataka, land is yet to be firmed up.

Land is available in Ananthpuram (2,500 MW SEZ) and Kurnool (2,500 MW SEZ,3,000 MW WEZ) Andhra Pradesh.

Regarding Karur WEZ (2,500 MW), Tamil Nadu Government has raised specificconcerns about the availability of land for the identified potential of 2500 MW.Regarding Tirunelveli WEZ (500 MW), Tamil Nadu Government has not confirmed theavailability of land.

18.5. Further, the following were also decided in the 1st SRPC(TP) meeting:

i. SECI would share the RE potential assessment study/report for 18.5 GW of envisagedRE potential in states of Andhra Pradesh, Karnataka and Tamil Nadu with CEA/CTU/SRPC and with STU’s of SR.

ii. SRPC would co-ordinate with states to find out the RE potential already developed

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and the balance RE potential which could be developed in different locations(connected to ISTS as well as intra-state network), based on availability of land andother infrastructure within two months and forward their findings to CEA.

iii. SECI/MNRE to confirm whether the assessed RE potential at different locations inSouthern Region includes the potential being developed in intra-state system orexcludes the same. For example, whether the RE potential (2.5 GW) at Koppal,Karnataka, is the total potential of Koppal area and includes the RE potential (of about1 GW) being developed by KPTCL in Koppal or is over and above the potential beingdeveloped by KPTCL.

iv. SECI was requested to expedite the bidding process of planned RE capacity inSouthern region so as to avoid mismatch between commissioning of RE capacity andassociated transmission system.

v. Accordingly, CEA/CTU may review the transmission plans/schemes based on theabove.

18.6. SECI along with NIWE, made a presentation on assessment of 18.5 GW RE Potential in

states of Andhra Pradesh, Karnataka and Tamil Nadu at TNEB Headquarters Chennai

on 11th February 2020.The meeting was attended by SR constituents.

18.7. In the 2nd SRPC(TP) meeting, Director (PSPA-I), CEA, stated that out of 18.5 GW of RE

potential, land availability corresponding to 5.5 GW of RE (Karur - 2.5 GW, Tirunelveli – 0.5

GW and Bidar – 2.5 GW) is yet to be finalized. Chief Engineer (PSPA-I), CEA, requested

SECI to furnish the details of land availability in Koppal, Gadag, Kurnool and

Ananthapuram. Towards this, representative of SECI stated that land has been finalized by

A.P. government for setting up RE generation projects in Ananthpuram and Kurnool and the

same will be formalized within two months. He also informed that SECI has invited bidders

to set up solar park of 2,500 MW capacity in Koppal. He further clarified that SECI has not

identified Koppal as SEZ only, Koppal may be developed as a hybrid zone and has the

potential for both solar and wind power. Regarding Gadag, land is available corresponding to

2,100 MW of solar power.

18.8. Representative from TANGEDCO stated that as per the directions of CERC, SECI has been

asked to file an affidavit for the following for each RE location in Southern Region:

Firm availability of land.

Status of bidding.

Status of LTA application.

Whether RE power can be evacuated through existing transmission system or augmentation is required.

Whether the proposed transmission network for evacuation of RE power can be taken up independently and in phased manner

Subsequently, SECI has filed an affidavit informing that land is available in Koppal todevelop 2.5 GW of solar park. However, as per TANGEDCO, SECI, has not provided any

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document related to land availability. Therefore, TANGEDCO requested to defer thescheme till land availability issue is resolved.

18.9. During the 2nd SRPC(TP) meeting, SECI representative informed that SECI has submitted all

the documents in respect of land availability which has been made available either by

Karnataka Government or A.P Government.

18.10.CTUIL has submitted affidavit dated 26.08.2020 in compliance of CERC directions issued

vide ROP dated 06.08.2020 regarding prioritization of transmissions schemes. CTU vide

referred affidavit submitted that transmission scheme for Koppal and Gadag may be taken up

for implementation on priority. In addition, regulatory approval sought for Tuticorin may be

given which shall be implemented after receipt of LTA for more than 1500 MW. Further

implementation of Kurnool & Ananthapur to be taken-up after issuance of location specific

bids by SECI (presently to be put on hold due to non-availability of LTA applications).

Karur, Bidar and Common transmission scheme to be put on hold.

18.11.Subsequently, as per the meeting held in CEA on 12.10.2020 regarding development of

Common Transmission System for Connectivity, meeting held on 16.10.2020 for review of

66.5 GW RE linked Transmission schemes and 12th meeting of the Monitoring Committee on

Inter-State Transmission System (ISTS) for 66.5 GW REZs held on 22.10.2020, it was

decided that the transmission system for evacuation of power from RE sources in Bidar,

Karur, Kurnool & Anantapur area may be put-on hold due to non-availability of land.

18.12.CTU has granted/ received Stage-I / Stage-II Connectivity for 300 MW at Karur PS and LTA

for 100 MW. Accordingly, implementation of Karur PS was also recommended in phased

manner vide additional affidavit dated 29.04.21.


18.13.CTUIL informed that the details of Connectivity & LTA applications received for Koppal,

Gadag, Karur & Tinunelveli/Tuticorin PS are as given below:

REZSt-II Connectivity (MW) LTA (MW)Granted Addl. agreed

for grantGranted

(beneficiaries)Addl. agreed for

grant

Koppal 600 600300 (NR-100, WR-

100, ER-100)300 (NR-150, WR-

75, ER-75)

Gadag 160 300 0460 (NR-150, WR-

235, ER-75)Karur 270 150 100 (NR-100) -Tirunelveli / Tuticorin

2220.1 - 1640.1** -

** LTA of 540 MW has been granted for which 4th ICT at Tuticorin-II shall be required.

18.14.As per CERC directions in the Regulatory Approval petition 200/MP/2019, vide affidavit

dated 29.04.21, CTUIL has submitted the land details of the generation projects as received

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from RE developers at Koppal, Gadag and Karur. SECI had also submitted land-related

details of respective State Governments vide Affidavit dated 25.08.2020.

18.15.Further, in RoP dated 25.06.2021, CERC had directed to hold SRPC meeting to discuss the

developments and implementation of the transmission schemes in phase-wise manner with

the constituents of the Southern Region and to file the minutes of meeting. Further, the

Commission also directed the Petitioner and SECI to furnish the available details regarding

acquisition of land by the RE developers in the States of Tamil Nadu and Karnataka.

18.16.CTUIL informed that a special SRPC meeting was held on 14.07.2021 with the SR

constituents as per the direction issued by CERC, wherein phase-wise implementation of the

transmission schemes was discussed in detail and approval of SRPC for implementation of

transmission system in phased manner was requested for Koppal, Gadag, Karur & Tuticorin

REZ, wherein the LTA has already been granted so that regulatory approval may be given by

CERC thereby avoiding mismatch in generation and associated transmission system. He

further informed that based on the submissions made by SR constituents in the special SRPC

meeting, following was agreed:

(i) Revised study needed to be carried out by CTUIL in consultation with CEA based on

the 2022-23 scenario as well as considering the transmission system planned by

STUs.

(ii) Based on the study carried out, CTUIL may place fresh proposal for the requirement

of transmission network before Southern Regional Power Committee (Transmission

Planning) i.e. SRPC (TP) for deliberation/finalisation.

(iii) Impact on the transmission charges of the States due to the implementation of

transmission schemes for integration/evacuation of the REZ would be apprised to the

States by CTUIL.

(iv)The transmission scheme for integration of REZ as finalized by SRPC (TP) based on

the revised study, would be implemented in phased manner strictly based on the LTA

granted.

Minutes of the special SRPC meeting held on 14.07.2021 is attached at Annex-18.1.

18.17.Sr. DGM (CTUIL) stated that based on the decision in the special SRPC meeting, CTUIL had

carried out detailed studies for integration of 8 GW of REZ in Koppal, Gadag, Karur &

Tuticorin. A detailed presentation was given by CTUIL in this regard. Copy of presentation

made by CTUIL is attached at Annex-18.2.

18.18. It was informed by CTUIL that system studies were carried out with the integration of total

identified potential at the above REZ’s for high RE scenario i.e., June 2023-24 Solar Max

scenario by which time the identified schemes are expected to get commissioned. From the

system studies, no transmission constraints have been observed with the already planned

transmission system for integration of Koppal, Gadag, Karur & Tuticorin REZ. Line loading

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are found to be generally in order. Further, in the absence of land and LTA applications in

Kurnool, Ananthapur and Bidar REZ, a reduction in net generation of Southern Region of the

order of 10 GW has reduced the export from Southern Region to other regions. Accordingly,

the requirement of upgradation of transmission corridor of Tuticorin-Salem, Salem-

Madhugiri, Madhugiri-Narendra under “Common Transmission System Strengthening in

Southern Region for export of power from Solar & Wind Energy Zone in Southern Region”

as well as upgradation of Narendra-Kolhapur transmission line under “Transmission scheme

for evacuation of 2500 MW from Gadag SEZ – Part B” to its rated voltage is not envisaged

and may be deferred till the receipt of LTA applications at Kurnool, Ananthapur and Bidar

REZ. Further, to address overloading beyond Kolhapur, Kolhapur – Kolhapur (PG) 400 kV

D/c line has been agreed for reconductoring with twin HTLS in the 3rd WRPC(TP) meeting

held on 14.06.2021 as regional system strengthening scheme. The same shall be required for

evacuation of surplus power from generation projects in above prioritized REZ. In addition,

deliberations are going on in Western Region for identification of additional strengthening

beyond Kolhapur for export of surplus power from SR under high RE generation scenario.

18.19.Representative from KPTCL & TANGEDCO enquired about the dispatches considered at

prioritized REZ and whether the nature of generation i.e. Solar, wind & hybrid REZ has been

considered in the studies. Towards this, CTU stated that the transmission system has been

planned for evacuation of power commensurate to the LTA at these REZ. It has been

observed that RE developers install generation more than the LTA quantum so as to honour

the provisions of PPA for supply of LTA quantum to the identified beneficiary. Accordingly,

full potential of 2.5 GW has been considered in the studies each for Koppal, Gadag and Karur

REZ and 0.5 GW at Tuticorin REZ. It was requested that CTUIL may share the study files

with constituents for their analysis. CTU agreed for the same.

18.20.Accordingly, the following transmission system was proposed to be taken-up for

implementation as given below:

a) Transmission Scheme for Evacuation of power from RE sources in Karur/Tiruppur Wind Energy Zone (Tamil Nadu) (2500 MW) – with phasing asdiscussed in para 17.1.

b) Transmission scheme for evacuation of power from Gadag SEZ (2500 MW) -Part A- with phasing as discussed in para 17.7.

c) Transmission scheme for Evacuation of power from RE sources in Koppal REZ(Karnataka) (2500MW)

18.21.Representative of SECI informed that out of 1200 MW Stage-II connectivity granted at

Koppal P.S., LTA for 600 MW has already been granted. Discussions for PSA signing with

Rajasthan for additional 600 MW was expected to be concluded shortly and LTA application

for the same shall be submitted to CTU shortly. Further, several location (Koppal) specific

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bids are in pipeline and it is expected that conclusion of these bids would result in LTA of

more than 1500 MW at Koppal P.S. Accordingly, the bidding may be carried out for

Transmission Scheme for evacuation of total identified potential of 2500 MW for Koppal

REZ instead of phasing the scheme.

18.22.CEA informed that based on the directions of MoP, implementation of Koppal PS along with

some other issues had been discussed in a meeting held on 11.08.2021 (MoM at Annex-18.3)

between CEA, CTUIL, MNRE & SECI. In the meeting, it had been agreed that the

Transmission Scheme for evacuation of 2500 MW power from Koppal REZ would be

implemented with establishment of 5x500 MVA, 400/220 kV Koppal P.S. However, the

commissioning schedule would be staggered with time gap of six months i.e, commissioning

schedule of 18 months for 3x500 MVA, 400/220 kV ICTs and commissioning schedule of 24

months for balance 2x500 MVA, 400/220 kV ICTs. It was also decided in the meeting held

on 11.08.2021 that to facilitate the Regulatory Approval of the scheme, SECI would file

affidavit in CERC, justifying the implementation of complete transmission Scheme at at

Koppal REZ (2500 MW), instead of phasing the scheme. Accordingly, the commissioning

schedule of Koppal REZ (2500 MW) would be as given below:

Commissioning schedule of 18 months

Establishment of 3x500 MVA, 400/220 kV pooling station near Munirabad /suitable location in Koppal distt.

Pooling station (near Munirabad /suitable location in Koppal distt.) - Narendra (New) GIS 400 kV D/c Line (with Quad Moose ACSR conductor)

400 kV GIS line bays at Narendra (new) for Koppal PS- Narendra (New) GIS PS 400 kV D/c line

5 Nos of 220 kV line bays for interconnection of wind projects

2x125 MVAr, 400 kV bus reactor at Pooling station (near Munirabad /suitable location in Koppal Distt.)

Space provision for additional future expansiono Space for future 400 kV line bay with switchable line reactor: 6 nos.

o Space for future 400/220 kV ICT along with associated bay: 3 nos.

o Space for future 220 kV line bay: 7 nos.

Commissioning schedule of 24 months

Augmentation of 2x500 MVA, 400/220 kV ICTs at pooling station near Munirabad /suitable location in Koppal distt.

4 Nos of 220 kV line bays for interconnection of wind projects

18.23.Representative of SECI further stated that as per the submission made by constituents and

discussions in various meetings, SECI has already included location specific tenders for

Koppal, Gadag, Karur and Tuticorin. It is expected that LTA applications shall be applied by

RE developers for entire identified potential of 8 GW in these pockets within 2-3 months.

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However, transmission scheme for Kurnool, Anantapur and Bidar shall also be required once

location specific tenders are invited for these REZ.

18.24.Sr. DGM (CTUIL) informed that Narendra (New) sub-station is Gas Insulated Sub-station

(GIS). Hence, the 400 kV bays at Narendra (New) GIS for termination of Gadag PS -

Narendra (New) GIS PS 400 kV (high capacity equivalent to quad moose) D/C Line, and

Pooling station (near Munirabad /suitable location in Koppal distt.) - Narendra (New) GIS

400 kV D/c Line (with Quad Moose ACSR conductor) would be GIS bays.

18.25.Representative from NTPC stated that the developers have to implement the generation

within 18 months from signing of PPA/PSA. However, delay in implementation of the

transmission system may lead to bottling-up of RE power. Member (Power System), CEA,

stated that transmission system implementation has its own timeline and approval cycle. The

delay in implementation of transmission system is solely attributable to the lack of LTA

applications from RE developers. He requested SECI to ensure the submission of LTA

applications by RE developers well in time so as to facilitate timely implementation of the

associated transmission scheme.

18.26. Members agreed for the proposed transmission system for 8 GW REZ in Koppal (2.5 GW),

Gadag (2.5 GW), Karur (2.5 GW) and Tuticorin (0.5 GW) in Southern Region.

19. All-India studies for evolution of additional transmission scheme for export of powerfrom Southern grid to rest of all-India grid

19.1. In the 2nd SRSCT meeting, it was decided that all-India studies would be carried out with the

participation of CEA, CTU, POSOCO and concerned beneficiaries/STUs for evolution of

additional (over and above the above proposed transmission scheme) transmission scheme for

export of power from Southern grid to rest of all-India grid.

19.2. Accordingly, Load-Generation balance was prepared by CEA and CTU to carry out system

studies for integration of 175 GW RE by the year 2022 and the load generation balance along

with PSSE file for one scenario (August 2021-22 Afternoon Peak) had been circulated to SR

constituents and POSOCO on 19.11.2019. The same was also discussed with the SR

constituents and POSOCO in the joint study meeting on 21-22 November, 2019, at New

Delhi and subsequently in the 1st SRPC(TP) meeting held on 16.12.2019 at Hyderabad.

19.3. In the 1st SRPC(TP) meeting, it was decided to prepare total nine scenarios for the month of

June, 2021, August, 2021 and February, 2022, for afternoon peak, evening peak and night

offpeak scenarios (three scenarios for each month viz. June, August and February). It was

further decided that the same shall be circulated to SR constituents for their comments

/observations/suggestions. Further, SR Constituents were again requested to forward their

comments/observations on the already circulated Load-Generation balance and PSSE file, so

that the nine number of scenarios could be formulated.

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19.4. In view of the above, LGB for 9 nos. of scenarios and system studies file for one scenario

(June 2021-22 Afternoon Peak) was prepared. Load generation scenarios, results of the

system studies, study assumptions & inputs considered were uploaded on CTU website and

were also circulated to all the regional constituents for their comments/observations vide

emails dated 20.05.2020 (SR), 08.06.2020 (WR) and 11.06.2020 (NR, ER & NER).

19.5. Comments were received from POSOCO vide letter dated 25.06.2020. Further, observations

pertaining to certain transmission network data updation of STU network and generation

dispatches were also received from TANTRANSCO vide email dated 02.06.2020 and

KPTCL vide email dated 08.06.2020. KPTCL has stated that the 9 nos. of load generation

balance scenarios and assumptions considered for study pertaining to Karnataka is in line

with the historical pattern. No comments were received from any other constituents.

Accordingly, the system studies file was updated incorporating the above observations of the

constituents and system studies were carried out for all the 9 nos. of scenarios. The system

studies along with observations received from POSOCO/constituents were also discussed

with CEA and POSOCO in meeting held on 23.07.2020.

19.6. The Load generation scenarios, study assumptions & inputs considered, system studies and

the detailed study analysis was uploaded on CTU website on 03.08.2020 and the same was

also circulated to constituents for their comments and observations. Comments were received

from POSOCO vide letter dated 30.09.2020, TSTRANSCO vide letter dated 29.09.2020 and

TANTRANSCO vide letter dated 11.03.2021. Comments from POSOCO were discussed in

the meeting held on 11.03.2021 for Load Generation Balance for All India Studies for 2024-

25 which are being done as a continuation of the All-India Studies of 2021-22 with the

integration of additional identified potential in NR & WR (20 GW in Rajasthan & 15 GW in

Khavda).

19.7. POSOCO vide letter dated 30.09.2020 has submitted observations on the All-India Studies

for RE integration in 2021-22 which were discussed in detail in the meeting. POSOCO has

raised observations regarding similarity between off-peak demand and afternoon peak and

maximum demand for all- India being considered on higher side. It was also reported that

demand in WR for afternoon should be more than evening scenario. During the meeting,

CTU informed that load demand and generation dispatches considered in the 2021-22 studies

were as per the CEA report dated 30.01.2020 and as decided in the meeting of CEA, CTU &

POSOCO held on 23.07.2020.

19.8. It was informed that net afternoon peak demand figures were arrived at after reduction of

dispatch from roof-top solar from regional demands. So the afternoon demand appears to be

on lower side. POSOCO has also raised observations on the generation dispatches considered

in the studies. Various transmission element overloading and voltage violations within a

region were also highlighted. Observations of POSOCO have been duly considered and

accordingly the generation dispatches have been appropriately revised in the 2024-25

LGB/scenarios. Further, the electricity demand considered may be reviewed based on the

60


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receipt of revised load factors from POSOCO. It was also informed that All-India Studies for

2021-22 were primarily focused on the sufficiency of IR links in various scenarios and

highlight the major issues likely to be faced on account of integration of huge quantum of RE

in the Grid. However, the observations raised by POSOCO on various power flow/voltage

violations have been duly noted and same shall be considered in detail in 2024-25 system

studies.

19.9. Based on the observations received from constituents, nine no of scenarios for all India files

(2024-25 timeframe) were created as per LGB deliberated in meeting held on 11.03.21

among CTU, POSOCO & CEA. As per the deliberations held in the meeting and subsequent

comments received from POSOCO, LGB and system studies were revised and from the

system studies, the IR flows across the regions for the time-frame of 2024-25 are given

below:

ScenarioNo

1 2 3 4 5 6 7 8 9

IR Flows Aug'24 Jun'24 Feb'25

CorridorSolarMax

PeakLoad

OffPeak

SolarMax

PeakLoad

OffPeak

SolarMax

PeakLoad

OffPeak

WR-NR 404 18996 18177 -1149 23596 17821 -17924 7949 1655ER-NR -12753 -5182 -3412 -10810 -1055 -1421 -7785 4 -468ER-WR -5727 -5619 -5415 -5666 -5870 -5229 -1991 -2197 -1214ER-SR 1870 872 1034 2699 1672 1902 5567 4504 5047WR-SR -4572 -9017 -8339 -2208 -7162 -6821 7564 4392 5984NER-ER -1701 -1547 -1459 -1476 -1168 -1161 -2154 -1749 -1838

Assumptions considered, LGB, generation dispatched considered and flow patterns betweendifferent regions are attached at Annex-19.

19.10.From the study results, primarily it has been observed that constraints are likely to be faced in

case of export of surplus RE power from Southern Region which shall enhance to the

quantum of about 9000 MW in 2024-25 time frame. System studies indicate that the

following transmission elements become ‘n-1’ non-compliant after Upgradation/charging of

Narendra New - Kolhapur (PG) 765 kV D/c line (initially charged at 400 kV) to its rated

voltage of 765 kV:

Kolhapur (PG) – Kolhapur (MSETCL) 400kV D/c line

Kolhapur(MSETCL) – Karad (MSETCL) 400kV D/c line

19.11. Issue of transmission constraints beyond Kolhapur in case of export of power from SR to WR

were also highlighted in the all-India Studies for integration of RE in 2021-22 wherein export

of the order of 5000 MW was expected in high RE scenario from SR to WR. It was also

brought out that the following transmission system shall be required in order to enable export

of surplus power from SR to WR:

Kolhapur(PG) - Pune (GIS) 765kV D/c line

Reconductoring of Kolhapur (PG) - Kolhapur(MSETCL) 400kV D/c line with

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conductor having minimum capacity of 2100MVA per circuit at nominal voltage

Augmentation of Narendra (New) by 1x1500 MVA, 765/400 kV ICTs

19.12.Further, in the 3rd meeting of NCT held on 20th & 28th January, 2021, it was agreed that

Strengthening of Kolhapur (PG) - Kolhapur (MSETCL) 400 kV section may be taken in

RPC(TP) based on the operational constraint reported by POSOCO. Subsequently, POSOCO

vide letter dated 02.02.2021 has intimated that during December, 20 – January,21 period,

power flow in the Kolhapur (PG) - Kolhapur(MSETCL) 400 kV D/c line has been observed

very high with ‘n-1’ non-compliance. NLDC and RLDCs are taking various measures in

operations such as reduction in power order of HVDCs toward southern region (Talcher –

Kolar, Bhadravati, Raigarh – Pugalur) to relive the loading of Kolhapur (PG) – Kolhapur

(MSETCL) 400 kV D/c line. The issue shall be aggravated with the injection of power at

Narendra (New), from the identified REZ potential in Koppal and Gadag together with

generation from Kudgi TPS.

19.13.Transmission system requirement for export of power from Southern Region to Western

Region has been deliberated with WR constituents in the 3rd WRPC(TP) meeting wherein the

following was agreed:

Re-conductoring of Kolhapur (PG) – Kolhapur 400 kV D/c line with conductor ofminimum capacity of 2100 MVA/Ckt at nominal voltage along with bay upgradationwork at Kolhapur (MSETCL).

The strengthening requirement beyond Kolhapur other than re-conductoring ofKolhapur (PG) – Kolhapur 400 kV D/c line would be studied in separate joint studymeeting with CEA, CTU, WRPC & POSOCO.

19.14. Due to paucity of time this agenda could not be discussed and the same would be discussed

in the next SRPC(TP) meeting.

20. Assessment of online Dynamic Line Rating

20.1. As per the directions of CERC regarding implementation of assessment of Dynamic Line

Loadings in real time / day ahead for optimal utilization of transmission lines, the matter was

discussed in 37th SRPC and 167th OCC meetings held on 01.02.2020 and 13.03.2020

respectively. In the OCC meeting it was decided that SRPC may take up the matter with

POSOCO/CTU to have a pilot project on any critical line in Southern Region. Member

Secretary, SRPC vide letter dated 16.03.2020 had requested to have a pilot project on any

critical line in Southern Region. KSEB has proposed installation of the system for dynamic

loadings on Udumalpet–Palakad 400 kV D/c line.

20.2. In view of above, Udumalpet – Palakad 400 kV D/c line (line length 95 km.), Tuticorin PS –

Madurai 400 kV D/c (quad) line (line length 95 km), N. P. Kunta – Kolar 400 kV S/c line

(line length 130 km) or any other transmission line may also be considered as potential

62


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candidate for the pilot project. In the 2nd SRPC(TP) meeting, a presentation was made on the

basics of Dynamic Line Rating. Due to paucity of time, the matter could not be discussed in

detail and it was decided that the matter would be discussed in next SRPC(TP) meeting.


20.3. CGM, SRLDC, informed that with commissioning of Pugalur-Trichur 2000 MW VSC based

HVDC system, the loading on Udumalpet – Palakad 400 kV D/c line has been reduced

significantly. Further, with suitable bypassing arrangement at NP Kunta S/s and

reconductoring of N. P. Kunta – Kolar 400 kV S/c line, the loading on N. P. Kunta – Kolar

400 kV S/c line has also been reduced. These lines may not be considered for assessment of

Dynamic Line Loading as a pilot project. He suggested to consider the following lines for

assessment of Dynamic Line Loadings:

Kalapaka – Simhadri 400 kV D/c line (line length 4 km)

Nellore PS – Thiruvalam 400 kV D/c line (line length 179 km)

i. CTU informed that loading on Tuticorin PS – Madurai 400 kV D/c (quad) line has

also reached about 1300 MW on each circuit and for pilot project short line may be

considered instead of long lines. Accordingly, Tuticorin PS – Madurai 400 kV D/c

(quad) line (line length 95 km) may be considered as one of the potential candidate.

20.4. After deliberations, members agreed to consider the following lines for assessment of

Dynamic Line Loadings as a pilot project and SRPC was requested to take further action on

the issue:

ii. Tuticorin PS – Madurai 400 kV D/c (quad) line (line length 95 km)

iii. Kalpakka – Simhadri 400 kV D/c line (line length 4 km)

C. ToR 2(iii) – APPLICATIONS FOR CONNECTIVITY AND ACCESS

21. Connectivity Transmission system agreed after 2nd SRPC(TP) meeting in various

Connectivity/LTA meetings of Southern Region

21.1. CTU informed that following dedicated transmission system was agreed for grant of Stage-II

connectivity in various Connectivity/LTA meetings of Southern Region held after 2nd

SRPC(TP):

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Sl.No.

Application No.

Applicant Location Stage-IIConnectivity (MW)

Start Dateof Stage-II

connectivity

Location forgrant ofStage-II

Connectivity


System

46th Conn/LTA meeting held on 28.09.2020

64


1069


Sl.No.

Application No.



connectivity


Connectivity


System

1 1200002672

GreenkoAP01 IREPPvt Ltd

BrahmanPalle,Kurnool,AP

900 04-Feb-22Kurnool(New)

Greenko AP01 IREPPvt. Ltd. – KurnoolNew 400kV S/c linestrung on D/c towers(with high capacityconductor enabling atleast 900 MW powertransfer at nominalvoltage like QuadMoose conductor etc.)along with line bay atgeneration end underthe scope of applicantand one bay atKurnool New S/sunder the scope ofISTS.


21200002868

JSW RenewEnergy Ltd.

Tiruppur,Tamil Nadu

310(reduced to270 MW in

55th

meeting)

31-Oct-22 oravailabilityof commontransmissionsystem forConnectivity, whicheveris later

Karur (PS)

JSW Renew EnergyLtd – Karur PS230kV S/c line (withequivalent conductorenabling at least 310MW power transfer atnominal voltage)

31200002869

JSW RenewEnergy Ltd.

Tuticorin,Tamil Nadu

500 31-Oct-22Tuticorin-IIGIS

JSW Renew EnergyLtd – Tuticorin-II230kV D/c line withbay at generator endunder the scope ofapplicant and bays atISTS end under thescope of ISTSlicensee

41200002872

VenaEnergyVidyuth PvtLtd

Koppal,Karnataka

160

31-May-22oravailabilityof commontransmissionsystem forConnectivity, whicheveris later

Gadag PSVena Energy VidyuthPvt Ltd – Gadag PS220kV S/c line

51st Conn/LTA meeting held on 26.02.2021

51200003011

BoreasRenewableEnergy PvtLtd

Nimbalagiri,Bellary,Karnataka

175 01.04.2022 Hiriyur

Boreas RenewableEnergy Pvt Ltd –Hiriyur 220kV S/cline along with baysat both ends under thescope of applicant

65


1070


Sl.No.

Application No.



connectivity


Connectivity


System

52nd Conn/LTA meeting held on 31.03.2021

61200003076

VientoRenewablesPvt Ltd

Thoothukudi, TamilNadu

79.80 15.03.2022 Tuticorin-II

Through dedicatedline of GRT Jewellers(India) Pvt LtdGRT – Tuticorin-II230kV S/c line

53rd Conn/LTA meeting held on 28.04.2021

71200003181

AyanaRenewablePower SixPvt Ltd

Gadag,Karnataka

300 01.08.2022 Koppal PS

Ayana RenewablePower Six Pvt Ltd –Koppal 220kV S/cline along with 220kVbay at generation endunder the scope ofapplicant and bay atKoppal PS under thescope of ISTS


81200003212

JSW FutureEnergy Ltd

Tiruppur,Dindigul,Tamil Nadu

150 31.10.2022 Karur PS

JSW Future EnergyLtd – Karur 230kV S/c line along with230kV bay atgeneration end underthe scope of applicantand bay at Karur PSunder the scope ofISTS

91200003214

JSW FutureEnergy Ltd

Tuticorin,Tamil Nadu

300 31.10.2022 Tuticorin-IIJSW Future EnergyLtd – Tuticorin-II230kV S/c line

101200003221

AdaniRenewableEnergyHoldingFifteen Ltd

Gadag, Karnataka

300 30.12.2022 Koppal PS

Adani RenewableEnergy HoldingFifteen Ltd - Koppal220kV S/c line alongwith 220kV bay atgeneration end underthe scope of applicantand bay at Koppal PSunder the scope ofISTS

111200003242

Renew SolarPower PvtLtd

Gadag,Bagalkote,Koppal,Karnataka

300 31.10.2022 Gadag PS

Renew Solar PowerPvt Ltd – Gadag PS220kV S/c line alongwith 220kV bay atgeneration end underthe scope of applicantand bay at Koppal PSunder the scope ofISTS.

66


1071


Sl.No.

Application No.



connectivity


Connectivity


System


121200003254

Renew SolarPower PvtLtd

Gadag,Bagalkote,Koppal,Karnataka

300 31.12.2022 Koppal PS

Renew Solar PowerPvt Ltd – Koppal PS220kV S/c line on D/ctower along with220kV bay atgeneration end underthe scope of applicantand 220kV bay atKoppal PS under thescope of ISTS


131200003300

ZenatarisRenewableEnergy PvtLtd

Nimbalagiri,Bellary,Karnataka

125 30.07.2022 Hiriyur

Through sharing ofdedicatedtransmission line ofM/s BoreasRenewable EnergyPvt Ltd (BREPL) i.e.Boreas RenewableEnergy Pvt Ltd –Hiriyur 220kV S/cline along with baysat both ends under thescope of M/s BREPL

21.2. Further, following Connectivity application of NTPC for proposed solar plants at

Kayamkulam within premises of the existing NTPC Kayamkulam plant was agreed for grant

in 49th Conn/LTA meeting held on 29.12.2020:

Sl.No.

Application No.

Applicant Location ConnectivitySought(MW)

Date ofconnectivit

yapplication

Nature ofapplicant

TransmissionSystem

1 1200002927

NTPC LtdAllappuzha,Kerala

92 18-Nov-20

SolarGenerator (At NTPCKayamkulamgenerationswitchyard)

Through busextension of NTPCKayamkulam plant

21.3. Following LTA applications were agreed for grant in various Connectivity/LTA meetings of

Southern Region:

Sl.No.

ApplicationNo.

Applicant Location ofRE generation

LTAquantum

(MW)

Beneficiaries (MW) Date ofstart of

LTA


67


1072


1 1200002956JSW Renew Energy Ltd

Karur100 (NR target) 01-Jun-22

2 1200002993Renew Surya Ojas Pvt Ltd

Koppal

300NR: 100 MW,

WR: 100 MW & ER: 100 MW

01-Oct-22

3 1200002950GRT Jewellers (India) Pvt Ltd

Tuticorin150

NBPDCL &SBPDCL

15-Dec-21


4 1200003267ReNew Solar Power Private Limited

Koppal300

ER: 75 MW, NR:150 MW

WR: 75 MW(Target)

31.12.2022

5 1200003268ReNew Solar Power Private Limited

Gadag 300

ER: 75 MW, NR:150 MW

WR: 75 MW(Target)

31.12.2022

61200003276

Vena Energy Vidyuth Private Limited

Gadag160

MPPMCL, WR31.03.202

3

21.4. Members noted the same.

D. ToR 2(iv) – REVIEW OF UPSTREAM AND DOWNSTREAM NETWORK

22. Status of Implementation of downstream network by State utilities associated with ISTS

substation of POWERGRID

22.1. Director, CEA, informed that augmentation of transformation capacity in various existing

substations as well as addition of new substations along with line bays for downstream

network are under implementation at various locations in Southern Region. For utilization of

these transformation capacities, implementation of downstream 220 kV system needs to be

done. The status of downstream system as informed by respective states in the 3rd SRPC(TP)

meeting is as follows:

Sl.No.

Name ofExisting

Substation

MVACapacit

y

Total220kV

Bays

Total Un-

utilizedbays

Remarks Deliberations in 3rd SRPC(TP)meeting

1. Tumkur (Vasantnarsapur)

3×500MVA

6 2 ConstructionofdownstreamT/L for 2Nos 220 kVbays to beexpedited byKPTCL.

220 kV D/c line Tumkur-Antrasanahalli –Commissioned.

220 kV DC line Tumkur-Madhugiri – Commissioned.

2 Nos 220 kV circuits toVasanthanarsapur industrialarea of KIADB – by March,

68


1073


Sl.No.

Name ofExisting

Substation

MVACapacit

y

Total220kV

Bays

Total Un-

utilizedbays


242. Yelahank

a2x500MVA


220 kV Yelahanka – DGPlant 2000sq mm UG cable 2runs – Commissioned

Proposal for strengthening ofBengaluru transmissionnetwork to utilize theremaining bays at Yelahankais under planning.

KPTCL informed that fullcapacity of 2x500 MVAtransformer may be utilizedthrough 220 kV Yelahanka –DG Plant 2x2000 sq mm UGcable.

3. Bidadi 2x500MVA


220 kV D/c line betweenBidadi (PG)- Bidadi(KPTCL) – Commissioned

220 kV D/c line Bidadi –Magadi – Commissioned

220 kV Bidadi – Kumbalgod– 1200 sq mm UG cable S/cline – under execution.

220 kV S/c line identified toKampagada layout – 220 kVbay with UG Cable isproposed for utilization ofconstructing 220 kV line toproposed switching station atV. Valley. Target by April,2024.

4. Hiriyur 2x315MVA


220 kV Hiriyur – Chitradurgavia Thallak to Hiriyur –Commissioned.

220 kV D/c Hiriyur –Gowribidnur-Commissioned.

220 kV Hiriyur (PGCIL) –Hiriyur (KPTCL) – underexecution, Target by Nov’21

69


1074


Sl.No.

Name ofExisting

Substation

MVACapacit

y

Total220kV

Bays

Total Un-

utilizedbays


220 kV Hiriyur (PGCIL) –Chitradurga. – underexecution, target by Nov’21

5. Hassan 2x315MVA


LILO of B4 circuit ofShimoga – Bangalore 220kVat Hassan – underexecution, target by March,2022.

6. Kolar 2x500MVA


220 kV D/c line Kolar(PG) –Kolar(KPTCL)Commissioned.

220 kV D/c line Kolar –Chintamani –Commissioned.

2 Nos 220 kV downstream T/L to Gollahalli – 220 kVGollahalli S/s along with 220kV lines were commissionedon 15.03.2021. 66 kV lineswould be commissioned bySeptember, 2021.

7. Kozhikode

2×315+

1x500MVA

4 1 ConstructionofdownstreamT/L for 1Nos 220 kVbay to beexpedited byKSEB.

KSEB is enhancing thecapacity of existing 3 nos. of220 kV feeders from 400kVKozikode (PGCIL) S/s to 220kV Areekode (KSEB) S/s bychanging from single mooseconductor to double mooseconductor. With theupgradation of existing 3 nos.of feeders, the power transfercapacity at 400 kV Kozikodesubstation would be fullyutilized. Accordingly, KSEBis not planning to constructthe 4th 220 kV feeder between400 kV Kozikode (PGCIL) S/

70


1075


Sl.No.

Name ofExisting

Substation

MVACapacit

y

Total220kV

Bays

Total Un-

utilizedbays


s to 220 kV Areekode(KSEB) S/s. The work ofupgrading the existing 220 kVfeeders is in progress and it isexpected to be commissionedby October, 2021.

E. ToR 2(v) – EXAMINE AND EVALUATE INTRA-STATE PROPOALS

Transmission planning proposals by KPTCL

23. Modifications in 220 kV transmission system proposed by KPTCL at Yalwar

(associated transmission lines of 400/220 kV Yalwar Substation.)

23.1. KPTCL had requested modifications in the associated 220 kV transmission system of

400/220 kV Yalwar S/S. This system, as agreed in the 2nd meeting of SRSCT held on

10.06.2019 is given below:

i. LILO of both circuits of existing B. Bagewadi – Lingasugur 220 kV D/C line at Yalwar.

ii. LILO of both circuits of Bijapur- Sindagi 220 kV D/C line at Yalwar sub-station.

iii. B. Bagewadi -Yalwar 220 kV D/C line.

23.2. Modifications in 220 kV transmission system proposed by KPTCL, as given below was

discussed in the 1st SRPC(TP) meeting held on 16.12.2019.

i. D/C LILO of existing B.Bagewadi – Lingasugur 220 kV DC line to the proposed

400/220 kV Yalwar sub-station.

ii. 220 kV D/C line from proposed 400/220 kV Yalawar (Shivanagi) sub-station to 220 kV

Indi substation.

iii. 220 kV multi-circuit line to the LILO point of 220 kV D/C Basavana Bagewadi-

Vijayapur line near 220 kV Nandihal switching station.

The transmission line at Sl. No. (i) was already agreed in the 2nd SRSCT meeting. Changes

have been suggested in Sl. No. (ii) and (iii).

71


1076


23.3. In the 1st SRPC(TP) meeting, Chief Engineer (PSPA-II), CEA, had stated that with the

proposed connectivity, there would be unequal loading between B. Bagewadi –Yalwar.

KPTCL representative had informed that in order to solve the problem of unequal loading,

they were planning to use series capacitors for matching the impedance of transmission lines

between B. Bagewadi –Yalwar. COO(CTU) had opined that Kudgi generating station being

nearby, use of series capacitors in the transmission line may cause the problem of sub-

synchronous resonance.

23.4. As such, it was decided in the 1st SRPC(TP) meeting that KPTCL will carry out detailed

study with the planned series capacitors and submit the study results to CEA. The matter

would be discussed in the next meeting of SRPC(TP).

23.5. In the 2nd SRPC (TP) meeting, representative of KPTCL informed that detailed survey is

being carried out to finalize the route length of the proposed LILO line (4 nos. of 220 kV

circuits) from proposed 400/220 kV Yalwar sub-station to LILO the existing 220 kV

B.Bagewadi - Lingasugur DC line. Results of the detailed technical study would be submitted

before the next SRPC(TP) meeting

23.6. KPTCL vide letter dated 17.12.2020 requested for the approval of modified 220 kV

transmission scheme of 400/220 kV Yalwar as given below:

72


1077


i. Double circuit LILO of existing B. Bagewadi - Lingasugur 220 kV D/C line to the

proposed 400/220 kV Yalwar sub-station.

ii. 220 kV D/C line from proposed 400/220 kV Yalwar (Shivanagi) sub-station to 220 kV

Indi sub-station.

iii. Double circuit LILO of 220 kV Basavana Bagewadi – Nandihal switching station line to


23.7. The revised proposal was discussed in the joint study meeting held on 04.02.2021 and after

detailed deliberation same was agreed with the recommendation to put up in the forthcoming

SRPC(TP) meeting. In view of the above, connectivity of Yalwar Substation will be as

follows:

400 kV system:

i. Gulbarga- Yalwar 400 kV D/C line (with quad moose ACSR Conductor or twin HTLS).

ii. 2 x 500 MVA, 400/220 kV ICTs at Yalwar.

iii. 2 x 125 MVAr bus reactors.

220kV connectivity:

i. Double circuit LILO of existing B. Bagewadi - Lingasugur 220 kV DC line to the


ii. 220 kV DC line from proposed 400/220 kV Yalwar (Shivanagi) sub-station to 220 kV

Indi sub-station.

73


1078


iii. Double circuit LILO of 220 kV B. Bagewadi – Nandihal switching station line to


23.8. After deliberations, members agreed to the connectivity of Yalwar S/s as given in para 23.7.

24. Establishment of 3x500 MVA, 400/220 kV Sub-station at Mylsandra (Electronic City) in

Bengaluru

24.1. The proposal for providing additional feed to 3x500 MVA, 400/220 kV substation at

Mylasandra, (Electronic City) Bengaluru and establishment of 2x500 MVA, 400/220 kV

substation at Dommasandra in Bengaluru was approved in the 2nd meeting of Southern

Region Standing Committee on Transmission (SRSCT) held on 10th June, 2019, as follows:

Additional feed for Mylasandra 400/220 kV substation:

3x500 MVA, 400/220 kV ICTs.

LILO of one circuit of Dharampuri – Somanahally 400 kV D/C (Quad) line at proposed

400/220 kV substation at Mylasandra.

Mylasandra – Dommasandra 400 kV S/C line (with quad Moose ACSR conductor).

Establishment of Dommasandra 400/220 kV substation

i. 2x500 MVA, 400/220 kV ICTs.

ii. LILO of Kolar – Somanhally 400 kV S/C line at Dommasandra 400/220 kV substation.

24.2. KPTCL vide letter dated 13.11.2020 has informed that 3x500 MVA, 400/220kV substation at

Mylsandra (Electronic city) was expected to be commissioned by December, 2020 with the

provision of 400 kV MC towers for incoming line with LILO arrangement of existing 400 kV

Kolar-Somanahalli SC Twin Moose line. However, the final arrangement of incoming lines

to 400 kV Mylsandra will be as approved in 2nd SRSCT meeting i.e.:

LILO of one circuit of Dharampuri – Somanhally 400 kV D/C (Quad) line at proposed

400/220 kV substation at Mylasandra.

Mylasandra – Dommasandra 400 kV S/C line (with quad Moose ACSR conductor).

24.3. KPTCL requested for the approval to commission 400/220 kV Mylsandra sub-station with

interim arrangement of LILO of 400 kV Kolar –Somanhalli SC Twin Moose line at

Mylasandra.

24.4. The proposal of KPTCL was discussed in the joint study meeting held on 04.02.2021 and

after detailed deliberations the proposal of LILO of Kolar-Somanhally 400 kV SC line at

Mylasandra (electronic City) S/s was agreed as an interim arrangement. KPTCL was

requested to expedite the works of Dommasandra SS and the work of balance transmission

74


1079


system and to ensure that the connectivity for Mylasandra and Dommasandra is as agreed in

2nd SRSCT meeting as reproduced below:


i. 3x500 MVA, 400/220 kV ICTs

ii. LILO of one circuit of Dharampuri – Somanhally 400 kV D/C (Quad) line at

proposed 400/220 kV substation at Mylasandra.

iii. Mylasandra – Dommasandra 400 kV S/C line (with quad Moose ACSR conductor)


i. 2x500 MVA, 400/220 kV ICTsii. LILO of Kolar – Somanhally 400 kV S/C line at 400/220 kV Dommasandra

substation.

24.5. Subsequently, KPTCL vide letter dated 29.03.2021 has proposed installation of 1x125

MVAR bus reactor at the proposed 400/220 kV Mylasandra sub-station.


24.6. KPTCL informed that 1x125 MVAr bus reactor is already installed at Mylasandra S/s and is

ready for charging. KPTCL requested approval for charging the Bus reactor.

24.7. After deliberations, the above proposal of KPTCL regarding LILO of Kolar-Somanhally 400

kV SC line at Mylasandra (electronic City) S/s was agreed as an interim arrangement.

KPTCL was requested to expedite the works of Dommasandra SS and other balance

transmission system to ensure that the connectivity for Mylasandra and Dommasandra is as

agreed in 2nd SRSCT meeting as reproduced below, including the 125 MVAr bus reactor at

Mylasandra:

75


1080



i. 3x500 MVA, 400/220 kV ICTs

ii. LILO of one circuit of Dharampuri – Somanhally 400 kV D/C (Quad) line at

proposed 400/220 kV substation at Mylasandra.

iii. Mylasandra – Dommasandra 400 kV S/C line (with quad Moose ACSR conductor)

iv. 1x125 MVAR bus reactor at 400/220 kV Mylasandra sub-station


i. 2x500 MVA, 400/220 kV ICTsii. LILO of Kolar – Somanhally 400 kV S/C line at 400/220 kV Dommasandra

substation.

25. Power Evacuation scheme for the proposed 2000 MW Sharavathy Pumped Storage

Project

25.1. Transmission scheme for evacuation of power from 2000MW Sharavathy Pumped storage

Project was discussed in the 2nd SRSCT meeting and it was decided that the proposed

transmission scheme would be discussed and finalized at a later stage, based on the status of

commissioning of Sharavathy Pumped Storage Plant.

25.2. KPTCL vide letter dated 13.11.2020 has informed that the 2000 MW Sharavathy Pumped

storage project is likely to be commissioned by December 2026.

25.3. Transmission scheme proposed for evacuation of power from 2000MW Sharavathy Pumped

storage Project is as follows:

i. Construction of 400 kV MC line with Quad Moose conductor/400 kV DC Quad

equivalent High Performance conductor from proposed Sharavathy Pumped Storage

Station to 400/220 kV Talaguppa sub-station by utilizing the existing 220 kV S1, S2

or S3, S4 corridor with 4Nos/2Nos of 400kV TBs at Talaguppa.

ii. Strengthening of 400 kV Talaguppa - proposed C.N.Halli DC Twin Moose line by

higher ampacity conductor (Twin Moose equivalent HTLS).

iii. Augmentation of existing 1x315 MVA (out of 3X315) transformers by 1x500 MVA,

400/220 kV transformers at Talaguppa.

iv. Strengthening of 220 kV Talaguppa-Sharavathy DC line by higher ampacity

conductor (Drake equivalent HTLS).

v. By utilizing the existing corridor of S1-S2 or S3-S4, replacing the S1-S2 & S3-S4 DC

lines with Drake conductor by 220 kV MC line between Sharavathy-Shimoga (S1, S2,

S3, S4) with AAAC Moose conductor.

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Proposed Connectivity:

`

25.4. The proposal was discussed in the joint study meeting held on 04.02.2021 and after

deliberations, KPTCL was requested to carry out following additional studies:

Line loading considering full generation of about 3000 MW at Sharavathy existingand Sharavathy Pumped Storage Project.

Line loading when Sharavathy Pumped Storage Project would be operating inpumping mode (during off peak load hours or during high RE generation period).

To review the ICT requirement at Talaguppa, if required. And it was decided to discuss the matter subsequently in separate meeting with KPTCL,CTU, CEA and SRLDC and the scheme would be subsequently put up in the forthcomingSRPC(TP) meeting.

25.5. Accordingly, matter was discussed in the meeting held on 19.05.2021. KPTCL carried out

study for the above scenarios and proposed following additional connectivity:

i. Establishing 400 kV Switching station at Sirsi with Double circuit LILO of 400 kV

Kaiga-Guttur DC line.

ii. Construction of 400/220 kV MC/MV Double circuit line with Quad Moose

conductor/Twin equivalent HPC from proposed Sharavathy Pumped Storage Station to

proposed 400 kV Switching station at Sirsi limits in existing 220 kV DC Sharavathy-

Sirsi line corridor.

iii. Provision for 1x125 MVAr Bus Reactor at proposed 2000 MW Sharavathy Pumped

Storage Plant.

iv. Strengthening of 400kV S/C Twin Moose line between Dhoni-Guttur by DC line with

Quad Moose conductor.

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v. Strengthening of 220 kV Talaguppa-Sharavathy DC line by higher ampacity conductor

(Drake equivalent HPC instead of HTLS).

25.6. After deliberations, KPTCL was requested to carry out the studies incorporating demand as

per 19th EPS for the year 2026-27 and come-up with other alternatives, as LILO of Kaiga –

Devangere (Guttur) 400 kV D/c line may hamper the power evacuation from Kaiga

generation project (Nuclear Generation).

25.7. Accordingly, KPTCL carried out the studies and proposed the following transmission

scheme:

i. Construction of 400 kV DC line with Quad Moose conductor/twin equivalent High

Performance conductor from proposed Sharavathy Pumped Storage Station to 400/220

kV Talaguppa sub-station by utilizing the existing 220 kV corridor in Sharavathy

complex with 2 Nos of 400 kV TBs at 400 kV Talaguppa S/S.

ii. Strengthening of 400 kV Talaguppa - proposed C.N.Halli DC Twin Moose line by

higher Performance Conductor (Twin Moose equivalent HPC).

iii. Providing additional 1x315 MVA 400/220 kV transformers at Talaguppa.

iv. Establishing 400 kV Switching station at Sirsi with Double circuit LILO of 400 kV

Kaiga-Guttur DC line with twin moose conductor.

v. Construction of 400/220 kV MC/MV Double circuit line with Quad Moose

conductor/Twin equivalent HPC from proposed Sharavathy Pumped Storage Station to

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proposed 400 kV Switching station at Sirsi limits in existing 220 kV DC Sharavathy-

Sirsi line corridor.

vi. Provision for 1x125 MVAr Bus Reactor at proposed 2000 MW Sharavathy Pumped

Storage Plant.

vii. Strengthening of 220 kV Talaguppa-Sharavathy DC line by higher ampacity conductor

(Drake equivalent HTLS).

viii. Strengthening of 220kV Sharavathy-Shimoga D/C line (S1, S2, S3, S4) by replacing

existing conductor by AAAC.

25.8. KPTCL further informed that they have carried out system studies considering following

scenario:

A. Morning Peak load (Solar Peak) with proposed 2000MW generation

B. Evening Peak load with proposed 2000MW generation.

C. Light load with high RE scenario with proposed 2000MW pump.

Load flow study results reveal that in scenario A & B, major quantum of power from the

2000MW generation from proposed PSP is evacuated to Mysore and Nelamangala via 400

kVTalaguppa & CNHalli sub-stations. The 400 kV PSP- Talaguppa DC Quad moose line and

400 kV PSP-Sirsi Switching station DC Quad moose lines are loaded to an extent of 789 MW

and 111 MW on each circuit respectively.

25.9. In light load condition (Case C), with High RE (60% generation from wind and 40%

generation from solar), pumping mode of operation has been considered at proposed 2000

MW PSP. The proposed 2000MW load of Sharavthy pumped storage plant is mainly fed

from the RE generations at Guttur and Doni downstream along with Kaiga and generation

from Sharavathy complex. The 400kV PSP- Talaguppa DC Quad moose line and 400 kV

PSP- Sirsi Switching station DC Quad moose lines are loaded to an extent of 400 MW and

601 MW each circuit respectively. The 4x315 MVA transformers at Talaguppa are loaded to

an extent of 168 MW on each transformer.

25.10.Further, for sensitivity analysis, load flow study has been conducted with full generation from

Sharavathy complex for all the scenarios. Study reveals that there are no loading violations of

the transmission system under concern in both peak and off-peak cases during normal and

contingency conditions in all the scenarios studied.


25.11.Sr. DGM (CTUIL) informed that connectivity of 1400 MW has been granted to NPCIL for

Kaiga Nuclear Power Project (Unit-5&6 of 700 MWe each). Further LTA of 1400 MW was

also granted for the generation project which was subsequently revoked. The evacuation of

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power from Kaiga generation complex requires upgradation of 400 kV Kaiga-Guttur DC line

and Kaiga – Narendra line. The proposed LILO of Kaiga – Devangere (Guttur) 400 kV D/c

line may hamper the power evacuation from Kaiga generation project (Nuclear Generation).

Further, reconductoring of 400 kV Kaiga-Guttur DC line and Kaiga – Narendra line will take

long time as these lines passes through the dense forest areas of Western ghats. Also in case

of outage of Kaiga – Narendra line, 400 kV Kaiga-Guttur DC line will not be adequate for

evacuation of power from entire Kaiga Nuclear Power Project and Sharavathy pumped

storage project.

25.12.Representative of KPTCL opined that in case of outage of Kaiga – Narendra line, the power

from Kaiga Nuclear Power Project will also flow through Talaguppa via Sharavathy PSP

besides 400 kV Kaiga-Guttur DC line.

25.13.Representative of SRLDC informed that power is also being injected at Kaiga 220 kV

switchyard from nearby hydro generation project like Kadra, Kodasalli and Nagjhari and

therefore the transmission system may not be adequate for evacuation of power from the

Kaiga complex and Shravathy PSP.

25.14.Member (Power System), CEA, opined that the proposed transmission system may not be

adequate for evacuation of power from Kaiga Nuclear Power Project and Sharavathy pumped

storage project and requires further studies.

25.15.After deliberation, it was decided that CEA, SRPC, CTUIL, SRLDC/POSOCO and KPTCL

may jointly work out the power evacuation scheme for the proposed 2000 MW Sharavathy

Pumped Storage Project. The same would be discussed in next SRPC(TP) meeting.

26. Charging of 2nd 315 MVA, 400/220/33 kV ICT at Bellary thermal Power station(BTPS)

26.1. Director, CEA, informed that KPTCL had informed that KPCL have already installed 2nd

315MVA, 400/220/33kV ICT (ICT-2) at BTPS and the same is ready for charging. Hence,

M/s KPCL has requested to arrange to give clearance for charging of ICT-2 at BTPS at the

earliest with due ratification in the forthcoming meeting of SRPC(TP).

26.2. The issue was discussed in the meeting held on 19.05.2021 and it was noted that there was

lack of coordination in planning between KPCL and KPTCL as far as ICT-2 at BTPS was

concerned and it was advised to avoid such instances in future and to put up the proposals for

discussion/approval in Standing Committee meeting/RPC(TP) meetings in advance.

26.3. In the meeting, KPCL informed that commissioning of ICT-2 would facilitate the evacuation

of power to 220 kV level and would also provide reliability to the system. After deliberations,

the proposal of charging of 2nd 315MVA, 400/220/33kV ICT at Bellary Thermal Power

Station (BTPS) was agreed. It was also decided that the same would be put up in SRPC(TP)

meeting for ratification.

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26.4. After detailed deliberations, 2nd 315MVA, 400/220/33kV ICT at Bellary Thermal Power

Station (BTPS) was approved by the Members.

27. Establishing 2 x 500 MVA, 400/220 kV Sub-Station at Lokapur in Mudhol Taluk,

Bagalkot district.

27.1. Director, CEA, informed that KPTCL has proposed to establish 2x500 MVA, 400/220 kV

Sub-station at Lokapur with following connectivity:

400 kV Connectivity:

a) 400 kV D/C line with Quad Moose conductor between Narendra New sub-station

and 400/220 kV Lokapur sub-station.

b) 2x500 MVA 400/220 kV ICT.

c) 2x125 MVAr bus reactors.

220 kV connectivity:

a) Double LILO of existing 220 kV Gadag-Bagalkot DC line to proposed 400/220

kV Lokapur.

b) Double LILO of 220 kV Mahalingpura-Soundatti DC line (Considering approved

2nd circuit between Mahalinpur and Bidanal with LILO to Soundatti) to proposed

400 kV Lokapur.

c) 220 kV DC line to proposed 220 kV Mughalkod sub-station from proposed

400/220 kV Lokapur.

d) 220 kV DC line to proposed 220 kV Hungund sub-station from proposed 400/220

kV Lokapur.

27.2. KPTCL informed that presently, 220/110 kV sub-stations at Athani, Kuduchi, Chikkodi,

Ghataprabha, Belgaum, M.K.Hubli and SRS Hubli and part loads of Mahalingpura are fed

from existing 2x500 MVA, 400/220 kV Narendra(PGCIL) sub-station. In addition to these 4

nos. of 220/110 kV sub-stations namely Mugulkhod, Hattargi, Desur and Salahalli sub-

stations with transformation capacity of 800 MVA are proposed.

27.3. During fault at 400kV Narendra sub-station, power supply to these 220kV sub-stations are

affected. Also the 2x500 MVA, 400/220kV transformers at Narendra and the 220 kV lines

emanating from 400kV Narendra are not satisfying 'n-1' contingency criteria during peak load

condition. Further, about 528 MW Wind generation, 229 MW Solar generation and 640 MW

Co-generation plants are interconnected to 220 kV Athani, Kuduchi, Chikkodi,

Mahalingapura, Mughlkod, Soundatti and Bagalkot sub-stations.

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27.4. The proposed 400/220 kV Lokapur sub-station results in increase in reliability of power

supply to the 220 kV sub-stations in the districts of Belagavi and Bagalkot. The 220 kV lines

in the vicinity are optimally loaded and the proposed 400 kV sub-station also aids in reliable

evacuation of power from RE generations in the 220 kV and downstream sub-stations in the

vicinity.

27.5. However, from the study carried out by CEA/CTUIL, it is observed that there is flow of

power from Lokapur to Narendra (New) in the high RE generation scenario in Karnataka and

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power is being injected at Narendra (New). It has already been highlighted that the constraint

in Kolhapur-Kolhapur (PG) 400 kV line is a limiting factor in export of power from Southern

Region. Hence, if KPTCL is planning to inject power in the ISTS system, LTA needs to be

applied by KPTCL so that system strengthening could be suitably planned.


27.6. Chief Engineer (PSPA-I), CEA, informed that 2 x 500 MVA, 400/220 kV Sub-Station at

Lokapur was earlier agreed for load drawl from ISTS Substation. However, it is observed that

power is being injected from Lokapur to Narendra (New) during high RE generation in and

around Lokapur. This may require strengthening of ISTS system. Further, margins are not

available for export of power from SR beyond Narendra (New) – Kolhapur 400 kV line.

27.7. Sr. DGM (CTUIL) opined that a directional relay may be installed to restrict the power flow

from Lokapur to Narendra (New). CGM, SRLDC opined that with the directional relay, the

power flow pattern will change and it will be injected to 220 kV network of Kudgi, Narendra,

Doni and Munirabad.

27.8. Representative of KPTCL informed that 400/220 kV Yalwar S/s and Kushtagi S/s will be

established under GEC-II project. The commissioning of Yalwar S/s and Kushtagi S/s would

relieve the RE generation evacuation constraints in the area and more power would flow to

south Karnataka.

27.9. Sr. DGM (CTUIL) proposed an additional connectivity of 400/220 kV Lokapur S/s with

BTPS as beyond BTPS adequate transmission system is available for evacuation of RE power

within KPTCL network. CGM, SRLDC opined that this could be a suitable proposal to

address the RE power injection at Narendra and KPTCL shall include in their proposal for

integration of Lokapur with its network.

27.10.KPTCL was requested to submit the study results of additional connectivity of 400/220 kV

Lokapur S/s with BTPS. It was decided that the proposal would be discussed in next

SRPC(TP) meeting.

28. Up-gradation of existing 220/66 kV sub-station by 2x500 MVA, 400/220 kV sub-station

at Peenya in Bengaluru city -Modification in 400 kV incoming line

28.1. Director, CEA, informed that KPTCL has informed that the proposal of establishing 2x500

MVA, 400/220 kV sub-station at Peenya with following 400 kV connectivity was approved

in 41st SCPSPSR held on 22.09.2017.

a) Up-gradation of existing 220kV substation to 400/220 kV GIS sub-station at Peenya in

Bengaluru City with 2x500 MVA, 400/220 kV transformers.

b) Peenya –Nelamangala 400kV D/C (with Quad Moose line conductor).

c) Bus extension to 220 kV Peenya (Existing).

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d) Peenya-NRS 220 kV D/C line.

28.2. In view of corridor constraint, following modification in 400 kV incoming line is proposed:

“Construction of 400 kV D/C Transmission line for a route length of 16.46 km with HPC

equivalent to twin ACSR Moose with ‘V’ strings from 400 kV Nelamangala sub-station to

the proposed 400/220 kV sub-station at Peenya in the existing 220 kV DC B1-B2

transmission line corridor (Between Nelamangala-Peenya) using special design Narrow

based towers”.

28.3. After deliberations, the above proposal was agreed.

29. Providing STATCOMs to 400/220 kV sub-station in Bengaluru city:

29.1. Director, CEA, informed that in the 1st SRPC(TP) meeting held on 16.12.2019, providing

dynamic reactive power support by utilizing STATCOMs at Hoody and Nelamangala was

discussed and it was also decided to explore the feasibility for use of both Solar inverter and

STATCOM for containing voltage within limits in the SR Grid.

29.2. Further, during the Joint study meeting of CEA with CTU and KPTCL held on 02.02.2020, it

was suggested to provide STATCOM with capacity of ±2x250 MVAR at any of the 400/220

kV sub-stations in Bengaluru city. CTU representative had informed that there was no space

to provide STATCOM in any ISTS sub-station in and around Bengaluru. However, land

availability adjacent to 400/220 kV Bidadi sub-station shall be confirmed. In this context,

letter had been addressed to KPCL dated 21st April 2021 to furnish details on availability of

land to an extent of appx.100x150 sq.m plot for installing ±2x250 MVAR STATCOM

adjacent to 400 kV bus of 400/220 kV Bidadi PGCIL sub-station and the reply is awaited.


29.3. KPTCL informed that land is available to install ±2x250 MVAR STATCOM at 400/220 kV

Mylasandra sub-station of KPTCL and requested for approval to install the STATCOM.

29.4. Sr. DGM (CTUIL) opined that the 1x125 MVAr bus reactor at Mylasandra can be utilized

along with proposed ±2x250 MVAR STATCOM as Mechanical Switched Reactor (MSR).

29.5. Member (Power System), CEA, suggested KPTCL to conduct the study along with CTUIL

for identification of size of STATCOM required at Mylasandra S/s for dynamic control of

voltage. The same would be discussed in the next SRPC(TP) meeting.

Transmission planning proposals by APTRANSCO

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30. Evacuation of 6,100 MW (AC) of Solar Power proposed by Andhra Pradesh Green

Energy Corporation Limited (APGECL) from various Pooling Stations under Phase-I

out of 10,000 MW (AC) of Solar power

1.1. Andhra Pradesh Green Energy Corporation Limited (APGECL) had proposed 6,100 MW

(AC) of solar power to be set by them under Phase-I in Prakasam, YSR Kadapa and

Ananthapur districts of Andhra Pradesh.

1.2. The locations of Solar Power Parks along with capacities are tabulated below. As per

APTRANSCO, power generated from the solar parks would be used for meeting the nine

hours Agricultural Supply in the state during day time.

Sl. No. Location of Solar Park Capacity proposed under

Phase-I (MW)

1 C.S. Puram, Prakasam Dist. 6002 Rudrasamudram, Prakasam Dist. 6003 Pendlimarri, YSR Kadapa Dist. 5004 M. Kambaladinne, YSR Kadapa Dist. 5005 Urichintala, Ananthapur Dist. 6006 Mudigubba, Ananthapur Dist. 5007 Chakrayapeta, YSR Kadapa Dist. 5008 Thonduru, YSR Kadapa Dist. 4009 Pampanuruthanda, Ananthapur Dist. 1,300

10 Kolimigundla, Ananthapur Dist. 600

Total capacity 6,100

1.3. APTRANSCO had carried out system studies for the following scenarios considering an

annual peak electricity demand of 14,611 MW by the year 2022-23. A maximum capacity

factor of 75% has been taken for wind and solar power as per Transmission Planning Criteria.

Scenario 1: Full Solar Full Wind (75% Solar, 75% wind)Scenario 2: Full Solar Full Wind (75% Solar, 75% wind, RTPP NIL)Scenario 3: Full Solar Less wind (75% Solar, 40% wind)Scenario 4: Full Solar, No wind (75% Solar, 0% wind)Scenario 5: Less Solar, Full wind (40% Solar, 75% wind)Scenario 6: No Solar, Full wind (0% Solar, 75% wind)Scenario 7: Less Solar, Less wind (40% Solar, 40% wind)Scenario 8: No Solar, No wind (0% Solar, 0% wind)

1.4. Based on the system studies for the 6,100 MW Solar Power, the following evacuation lines

are proposed for evacuation of 6,100 MW of Solar Power in Prakasam, YSR Kadapa and

Ananthapur Districts under Phase-1.

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Sl.No. Description

RevisedSolarPower

Capacity

Revised Network for evacuation andDeletion of earlier proposed Lines

1 C.S. Puram PoolingStations-1&2 to

Pamur SubstationPrakasam Dist.

600 MW 1) 220 kV TMSC Line (4 km) from PS-1 toCommon Tower, 220 kV TMSC Line (4km) from PS-2 to Common Tower and 220kV TMDC Line (15 km) from commonTower to Pamur SS.2) Upgradation of existing 132 kVSS/Pamur into 220 kV SS.3) Double LILO of existing 220 kV SMDCLine from 400 kV SS/Podili to Atmakur toPamur SS (13.5 km).

2 RudrasamudramPooling Stations-1&2to 220KV SS/Podili,

Prakasam Dist.

600 MW 220 kV TMSC Line (8 km) from PS-1 toCommon Tower, 220 kV TMSC Line (4km) from PS-2 to Common Tower and 220kV TMDC Line (38 km) from commonTower to 220 kV SS/Podili.

3 Pendlimarri PoolingStations-1&2 to

proposed PendlimarriSw. Station,

YSR Kadapa Dist.

500 MW 1) 220 kV TMSC Line (3 km) from PS-1 toCommon Tower, 220 kV TMSC Line (4km) from PS-2 to Common Tower and 220kV TMDC Line (6 km) from commonTower to proposed 220 kV Sw. Station atPendlimarri.2) Double LILO of existing 220 kVMuddnuru(RTPP)-Chinakampalli SMDCLine to Pendlimarri Sw. Station dulyconverting it as TMDC. Towers are suitablefor Twin Moose DC.

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Sl.No. Description

RevisedSolarPower

Capacity


4 M. KambaladinnePooling Stations-1&2

to 400KVSS/Jammalamadugu,

YSR Kadapa Dist.

500 MW 220 kV TMSC Line (2 km) from PS-1 toCommon Tower, 220 kV TMSC Line (5km) from PS-2 to Common Tower and 220kV TMDC Line (20 km) from commonTower to the existing 400 kV/SSJammalamadugu.

5 Urichinthala PoolingStations-1&2 to

400KVSS/Talaricheruvu,Anantapur Dist.

600 MW 220 kV TMSC Line (4 km) from PS-1 toCommon Tower, 220 kV TMSC Line (1km) from PS-2 to Common Tower and 220kV TMDC Line (6 km) from commonTower to the existing 400 kV/SSTalaricheruvu.

6 Mudigubba PoolingStations-1&2 to the

proposed Sw. Stationat Mudigubba,

Anantapur Dist.

500 MW 1) 220 kV TMSC Line (4 km) from PS-1 toCommon Tower, 220 kV TMSC Line (3km) from PS-2 to Common Tower and 220kV TMDC Line (7 km) from commonTower to the proposed Sw. Station atMudigubba2) Making Double LILO of 220 kVPulivendula-Mutyalacheruvu SMDC Line(5 km) which is (under construction) to theproposed Mudigubba Sw. Station.

7 Chakrayapeta PoolingStations-1&2 to theexisting 220KV SS/Chakrayapeta, YSR

Kadapa Dist.

500 MW 1) 220 kV TMSC Line (2 km) from PS-1 toCommon Tower, 220 kV TMSC Line (2km) from PS-2 to Common Tower and 220kV TMDC Line (8 km) from commonTower to the existing 220 kVSS/Chakrayapeta2)220 kV TMDC line from the existing 220kV SS/ Chakrayapeta to the existing 400kV SS/ Kalikiri (80 km).

8 Thonduru PoolingStation-1 to theexisting 220KV

SS/Kondapuram &Pooling Station-2 tothe existing 220KV

SS/ Yerraguntla, YSR Kadapa Dist.

400 MW 1) 220 kV SMDC line (30 km) from PS-1to the existing 220 kV SS/Kondapuram

2) 220 kV SMDC line (35 km) from PS-2to the existing 220 kV SS/Yerraguntla

9 Pampanur TandaPooling Stations-

1,2,3&4 to proposedSw. Station at

Pampanur Tanda,Anantapur Dist.

1300 MW 1) 220 kV TMSC Line (3 km) from PS-1 toCommon Tower, 220KV TMSC Line(3KM) from PS-2 to Common Tower and220KV TMDC Line (4 km) from commonTower to the proposed Sw. Station atPampanur Tanda.

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Sl.No. Description

RevisedSolarPower

Capacity


2) 220 kV TMSC Line (3 km) from PS-3 toCommon Tower, 220KV TMSC Line (3km) from PS-4 to Common Tower and220KV TMDC Line (4 km) from commonTower to the proposed Sw. Station atPampanur Tanda.

10 Kolimigundla PoolingStations-1&2 to


600 MW 220 kV TMSC Line (2 km) from PS-1 toCommon Tower, 220KV TMSC Line (2km) from PS-2 to Common Tower and 220kV TMDC Line (15 km) from commonTower to the existing 400 kV SS atTalaricheruvu

Total Capacity 6100 MW

1.5. In addition, the following transmission schemes had also been proposed by APTRANSCO.

1 Proposal for extension of Power Supply for a CMD of 400 MVA to the proposed Industrial Park at Guttapadu by APIIC:i. Laying 220 kV TMDC Line from 400 kV Ghani SS to the proposed

Switching Station at Guttapadu (14 km length) and ii. Making Double LILO of the 220 kV Narnur-Somayajulu Palli DC line at the

proposed Switching Station at Guttapadu (7 km)

The already approved transmission schemes in AP and changes proposed by APTRANSCO

are given below:

Sl. No. Schemes approved earlier Revised Proposals/Remarks1 400 kV Jammalamadugu

(Kondapuram) - Ghani QMDC line as per 38th SCPSPSR

Dropped.

Proposed Lines:a) 400 kV QMDC line fromTakaricheruvu to Podili b) 400 kV TMDC Line fromJammalamadugu (Kondapuram) to RTPP

2 400KV SS Uravakonda:a) 2x315 + 2x500 MVA ICTs

b) 220 kV DC line from 220 kVVajrakarur SS to 220 kV AnanthapurSS

as per 40th Standing CommitteeMeeting.

a) Proposed 4x500 MVA ICT to meet theN-1 contingency.

b) Dropped.

3 400kV Talarichervu SS: 3x315 MVA ICT as per 40th StandingCommittee Meeting.

Proposed 1x315 + 3x500 MVA ICTs

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Sl. No. Schemes approved earlier Revised Proposals/Remarks4 400/220kV SS at Mylavaram

3x315 MVA ICTs and 1x125 MVARBus reactor and 400kV QMDC linefrom 400kV Jammalmadugu–Mylavaram SS (2 km) for evacuationof 1000 MW of Solar Power atMylavaram (1000MW Solar Powerof Kadapa Ultra Mega Solar Park ofAPSPCL) as per 40th StandingCommittee Meeting.

Dropped.

1000MW will be evacuated to 400 kV Jammalamadugu (Kondapuram) Substation:a) PS-1 to Jammalamadugu SS: 220kV

TMDC/SC line: 12.5 km b) PS-2 to Jammalamadugu SS: 220kV

TMDC/SC line: 10.0 km c) PS-3 to Jammalamadugu SS: 220kV

SMDC line: 8.0 km d) PS-4 to Jammalamadugu SS: 220kV

SMDC Line: 9.8 km (Alreadycommissioned)

5 400 kV Jammalamadugu SS (Kondapuram): 3x315 MVA ICTs as per 40th

Standing Committee Meeting.

Proposed 2x500 +2x315 MVA ICTs

6 220 kV Single Moose DC line from 400/220 kV Hindupur SS to 220 kVPampanur Tanda SS as per 40th


Proposed 220 kV Twin Moose DC line from 400/220 kV Hindupur SS to 220 kVPampanur Tanda SS.

1.6. In the 2nd SRPC(TP) meeting, it was decided that the transmission scheme proposed by

APTRANSCO would be studied in detail in a joint meeting of CEA, SRPC, CTU, POSOCO/

SRLDC and APTRANSCO and the scheme would be put up in the next SRPC(TP) meeting

for discussion.

1.7. Accordingly, the proposal was discussed in the joint study meeting on 04.02.2021. After

detailed deliberation, it was decided that APTRANSCO will carry out studies on the all-India

study file prepared in consultation with SR constituents, for the following nine scenarios:

June- afternoon, evening, late nightAugust- afternoon, evening, late nightFebruary- afternoon, evening, late night

and the study results will be discussed in the separate meeting with CEA, CTU and SRLDC

and the transmission system emerged from the study would be discussed in the forthcoming

SRPC(TP).

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30.1. APTRANSCO had conducted system studies for the above 9 scenarios considering the

proposed 6100 MW solar power along with three additional scenarios for August month with

lean agriculture consumption & one with less solar and one for June month with 80% solar.

LGB for 12 scenarios is given below:

30.2. Results of the system studies was discussed in the meeting on 19.05.2021 with

APTRANSCO, CTU, SRPC and SRLDC. After deliberation following were agreed:

i. Transmission system proposed by APTRANSCO was agreed with following

modifications:

As line length of Talaricheruvu-Podili 400 kV QMDC Line is about 250 km (as

informed by APTRANSCO), the installation of 80 MVAr Switchable Line Reactors at

both the ends on each circuit may result in overcompensation and also may lead to

oscillations. Accordingly, Talaricheruvu – Podili 400 kV QMDC line may be

implemented with 125 MVAr switchable line reactor on each circuit at Talaricheruvu

end and 125 MVAr bus reactor shall be provided at Podili substation.

As line length of Jammalamadugu-RTPP 400 kV TMDC Line is about 30 km (as

informed by APTRANSCO), therefore to avoid any overvoltage during switching, it

was agreed to install 2x125 MVAr bus reactor at Jammalamadugu end instead of 80

MVAr Switchable Line Reactors at Jammalmadugu end on each circuit of

Jammalamadugu-RTPP 400 kV TMDC Line.

1x125 MVAr, 420 kV bus reactor to be installed at 400/220 kV Kalikiri S/s.

ii. With respect to load generation imbalance during lean / no demand from agricultural

sector, APTRANSCO confirmed that dispatch of thermal machines would be reduced so

as to maintain the load generation balance and APTRANSCO also ensured that they

would not cause any congestion/ constraints in the ISTS grid due to injection of power

from the proposed solar parks.

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iii. In case, any constraints / congestion are observed in the ISTS grid due to injection of

power from the proposed solar generators or non-backing down of thermal generators

during high RE generation, APTRANSCO would apply for LTA so that suitable system

strengthening of ISTS could be identified and implemented as per requirements.

iv. The transmission system would be put up for discussion/ratification in the next

SRPC(TP) meeting.


30.3. The following transmission system was agreed for evacuation of 6100 MW Solar Power:

Sl.No.

DescriptionSolarPower

CapacityTransmission Scheme

1

C.S. Puram PoolingStations-1&2 to

Pamur SubstationPrakasam Dist.

600 MW

1) 220 kV TMSC Line (4 km) from PS-1 toCommon Tower, 220 kV TMSC Line (4km) from PS-2 to Common Tower and 220kV TMDC Line (15 km) from commonTower to Pamur SS.2) Upgradation of existing 132 kVSS/Pamur into 220 kV SS.3) Double LILO of existing 220 kV SMDCLine from 400 kV SS/Podili to Atmakur toPamur SS (13.5 km).

2

RudrasamudramPooling Stations-1&2to 220KV SS/Podili,

Prakasam Dist.

600 MW

220 kV TMSC Line (8 km) from PS-1 toCommon Tower, 220 kV TMSC Line (4km) from PS-2 to Common Tower and 220kV TMDC Line (38 km) from commonTower to 220 kV SS/Podili.

3

Pendlimarri PoolingStations-1&2 to

proposed PendlimarriSw. Station,

YSR Kadapa Dist.

500 MW

1) 220 kV TMSC Line (3 km) from PS-1 toCommon Tower, 220 kV TMSC Line (4km) from PS-2 to Common Tower and 220kV TMDC Line (6 km) from commonTower to proposed 220 kV Sw. Station atPendlimarri.2) Double LILO of existing 220 kVMuddnuru(RTPP)-Chinakampalli SMDCLine to Pendlimarri Sw. Station dulyconverting it as TMDC. Towers are suitablefor Twin Moose DC.

4

M. KambaladinnePooling Stations-1&2

to 400KVSS/Jammalamadugu,

YSR Kadapa Dist.

500 MW

220 kV TMSC Line (2 km) from PS-1 toCommon Tower, 220 kV TMSC Line (5km) from PS-2 to Common Tower and 220kV TMDC Line (20 km) from commonTower to the existing 400 kV/SSJammalamadugu.

5 Urichinthala PoolingStations-1&2 to

600 MW 220 kV TMSC Line (4 km) from PS-1 toCommon Tower, 220 kV TMSC Line (1

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Sl.No.




km) from PS-2 to Common Tower and 220kV TMDC Line (6 km) from commonTower to the existing 400 kV/SSTalaricheruvu.

6

Mudigubba PoolingStations-1&2 to the

proposed Sw. Stationat Mudigubba,

Anantapur Dist.

500 MW

1) 220 kV TMSC Line (4 km) from PS-1 toCommon Tower, 220 kV TMSC Line (3km) from PS-2 to Common Tower and 220kV TMDC Line (7 km) from commonTower to the proposed Sw. Station atMudigubba2) Making Double LILO of 220 kVPulivendula-Mutyalacheruvu SMDC Line(5 km) which is (under construction) to theproposed Mudigubba Sw. Station.

7

Chakrayapeta PoolingStations-1&2 to theexisting 220KV SS/Chakrayapeta, YSR

Kadapa Dist.

500 MW

1) 220 kV TMSC Line (2 km) from PS-1 toCommon Tower, 220 kV TMSC Line (2km) from PS-2 to Common Tower and 220kV TMDC Line (8 km) from commonTower to the existing 220 kVSS/Chakrayapeta2)220 kV TMDC line from the existing 220kV SS/ Chakrayapeta to the existing 400kV SS/ Kalikiri (80 km).

8

Thonduru PoolingStation-1 to theexisting 220KV

SS/Kondapuram &Pooling Station-2 tothe existing 220KV

SS/ Yerraguntla, YSR Kadapa Dist.

400 MW

1) 220 kV SMDC line (30 km) from PS-1to the existing 220 kV SS/Kondapuram

2) 220 kV SMDC line (35 km) from PS-2to the existing 220 kV SS/Yerraguntla

9

Pampanur TandaPooling Stations-

1,2,3&4 to proposedSw. Station at

Pampanur Tanda,Anantapur Dist.

1300 MW

1) 220 kV TMSC Line (3 km) from PS-1 toCommon Tower, 220KV TMSC Line(3KM) from PS-2 to Common Tower and220KV TMDC Line (4 km) from commonTower to the proposed Sw. Station atPampanur Tanda.2) 220 kV TMSC Line (3 km) from PS-3 toCommon Tower, 220KV TMSC Line (3km) from PS-4 to Common Tower and220KV TMDC Line (4 km) from commonTower to the proposed Sw. Station atPampanur Tanda.

10 Kolimigundla PoolingStations-1&2 to

400KV

600 MW 220 kV TMSC Line (2 km) from PS-1 toCommon Tower, 220KV TMSC Line (2km) from PS-2 to Common Tower and 220

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Sl.No.



SS/Talaricheruvu,Anantapur Dist.

kV TMDC Line (15 km) from commonTower to the existing 400 kV SS atTalaricheruvu

Total Capacity 6100 MW

In addition, following transmission system was approved:

1 Proposal for extension of Power Supply for a CMD of 400 MVA to the proposed Industrial Park at Guttapadu by APIIC:

i. Laying 220 kV TMDC Line from 400 kV Ghani SS to the proposed Switching Station at Guttapadu (14 km length) and

ii. Making Double LILO of the 220 kV Narnur-Somayajulu Palli DC line at the proposed Switching Station at Guttapadu (7 km)

2 Chinakampalli – Rajampeta 220kV D/C Line (strung with ACSR DEER Conductor) to be strengthened by replacing with equivalent ACSS conductor.

Following reactors were approved:

1. Talaricheruvu – Podili 400 kV QMDC line may be implemented with 125 MVAr

switchable line reactor on each circuit at Talaricheruvu end

2. 125 MVAr bus reactor at Podili substation.

3. 2x125 MVAr bus reactor at Jammalamadugu end of Jammalamadugu-RTPP 400 kV

TMDC Line

4. 1x125 MVAr, 420 kV bus reactor to be installed at 400/220 kV Kalikiri S/s.

The following modification was agreed in already approved transmission scheme:

Sl.No.

Schemes approved earlier Revised Proposals/Remarks

1 400 kV Jammalamadugu (Kondapuram) - Ghani QMDC line as per 38th SCPSPSR

Dropped.

Proposed Lines:a) 400 kV QMDC line from Takaricheruvu toPodili b) 400 kV TMDC Line from Jammalamadugu(Kondapuram) to RTPP

2 400KV SS Uravakonda:a) 2x315 + 2x500 MVA ICTs

b) 220 kV DC line from 220 kVVajrakarur SS to 220 kV

a) Proposed 4x500 MVA ICT to meet the N-1contingency.

b) Dropped.

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Sl.No.

Schemes approved earlier Revised Proposals/Remarks

Ananthapur SS

as per 40th Standing CommitteeMeeting.

3 400kV Talarichervu SS: 3x315 MVA ICT as per 40th


Proposed 1x315 + 3x500 MVA ICTs

4 400/220kV SS at Mylavaram 3x315 MVA ICTs and 1x125MVAR Bus reactor and 400kVQMDC line from 400kVJammalmadugu–Mylavaram SS(2 km) for evacuation of 1000MW of Solar Power atMylavaram (1000MW SolarPower of Kadapa Ultra MegaSolar Park of APSPCL) as per40th Standing CommitteeMeeting.

Dropped.

1000MW will be evacuated to 400 kV Jammalamadugu (Kondapuram) Substation:a) PS-1 to Jammalamadugu SS: 220kV

TMDC/SC line: 12.5 km b) PS-2 to Jammalamadugu SS: 220kV

TMDC/SC line: 10.0 km c) PS-3 to Jammalamadugu SS: 220kV

SMDC line: 8.0 km d) PS-4 to Jammalamadugu SS: 220kV

SMDC Line: 9.8 km (Alreadycommissioned)

5 400 kV Jammalamadugu SS (Kondapuram): 3x315 MVA ICTs as per 40th


Proposed 2x500 +2x315 MVA ICTs

6 220 kV Single Moose DC line from 400/220 kV Hindupur SS to 220 kVPampanur Tanda SS as per 40th


Proposed 220 kV Twin Moose DC line from 400/220 kV Hindupur SS to 220 kV PampanurTanda SS.

31. Proposal for removing LILO arrangement of 400 kV Vemagiri – Sattenapalli Line at

400/220 kV SS (PGCIL)/Nunna to make 2nd circuit of 400 kV Vemagiri – Sattenapalli

Line.

31.1. APTRANSCO vide letter dated 30.03.2021 had informed that in the special meeting on grid

related issues held on 20th October 2015 at SRPC, Bengaluru, it was recorded that LILO of

one circuit from existing 400 kV Vemagiri – Nunna TMDC line at 400 kV SS Sattenapalli

was agreed due to non-availability of sufficient load at 400 kV Sattenapalli SS.

APTRANSCO has now proposed to remove the LILO arrangement of 400 kV Vemagiri –

Sattenapalli Line at 400/220 kV SS Nunna (PGCIL) SS to make 2nd circuit of 400 kV

Vemagiri – Sattenapalli Line.

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31.2. If above proposal is agreed, the equipments pertaining to following 400 kV Bays of

APTRANSCO at 400/220KV SS (PGCIL), Nunna, will be taken out and kept as spare which

will be utilized by APTRANSCO whenever necessary.

i. 400 kV Vemagiri Feeder Main Bay ii. 400 kV Vermagiri Feeder Tie Bay iii. 400 kV Sattenapalli Feeder Main Bay

iv. 63 MVAR Bus Reactor including Bus Reactor Bay

31.3. After removing LILO arrangement of 400 kV Vermagiri – Sattenapalli Line at 400/220 kV

SS(PGCIL) Nunna, the only feeder which will be in service at 400/220 kV SS (PGCIL)

Nunna SS is 400 kV VTPS Feeder. As the length of 400 kV VTPS – Nunna is short (~19.3

km), 63 MVAR Bus Reactor of APTRANSCO will be taken out and installed at one of the

400 kV Substations of APTRANSCO based on Voltage Profile and Field Feasibility. As per

System Studies carried out with the existing network, it is observed that there is no much

difference in Power flows on the Lines after removing LILO arrangement of 400 kV

Vemagiri – Sattenapalli line at 400/220 kV SS (PGCIL), Nunna, to make 2nd circuit of 400

kV Vemagiri-Sattenapalli line.

31.4. The proposal was discussed in the meeting held on 19.05.2021 and in the meeting, it was

informed that in the 9th SCPSPSR meeting held on 04.12.1998, it was recorded that Vizag –

Rajamundry – Vijayawada 400 kV D/c lines and Vizag – Khammam – Hyderabad 400 kV D/

c lines had been planned by APSEB as a part of the generation planned at Simhadri complex.

The proposals had already been accorded techno-economic clearance of CEA.

Subsequently in the 14th SCPSPSR meeting held on 03.12.2001 as part deliberations for

“Provision of 2nd 400/220 kV, 315 MVA transformer at Viiaywada” following had been

recorded:

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“C.E. (SP&PA), CEA stated that studies had also indicated the need of another 400 kV

substation namely at Tadikonda, to be constructed by APTRANSCO as a part of their

transmission system for evacuation of power from short gestation projects. The 400 kV D/

c line from Vemagiri could be taken to Tadikonda instead of Vijaywada (Nunna) and the

Tadikonda substation could be integrated with the grid through a LILO of Vijaywada

(Nunna) – Srisailam line. APTRANSCO could provide one or two transformers at

Tadikonda depending on their need and as such the provision of 2nd transformer at

Vijaywada (Nunna) may not be necessary.”

In the 15th SCPSPSR meeting held on 18.04.2002, as part of proposal for LILO of 400 kV

Gazuwaka – Vijaywada D/C line at Vemagiri of APTRANSCO it has been recorded that:

“Vemagiri was planned to be the pooling station for short gestation projects in that area of

A.P. from where 400 kV lines to Vizag and Tadikonda (new 400 kV S/S) were planned in the

AP system.” During the meeting it was also recorded that “LILO of Gazuwaka – Vijaywada

D/C line at Vemagiri would be permitted only after completion of Vemagiri – Vizag and

Vemagiri – Tadikonda 400kV D/C lines by APTRANSCO.” Further The proposal was

concurred after review in the 19th SCPSPSR meeting held on 14.06.2004. However, in the

subsequent SCPSPSR meetings the lines are referred as Vemagiri – Narsaraopet 400 kV

transmission corridor.

31.5. APTRASCO informed that Rajamundry is Vemagiri only and the Tadikonda was renamed as

Narsaraopet and later on as Sattenapalli based on the local village names.

31.6. During the meeting, it was concluded that Vizag – Rajamundry (Vemagiri) – Vijayawada

(Nunna) 400 kV D/c lines were planned and agreed as part of Vizag transmission system for

evacuation of power from Simhadri generation complex. However, with the gas based

generations in Vemagiri area and load requirements of Andhra Pradesh, Tadikonda

(Narsaraopet) new 400 kV substation was planned by APTRANSCO and the Rajamundry

(Vemagiri) – Vijayawada (Nunna) 400 kV D/c lines was to be terminated at Tadikonda

(Narsaraopet) or now referred as Sattenapalli, instead of Vijayawada (Nunna) substation of

PGCIL. However, no records have been found towards the LILO arrangement of one circuit

of Vimagiri – Vijayawada (Nunna) 400kV D/c line at Sattenapalli of APTRANSCO.

31.7. After detailed deliberations and looking into the approval of original arrangement for

establishment of Vimagiri – Sattenapalli (Tadikonda or Narsaraopet) 400 kV D/c line, the

proposal for removal of LILO arrangement of 400 kV Vemagiri – Sattenapalli line at 400/220

kV SS (PGCIL) / Nunna to make 2nd circuit of 400 kV Vemagiri – Sattenapalli line was

agreed. It was also agreed that APTRANSCO may remove/dismantle the balance portion

from the Nunna substation upto the LILO point and the two nos. of 400 kV bays at Nunna

and utilize the same as per their suitability. It was also decided that the proposal would be put

up in the next meeting of SRPC(TP) for ratification.


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31.8. The proposal for removal of LILO arrangement of 400 kV Vemagiri – Sattenapalli line at

400/220 kV SS (PGCIL) / Nunna to make 2nd circuit of 400 kV Vemagiri – Sattenapalli line

was agreed by the Members. It was also agreed that the equipment pertaining to 400 kV Bays

of APTRANSCO at 400/220KV SS (PGCIL), Nunna, as mentioned in para 31.2, would be

taken out and kept as spare which would be utilized by APTRANSCO whenever necessary.

32. Evacuation of Power from 1x800 MW Sri Damodaram Sanjeevaiah (SDS) TPS/Stage-II

(Unit-3) established by APPDCL at 400 kV SS Krishnapatnam

32.1. APTRANSCO had informed that APPDCL is constructing 1x800 MW SDS TPS/Stage-II

(Unit-3) at Krishnapatnam, which is in final stage of construction and expected to be

commissioned shortly. This generating unit would be connected to 400 kV Bus of

Krishnapatnam 400 kV S/S. However, transmission system for evacuation of power from the

generating unit had not been planned and the same had not been put up for approval in any

SCPSPSR/SRSCT meetings. APTRANSCO had requested for in-principal approval for

commissioning of 1x800 MW SDSTPS/ Stage-II (Unit-3).

32.2. The proposal was discussed in the meeting held on 19.05.2021. In the meeting it was

informed that as the Standing Committee or SRPC(TP) forum had not been informed by

APTRANSCO regarding implementation of 1x800 MW SDSTPS/Stage-II (Unit-3) at

Krishnapatnam generation complex, transmission system for evacuation of power from the

generating unit had not been planned. However, with the bypassing of Nellore (existing) from

Nellore PS, power flow pattern has changed and sufficient margins are available in the grid to

evacuate power from 1x800 MW SDSTPS/Stage-II (Unit-3). The bypassing arrangement has

also facilitated in maintaining short circuit level at Nellore (existing) and Nellore (PS) within

the prescribed limits. Further loadings on Krishnapatnam – Nellore 400 kV D/c line (Quad

Moose, with thermal rating of about 1,750 MW) is observed to be about 1,500-1,600 MW,

which is quite close to the thermal limit of the line. Therefore, in case any constraints are

observed in future, this section may need augmentation.

32.3. It had been agreed that looking into advanced commissioning stage of 1x800 MW

SDSTPS/Stage-II (Unit-3) at Krishnapatnam generation complex, in-principal approval may

be accorded for evacuation of power from the generating unit, subject to the generation

developer meeting the other conditions as specified by SLDC/SRLDC for connectivity to the

grid. The same would be taken up for ratification in the next meeting of SRPC(TP).

It had also been agreed that APTRANSCO shall put up transmission system strengthening

required, if any, in the SRPC(TP) forum for deliberation and approval.

32.4. After deliberations, the proposal of evacuation of power from 1x800 MW Sri Damodaram

Sanjeevaiah (SDS) TPS/Stage-II (Unit-3) was agreed by the Members.

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Transmission planning proposals by TSTRANSCO

33. Relocation of 125 MVAR Reactors from proposed 400/11kV Veljipur SS, 400/11 kV

Yellaipally SS and 400/11 kV Tukkapur (New) SS

33.1. The proposal for extending power supply to meet the load requirement for lifting additional 1

TMC of water from Godavari Basin in Link-I, Link-II & Link-IV of Kaleshwaram Lift

Irrigation Scheme was approved in 2nd meeting of Southern Regional Power Committee

(Transmission Planning) [SRPC(TP)].

33.2. TSTRANSCO vide letter dated 08.02.2021 has informed that they have accorded approval

for providing only Consumer Bus at new 400/11kV Veljipur, 400/11kV Yellaipally &

400/11kV Tukkapur (New) Lift irrigation(LI) substations under Link – IV due to near

vicinity to the corresponding existing Link IV substations. At the new proposed 400/11kV

Veljipur, 400/11kV Yellaipally & 400/11kV Tukkapur (New) LI substations, only Metering

Bay and Consumer Bus with Bus Sectionaliser is proposed and there is no 400kV Double

Bus System. Therefore, 125MVAR Reactors cannot be connected at the new proposed 400kV

substations.

In view of the above, TSTRANSCO has proposed the relocation of 125MVAR Reactors asfollows:

Sl. No.Earlier approved 125 MVARReactor at Substations of Link –IV

Now Proposed Substations to relocateReactors

1 400/11 kV Veljipur LI SS 400/13.8/11 kV Ramadugu LI SS

2 400/11 kV Yellaipalli LI SS 400 kV Kachapur Swiching Station

3 400/11 kV Tukkapur (New) LI SS Tukkapur 400/11 kV LI SS (Existing)

33.3. Relocating 125 MVAR Reactor from Veljipur 400/11 kV LI Substation to 400 kV

Ramadugu LI Substation:

The Veljipur 400/11kV LI Substation is around 5 km from existing 400/11kV Tippapur LISubstation where 1No. 400kV 125 MVAR Reactor is already provided. The Ramadugu400/220/11kV LI Substation is in Link – II of the Kaleshwaram Lift irrigation project and isconnected to two major Power Sources NTPC and STPP Jaipur (Singareni) and there is noReactor at Ramadugu LI Substation. Hence it is proposed to relocate 125 MVAR Reactorfrom Veljipur LI Substation to Ramadugu LI Substation.

33.4. Relocating 125 MVAR Reactor from Yellaipalli 400/11 kV LI Substation to 400 kV

Kachapur Switching Station:

The Yellaipally 400 kV Switchyard is around 8 km from existing 400/13.8/11kV ChandlapurLI Substation where 1 No. 400kV 125 MVAR Reactor is already provided.

In the 2nd SRPC(TP) meeting, 400 kV Kachapur Switching Station was approved with bussectionaliser arrangement along with 1 No. 400kV, 125 MVAR Reactor. Now it is proposed

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to relocate 125MVAR Reactor from Yellaipalli LI Substation to Kachapur Switching Stationand with this relocation, 400kV Kachapur Switching Station will have 125 MVAR Reactorson both the sections.

33.5. Relocating 125 MVAR Reactor from Tukkapur (New) 400/11 kV LI Substation to 400

kV Tukkapur (Existing) LI Substation:

The Tukkapur (New) 400/11kV LI Substation is around 0.5 km from existing 400/11 kVTukkapur (Existing) LI Substation and there is no reactor at Tukkapur (Existing) Substationand hence, it is proposed to relocate 125 MVAR Reactor from Tukkapur (New) 400/11kV LISubstation to 400 kV Tukkapur (Existing) LI Substation.

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33.6. Due to paucity of time, the agenda item could not be discussed in the 3rd SRPC(TP) meeting

and it was decided that same may be taken up in the next meeting of 3rd SRPC(TP).

Transmission Planning proposals by KSEB

34. Modification in 400 kV Edamon substation

34.1. 400 kV substation at Edamon was agreed at 39th SCPSPSR held on 28-29 December, 2015.

The following scheme was agreed upon:

Six 400 kV line bays

Four spare 400 kV line bay

Two transformer bays with 2x315 MVA 400/220 kV ICT’s.

The 400 kV connectivity would be established by charging existing 220 kVTirunelveli – Edamon Twin Moose D/c feeder, constructed in 400 kV parameters, at400 kV, and by LILO-ing both circuits of under construction 400 kV Tirunelveli –Cochin East Quad Moose D/c feeder.

Additional connectivity to 400 kV substation, Trivandrum North is planned later byLILO of existing 400 kV Tirunelveli – Trivandrum (North) Twin Moose D/c feeder.

Downstream 220kV connectivity: -

a. 220 kV connectivity will be directly to existing 220 kV switchyard of Edamon andfurther to following stations

b. 220 kV D/c feeder to Pothencode

c. 220 kV D/c and 220 kV S/c feeders to Sabarigiri

d. 220 kV feeders to Kundara and Edappon.

34.2. In the 2nd SRPC(TP) meeting. KSEB informed that as per studies carried out by KSEB, only

six circuits need to be connected to the new 400/220 kV substation at Edamon, Nagamala

Estate. The following revised transmission scheme has been proposed by KSEB:

i. Tirunelveli - Edamon I & II Twin Moose feeders constructed in 400 kV parameters andnow charged at 220 kV level will be terminated at 400 kV Edamon substation.

ii. One of the 400 kV Quad Moose Tirunelveli- Cochin East I & II feeders will beLILO’ed at 400 kV Edamon substation.

iii. One of the 400 kV Twin Moose Tirunelveli - Trivandrum I & II feeders will beLILO’ed at 400 kV Edamon substation.

iv. The 220 kV connectivity to 220 kV Edamon (KSEBL) existing substation will beestablished by using the balance portion of Twin Moose feeder to Edamon (KSEB)substation.

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v. 3 Nos. + 1 No.(spare) 166.67 MVA, 400/220/33 kV single phase auto transformerbanks at 400 kV Edamon substation.

34.3. Further, KSEB had proposed the following downstream connectivity at Edamon (Nagamala

Estate):

220 kV connectivity to existing 220 kV switchyard of Edamon

220 kV D/c feeder to Pothencode

220 kV D/c feeder to Sabarigiri

220 kV feeder to Pathanamthitta

220 kV feeders to Kundara and Edappon.

34.4. KSEB revised ICT capacity at Edamon to 2x500 MVA instead of 2x315MVA.

34.5. Due to paucity of time, the agenda could not be discussed in the 3rd SRPC(TP) meeting and it

was decided that same may be taken up in the next meeting of SRPC(TP).

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Annex-A

List of Participants

Sl No. Name Designation

Central Electricity Authority

1 Goutam Roy Member (Power System)

2 Ishan Sharan Chief Engineer (PSPA-I)

3 Manjari Chaturvedi Director (PSPA-I)

4 J. Ganeswara Rao Dy. Director (PSPA-I)

5 Kanchan Chauhan Dy. Director (PSPA-I)

6 Mayank Wadhwa Assistant Director (PSPA-I)

SRPC

7 N R L K Prasad Member Secretary (I/c)

8 K. P. Madhu Superintending Engineer (O)

9 Meka Ramakrishna Superintending Engineer (C)

10 N. S. Malini EE, Operation

CTUIL

11 Subir Sen COO

12 Ashok Pal Dy. COO

13 Anil Kumar Meena Sr. DGM

14 Ajay Dahiya Chief Manager

15 Ankush Patel Manager

16 Himanshi Dy. Manager

POSOCO

17 S. R. Narasimhan Director (System Operation)

18 V. Suresh ED (SRLDC)

19 S. P. Kumar CGM (SRLDC)

20 R. K. Porwal CGM (NLDC)

21 Madhukar Goodelli DGM (SRLDC)

POWERGRID

22 B. B. Mukherjee Chief General Manager

23 C. A. Mathew Chief General Manager

24 Dhananjaya G. General Manager

25 V. K. Narwal Sr. DGM

SECI

26 R. K. Agarwal Consultant

NPCIL

27 Sandeep Sarwate Addl. Chief Engineer (Transmission)

NTPC

28 S. S. Mishra GM

29 Subhash Thakur Addl GM(Project Engg-Elect)

NHPC

30 J. R. Chaudhary ED

31 J. C. Sarkar GM

Annex-A

List of Participants

Sl No. Name Designation

NLCIL

32 Venkateswara Rao G. Chief General Manager/PSE

33 G. Kannan Chief General Manager

34 D. S. Ramakrishnan DGM/ELECTRICAL

TANGEDCO

35 M. Sudarsan Superintending Engineer/System Studies

36 T. Sumathi Executive Engineer/System Studies

37 G. Rameshkumar Executive Engineer/System Studies

KSEBL

38 Dr. Anand S. R. Chief Engineer (Transmission System Operation)

39 Dr. M.G. Suresh Kumar Executive Engineer (Power System Engineering)

40 BIJU S. S. Executive Engineer

TSTRANSCO

41 T. Jagath Reddy Director/ Transmission

42 B. Narsinga Rao Director/ Grid Operations

43 K. Prasanna Lakshmi Chief Engineer/ Power Systems

44 S. Vivekananda Kumar Raju Chief Engineer/ SLDC

45 G. Sampath Kumar Chief Engineer/Lift Irrigation Schemes

46 K. Yagna Prasad Divisional Engineer/ PP-I/SLDC

47 A. Ravinder Rao Divisional Engineer-I/ 400kV

48 M. Sheshagiri Divisional Engineer/ System Studies-II

49 P. Srinivasu Assistant Divisional Engineer/SS-II

50 P. Sandeep Reddy Assistant Engineer/SS-II

APTRANSCO

51 P. Surya Chandram Chief Engineer/ Power Systems, Planning &

Design. 52 Chava Srinivasa Rao EE/System Studies-1

KPTCL

53 Chethan. D. Superintending Engineer

54 Divya Prabha. H. Assistant Executive Engineer(E), (PSS)

Annex-2

S.No. Substation / ICT Voltage Ratio Oraganisation MVA Commissioning Month

CENTRAL SECTOR

1 VSC based HVDC Terminal at Pugalur and

320 PGCIL 1000 Jun-21 North Trishur (2000MW) (Monopole-I)

2 Raigarh and Pugalur Station with 6000 MW

800 PGCIL 1500 Mar-21 HVDC Terminal (Pole-II)

3 North Trichur Substation 400/220 PGCIL 630 Mar-21

4 Aug. at Gaiuwaka (T IF) 400/220 PGCIL 500 Mar-21

Pugalur (2000 MW) and Terminal at North

5 Trichur (2000 MW) VSC based HVDC Station 320 PGCIL 1000 Mar-21

(Monooole-11)

6 Raigarh and Pugalur Station with 6000 MW

800 PGCIL 1500 Sep-20 HVDC Terminal /Pole-I)

Total of Central Sector 6130

STATE SECTOR

7 BTPS Switchvard 400i220 TSTRANSCO 315 Jun-21

8 Bheeme:hanour 220i33 TSTRANSCO 32 Jun-21

9 Akkararn LIS sis (Station TIF-1 and II) and

220/11 TSTRANSCO 95 Jun-21 (Pump TIF-1) (3x3 l.5MV A)

10 Markook LIS sis (16 MV A Station PTR-11) and

220ill TSTRANSCO 256 Jun-21 (6x40 MV A Pump PTR- I to VI)

11 Markook LIS sis (Station PTR-1) 220/11 TSTRANSCO 16 Jun-21

12 Mupkal LIS sis (TIF-1 and II) (2x60 MV A) 220/11 TSTRANSCO 120 Jun-21

13 Kothur s/s (2x160 MVA) 220/132 TSTRANSCO 320 Jun-21

14 Akkararn LIS sis (Aug) (Pump TIF-II to VI)

220/11 TSTRANSCO 158 Jun-21 (5x3 l.5MV A)

15 Chanchalguda GIS (3x50 MVA) 220i33 TSTRANSCO 150 Jun-21

16 Akiveedu S/S at West Godavari Dist. 220i33 APTRANSCO 80 Mav-21

17 Vemaoiri (ICT-4) 400i220 APTRANSCO 500 Apr-21

18 TNEB Head Quarters 230i33 TANTRANSCO 200 Apr-21

19 Gadag (Addl.- TIF) 220/110 KPTCL 100 Apr-21

20 Mvlasandra GIS (Near Electronic citv) 400i220 KPTCL 1500 Mar-21

21 Villupurarn (2xl00 to 2xl60) (GEC-1) 230/110 TANTRANSCO 60 Mar-21

22 Pvdibhimavararn SiS 220/132 APTRANSCO 300 Mar-21

23 Tirumalavapalli 220/132 APTRANSCO 300 Mar-21

24 T. Gollahalli (Thimmansandra) SiS 220i66 KPTCL 200 Mar-21

Upgradation of the existing 220/1 lKV Lift

25 Irrigation SiS to Rarnavararn at East Godavari 220/132i33 APTRANSCO 200 Mar-21

District

26 Banswada 220/132 TSTRANSCO 200 Mar-21

27 He�mmie (Mandarthi) SiS 220ill0 KPTCL 200 Mar-21

28 Mue:halkod SiS ( GEC-1) 220ill0 KPTCL 200 Mar-21

29 Chakravaoet 220/132 APTRANSCO 200 Mar-21

30 Gollaourarn 220/132 APTRANSCO 200 Mar-21

31 Singarapet 230ill0 TANTRANSCO 100 Feb-21

32 Shenbagapudur 230ill0 TANTRANSCO 200 Feb-21

33 Simhachalarn 220/132 APTRANSCO 200 Feb-21

34 RS Gootv at Anantapurarn District (Aug.) 220/132 APTRANSCO 60 Feb-21

35 Nuziveedu at Guntur Dist. (Aug) 220/132 APTRANSCO 60 Feb-21

36 Karnavarapukota at West Godavarai District

220/132 APTRANSCO 160 Feb-21 (Aug.)

37 Aluva 220/110 KSEB 400 Feb-21

38 Tadikonda at (Guntur District (Aug)) 220/132 APTRANSCO 50 Feb-21

39 Mara dam ( Addi I CT) 400i220 APTRANSCO 500 Jan-21

40 Karaikudi (Enhancement from 50 MV A to 100

230/110 TANTRANSCO 50 Jan-21 MVA)

41 Kaloor /TIF-11) 220ill0 KSEB 160 Jan-21

42 Somanahalli TIF-II Aug /lxl50 - lxl00) 220i66 KPTCL 50 Jan-21

43 Thallak (Aug) 220i66 KPTCL 100 Jan-21

44 Chikkodi (Aug) 220ill0 KPTCL 100 Jan-21

45 Podili (3rd JCT)) 400i220 APTRANSCO 315 Dec-20

46 Rachaganneri (TIF-11) 400i220/132 APTRANSCO 315 Dec-20

47 Chalakudv SiS 220/110 KSEB 200 Dec-20

48 Kaloor /TIF-1) 220/110 KSEB 160 Dec-20

49 Podili /2nd !CT)) 400i220 APTRANSCO 315 Nov-20

50 Rachaganneri /TIF-1) 400i220/132 APTRANSCO 315 Nov-20

51 Kotharnangalarn /TIF-m 220/110 KSEB 100 Nov-20

52 Sarnavanallur SiS 230/110 TANTRANSCO 200 Oct-20

53 Somanahalli TIF-1 Aug /lxl50 - lxl00) 220i66 KPTCL 50 Oct-20

54 Kotharnangalarn /T IF-I) 220/110 KSEB 100 Oct-20

55 Devanahalli /Hardware Park) 400i220 KPTCL 1000 Seo-20

56 Manieri sis 220/110 KSEB 200 Seo-20

57 Kararnadai /3rd Auto TIF) 230/110 TANTRANSCO 100 Aug-20

58 Bagalkot / Addi T IF) 220/110 KPTCL 100 Aug-20

59 Sankarapurarn SiS 230/110 TANTRANSCO 100 Jul-20

60 Begur 220i66 KPTCL 200 Jul-20

61 Tiruour /JICA) 230/110 TANTRANSCO 100 Jun-20

62 Kudlici /Badeladaku) SiS 220i66 KPTCL 200 Mav-20 Total of State Sector 12162

-

No.1 §/3/2018-Tra,ns-Pl(S) Government of India

Ministry of Power Shram Shakti Bhawan. Rafi Marg. New Delhi

Dated. the 20th May 2021 OFFICE ORDER

Annex-4

Subject: - National Committee on Transmission (NC,T)- amendment thereof.

In continuation of this Ministris Office order no. 15/312017-Trans dated 04.11.2019 regarding constltlltion of the National Com.mittee on Transmission (NCT). following amendments are hereby ordered with immediate effect

a) CMO, POSOCO will be a member of NCT.b) The following functions would be added to the Terms of Reference of NCT:

(i) To formulate the packages for the transmission schemes for theirimplementation and to recommend their mode of implementation i.e.Tariff Based Competitive Bidding (TBCB) / Regulated Tariff Mechanism(RTM), as per the existing Tariff Policy, to Ministry of Power.

(ii) To examine the cost of the transmission schemes .. (iii) To altocate the task of carrying out survey amongst CTU, RECTPCL and

PFCCL by maintaining a roster.

2. Further, NCT, while considering the Transmission Planning shall also keep inmind the following aspeets:

(i) ,:he Regional Power Committees (Transmission Planning) caw makemeaningful recommendations only regarding their own Region. They cannofoecide on transfers across region. '. _,..

(ii) For enabling growth of Renewable Energy (RE) capacity areas which have highsolar/ wind energy potential, will need to be identified and connected to bulkpower evacuation systems sp that capacity can come up there. This is anational mission as a part of our energy transition goal.

3. This issues with the approval of the Hon'ble Minister of State (IndependentCharge) for Power and New & Renewable Energy and Minister of State for SkfflDevelopment and Entrepreneurship ..

To {i) All Members of NCT.

(Biha Under Secretary to the Govt of India

Telefax; 23325242 Email: [email protected]

fti) Secretary. Ministry of New & Renewable Energy, Govt of India. (iii) Chaiq:,erson, CEA. New Delhi.(iv) CMD, POSOCO, New Oelhi(v) CMOs of all CPSEs under the Ministry of Power. Govt of India.

11111

(Vi) (vii) (Viii) (ix). (x)

-�-

H8cld$ of all autonomous bodies under the Ministry of Power. Finance/ Section. Ministry of

.

Chief Exect.flwes of all State Power Transmission Utilities. CEO. NITt Aayog, New Deihl.

Copy to;

of India.

(I) PS to Hon'ble MoSP(lC}I Sr PPS/ PP$/ PS to Secretaty(Power}I AS&FN AS{SKGR)I A.S(VKO)I au Jomt Secretaries/ Sr. A<trisOr/ Chief Engineer(Th)/ alt Directors/ Dy. Seaetaries, Ministry of Power.

(ii) Technical Director, NIC. Mio Power, for publishing this order on ttte website ofMio Power.

PTI INTERACTIVE POWER SYSTEM SIMULATOR--PSS(R)E MON, MAY 31 2021 14:40 Of ZONE TOTALS

IN MW/MVAR FROM ------AT ZONE BUSES------- TO -NET INTERCHANGE-

GENE- FROM IND TO IND TO TO BUS GNE BUS TO LINE FROM TO TO TIE TO TIES X-- ZONE --X RATION GENERATN MOTORS LOAD SHUNT DEVICES SHUNT CHARGING LOSSES LINES + LOADS

50 8119.0 0.0 0.0 12791.5 0.0 0.0 0.0 0.0 427.1 -5099.7 -5099.7 ANDHRA 1096.1 0.0 0.0 2597.4 5956.8 0.0 9765.7 22636.5 5817.0 -404.3 -404.3

51 10233.6 0.0 0.0 15931.1 0.0 0.0 198.2 0.0 400.9 -6296.5 -6296.5 TELANGANA 3383.5 0.0 0.0 3256.6 5555.1 0.0 3344.9 13637.6 6056.4 -1191.9 -1191.9

52 9802.0 0.0 0.0 16323.6 0.0 0.0 0.0 0.0 662.8 -7184.4 -7184.4 KARNATKA 1201.5 0.0 0.0 3330.6 2039.7 0.0 2959.6 13579.8 7359.2 -907.7 -907.7

53 391.0 0.0 0.0 5824.5 0.0 0.0 0.0 0.0 345.5 -5779.0 -5779.0 KERALA 939.3 0.0 0.0 1188.3 -829.0 0.0 357.3 2102.1 2997.7 -673.0 -673.0

54 11249.9 0.0 0.0 22763.0 0.0 0.0 0.0 0.0 781.4 -12294.5 -12294.5 TAMILNAD 2319.4 0.0 0.0 4622.2 2240.4 0.0 8491.2 22665.7 9052.9 578.4 578.4

55 9900.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 15.3 9884.7 9884.7 CENTRAL SECT 1772.6 0.0 0.0 0.0 1189.3 0.0 293.4 1019.4 208.6 1100.7 1100.7

57 0.0 0.0 0.0 568.3 0.0 0.0 0.0 0.0 3.6 -571.9 -571.9 PONDY 0.0 0.0 0.0 115.4 0.0 0.0 0.0 13.1 18.2 -120.5 -120.5

58 9051.3 0.0 0.0 0.0 0.0 0.0 0.0 0.0 19.9 9031.4 9031.4 ISTS-IPP 1427.5 0.0 0.0 0.0 1420.7 0.0 117.3 2068.8 240.4 1718.0 1718.0

COLUMN 58746.8 0.0 0.0 74202.1 0.0 0.0 198.2 0.0 2656.4 -18309.8 -18309.8 TOTALS 12139.9 0.0 0.0 15110.6 17573.1 0.0 25329.4 77723.0 31750.3 99.7 99.7

PTI INTERACTIVE POWER SYSTEM SIMULATOR--PSS(R)E MON, MAY 31 2021 13:39

OUTPUT FOR AREA 5 [SOUTH ] ZONE 52 [KARNATKA ] SUBSYSTEM LOADING CHECK (INCLUDED: TRANSFORMERS) (EXCLUDED: LINES; BREAKERS AND SWITCHES) MVA LOADINGS ABOVE 40.0 % OF RATING SET A:

X--------- FROM BUS ----------X X---------- TO BUS -----------X BUS# X-- NAME --X BASKV AREA BUS# X-- NAME --X BASKV AREA CKT LOADING RATING PERCENT

522001 SMNH 220.00 5 524001 SMNH 400.00* 5 1 229.0 500.0 45.8 522001 SMNH 220.00 5 524001 SMNH 400.00* 5 2 229.0 500.0 45.8 522001 SMNH 220.00 5 524001 SMNH 400.00* 5 3 229.0 500.0 45.8 522004 GUTTUR 220.00 5 524004 DAVAN4 400.00* 5 1 227.2 315.0 72.1 522004 GUTTUR 220.00 5 524004 DAVAN4 400.00* 5 2 227.2 315.0 72.1 522005 HOOD 220.00 5 524005 HOODI4 400.00* 5 1 269.4 500.0 53.9 522005 HOOD 220.00 5 524005 HOODI4 400.00* 5 2 269.4 500.0 53.9 522005 HOOD 220.00 5 524005 HOODI4 400.00* 5 3 269.4 500.0 53.9 522010 MYSORE2 220.00 5 524010 MYSORE4 400.00* 5 1 297.8 500.0 59.6 522010 MYSORE2 220.00 5 524010 MYSORE4 400.00* 5 2 187.7 315.0 59.6 522010 MYSORE2 220.00 5 524010 MYSORE4 400.00* 5 3 187.7 315.0 59.6 522011 KOLR 220.00 5 524011 KOLAR 400.00* 5 1 210.3 500.0 42.1 522011 KOLR 220.00 5 524011 KOLAR 400.00* 5 2 210.3 500.0 42.1 522035 MYLSNDRA220 220.00 5 524035 MYLSNDRA 400.00* 5 1 231.7 500.0 46.3 522035 MYLSNDRA220 220.00 5 524035 MYLSNDRA 400.00* 5 2 231.7 500.0 46.3 522035 MYLSNDRA220 220.00 5 524035 MYLSNDRA 400.00* 5 3 231.7 500.0 46.3 522047 NARENDRA 220.00* 5 524047 NAREND-4 400.00 5 1 282.6 500.0 56.5 522047 NARENDRA 220.00* 5 524047 NAREND-4 400.00 5 2 282.6 500.0 56.5 522084 YELAH220 220.00 5 524084 YELAHNKA 400.00* 5 1 203.0 500.0 40.6 522084 YELAH220 220.00 5 524084 YELAHNKA 400.00* 5 2 203.0 500.0 40.6 522106 KADKOLA 220.00 5 524106 KADAKOLA 400.00* 5 1 267.5 500.0 53.5 522106 KADKOLA 220.00 5 524106 KADAKOLA 400.00* 5 2 267.5 500.0 53.5 522158 JAGALUR2 220.00 5 524050 JAGALUR4 400.00* 5 1 221.0 500.0 44.2

522158 JAGALUR2 220.00 5 524050 JAGALUR4 400.00* 5 2 221.0 500.0 44.2 522363 PENYA22 220.00 5 524169 PEENYA4 400.00* 5 1 330.5 500.0 66.1 522363 PENYA22 220.00 5 524169 PEENYA4 400.00* 5 2 330.5 500.0 66.1 523025 DHALLI 220.00 5 524025 DHANLLI 400.00* 5 1 318.0 500.0 63.6 523025 DHALLI 220.00 5 524025 DHANLLI 400.00* 5 2 318.0 500.0 63.6 523025 DHALLI 220.00 5 524025 DHANLLI 400.00* 5 3 318.0 500.0 63.6 523040 DOMSNDRA22 220.00 5 524171 DOMSANDRA 400.00* 5 1 291.0 500.0 58.2 523040 DOMSNDRA22 220.00 5 524171 DOMSANDRA 400.00* 5 2 291.0 500.0 58.2


OUTPUT FOR AREA 5 [SOUTH ] ZONE 50 [ANDHRA ] SUBSYSTEM LOADING CHECK (INCLUDED: TRANSFORMERS) (EXCLUDED: LINES; BREAKERS AND SWITCHES) MVA LOADINGS ABOVE 40.0 % OF RATING SET A:

X--------- FROM BUS ----------X X---------- TO BUS -----------X

502006 VIZAGSS-PG 220.00 5 504006 GAZW 400.00* 5 1 136.3 315.0 43.3 502006 VIZAGSS-PG 220.00 5 504006 GAZW 400.00* 5 2 136.3 315.0 43.3 502006 VIZAGSS-PG 220.00 5 504006 GAZW 400.00* 5 3 216.4 500.0 43.3 502013 KURNOOL 220.00 5 504013 KURNOOL4 400.00* 5 1 228.3 315.0 72.5 502013 KURNOOL 220.00 5 504013 KURNOOL4 400.00* 5 2 228.3 315.0 72.5 502013 KURNOOL 220.00* 5 504013 KURNOOL4 400.00 5 3 227.9 315.0 72.3 502014 GUDDIGUDEM 220.00 5 504040 GUDDIGUDEM 400.00* 5 1 281.7 500.0 56.3 502014 GUDDIGUDEM 220.00 5 504040 GUDDIGUDEM 400.00* 5 2 281.7 500.0 56.3 502014 GUDDIGUDEM 220.00 5 504040 GUDDIGUDEM 400.00* 5 3 281.7 500.0 56.3 502016 VZG 220.00 5 504016 VIZPOOL 400.00* 5 1 136.3 315.0 43.3 502016 VZG 220.00 5 504016 VIZPOOL 400.00* 5 2 136.3 315.0 43.3 502016 VZG 220.00 5 504016 VIZPOOL 400.00* 5 3 136.3 315.0 43.3 502016 VZG 220.00 5 504016 VIZPOOL 400.00* 5 4 216.4 500.0 43.3 502017 VEMAGIRI 220.00 5 504017 VEMAGIR4 400.00* 5 1 216.1 315.0 68.6 502017 VEMAGIRI 220.00 5 504017 VEMAGIR4 400.00* 5 2 216.1 315.0 68.6 502017 VEMAGIRI 220.00 5 504017 VEMAGIR4 400.00* 5 3 216.1 315.0 68.6 502017 VEMAGIRI 220.00 5 504017 VEMAGIR4 400.00* 5 4 343.0 500.0 68.6 502019 NELLORE2 220.00 5 504103 NELLORE-AP 400.00* 5 1 212.1 315.0 67.3 502019 NELLORE2 220.00 5 504103 NELLORE-AP 400.00* 5 2 212.1 315.0 67.3 502019 NELLORE2 220.00 5 504103 NELLORE-AP 400.00* 5 3 212.1 315.0 67.3 502019 NELLORE2 220.00 5 504103 NELLORE-AP 400.00* 5 4 336.9 500.0 67.4 502026 CHITTORNEW 220.00 5 504024 CHITOR 400.00* 5 1 138.9 315.0 44.1 502026 CHITTORNEW 220.00 5 504024 CHITOR 400.00* 5 2 138.9 315.0 44.1 502026 CHITTORNEW 220.00 5 504024 CHITOR 400.00* 5 3 138.9 315.0 44.1 502029 RACHAGUNNERI220.00 5 504035 RACHAGUNNERI400.00* 5 1 241.9 315.0 76.8 502029 RACHAGUNNERI220.00 5 504035 RACHAGUNNERI400.00* 5 2 241.9 315.0 76.8 502039 GARIVIDI1 220.00 5 504039 GARIVIDI 400.00* 5 1 192.2 315.0 61.0 502039 GARIVIDI1 220.00 5 504039 GARIVIDI 400.00* 5 2 192.2 315.0 61.0 502039 GARIVIDI1 220.00 5 504039 GARIVIDI 400.00* 5 3 305.2 500.0 61.0 502217 CHILAKALURI7220.00 5 504404 CPETA-AP 400.00* 5 1 133.8 315.0 42.5 502217 CHILAKALURI7220.00 5 504404 CPETA-AP 400.00* 5 2 133.8 315.0 42.5 502283 ACHUTHAPARAM220.00 5 504048 ACHUTHAPURAM400.00* 5 1 237.2 500.0 47.4 502283 ACHUTHAPARAM220.00 5 504048 ACHUTHAPURAM400.00* 5 2 237.2 500.0 47.4 502284 KAKINADASEZ 220.00 5 504084 KAKINADA SEZ400.00* 5 1 503.2 500.0 100.6 502284 KAKINADASEZ 220.00 5 504084 KAKINADA SEZ400.00* 5 2 503.2 500.0 100.6 504092 VEMAG-II 400.00* 5 508092 VEM-II80 765.00 5 1 840.2 1500.0 56.0 504092 VEMAG-II 400.00* 5 508092 VEM-II80 765.00 5 2 840.2 1500.0 56.0 504099 CPETA400 400.00* 5 508099 CPETA800 765.00 5 1 623.3 1500.0 41.6 504099 CPETA400 400.00* 5 508099 CPETA800 765.00 5 2 623.3 1500.0 41.6


OUTPUT FOR AREA 5 [SOUTH ] ZONE 51 [TELANGANA ] SUBSYSTEM LOADING CHECK (INCLUDED: TRANSFORMERS) (EXCLUDED: LINES; BREAKERS AND SWITCHES) MVA LOADINGS ABOVE 40.0 % OF RATING SET B:

X--------- FROM BUS ----------X X---------- TO BUS -----------X

512002 HYD PGCIL 220.00 5 514002 HYDERABAD 400.00* 5 1 187.8 315.0 59.6 512002 HYD PGCIL 220.00 5 514002 HYDERABAD 400.00* 5 2 187.8 315.0 59.6 512002 HYD PGCIL 220.00 5 514002 HYDERABAD 400.00* 5 3 187.8 315.0 59.6 512002 HYD PGCIL 220.00 5 514002 HYDERABAD 400.00* 5 4 298.0 500.0 59.6 512011 HYD TS 220.00 5 514012 HYDERABAD-TS400.00* 5 1 191.9 315.0 60.9 512011 HYD TS 220.00 5 514012 HYDERABAD-TS400.00* 5 2 191.9 315.0 60.9 512011 HYD TS 220.00 5 514012 HYDERABAD-TS400.00* 5 3 191.9 315.0 60.9 512011 HYD TS 220.00 5 514012 HYDERABAD-TS400.00* 5 4 191.9 315.0 60.9 512014 DICHIPALLI 220.00 5 514021 DICHPAL4 400.00* 5 1 228.8 315.0 72.6 512014 DICHIPALLI 220.00 5 514021 DICHPAL4 400.00* 5 2 228.8 315.0 72.6 512014 DICHIPALLI 220.00 5 514021 DICHPAL4 400.00* 5 3 228.8 315.0 72.6 512015 GAJWEL2 220.00 5 514022 GAJWEL4 400.00* 5 1 208.6 315.0 66.2 512015 GAJWEL2 220.00 5 514022 GAJWEL4 400.00* 5 2 208.6 315.0 66.2 512015 GAJWEL2 220.00 5 514022 GAJWEL4 400.00* 5 3 208.6 315.0 66.2 512015 GAJWEL2 220.00 5 514022 GAJWEL4 400.00* 5 4 331.0 500.0 66.2 512020 RAMADUGU 220.00 5 514105 RAMADAGU LI 400.00* 5 1 240.3 500.0 48.1 512020 RAMADUGU 220.00 5 514105 RAMADAGU LI 400.00* 5 2 240.3 500.0 48.1 512029 SHANKARPALLY220.00 5 514051 MAILARM4 400.00* 5 1 152.9 315.0 48.5 512029 SHANKARPALLY220.00 5 514051 MAILARM4 400.00* 5 2 152.9 315.0 48.5 512029 SHANKARPALLY220.00 5 514051 MAILARM4 400.00* 5 3 152.9 315.0 48.5 512029 SHANKARPALLY220.00 5 514051 MAILARM4 400.00* 5 4 242.7 500.0 48.5 512030 MALKARAM 220.00 5 514052 MALKARM4 400.00* 5 1 158.8 315.0 50.4 512030 MALKARAM 220.00 5 514052 MALKARM4 400.00* 5 2 158.8 315.0 50.4 512030 MALKARAM 220.00 5 514052 MALKARM4 400.00* 5 3 158.8 315.0 50.4 512030 MALKARAM 220.00 5 514052 MALKARM4 400.00* 5 4 252.0 500.0 50.4 512051 NIRMAL 220.00 5 514062 NIRMAL 400.00* 5 1 171.4 315.0 54.4 512051 NIRMAL 220.00 5 514062 NIRMAL 400.00* 5 2 171.4 315.0 54.4 512051 NIRMAL 220.00 5 514062 NIRMAL 400.00* 5 3 171.4 315.0 54.4 512056 OGLAPUR PGCI220.00 5 514079 WARN4 400.00* 5 1 194.9 315.0 61.9 512056 OGLAPUR PGCI220.00 5 514079 WARN4 400.00* 5 2 194.9 315.0 61.9 512056 OGLAPUR PGCI220.00 5 514079 WARN4 400.00* 5 3 309.3 500.0 61.9 512069 JULURUPADU 220.00 5 514095 JULURUPADU 400.00* 5 1 146.1 315.0 46.4 512069 JULURUPADU 220.00 5 514095 JULURUPADU 400.00* 5 2 146.1 315.0 46.4 512078 NARSAPUR2 220.00 5 514100 NARSAPUR 400.00* 5 1 251.4 315.0 79.8 512078 NARSAPUR2 220.00 5 514100 NARSAPUR 400.00* 5 2 251.4 315.0 79.8 512082 MAHESH-TS2 220.00 5 514104 MAHESH-TS 400.00* 5 1 326.3 500.0 65.3 512082 MAHESH-TS2 220.00 5 514104 MAHESH-TS 400.00* 5 2 326.3 500.0 65.3 512100 KETHIREDDYPA220.00 5 514131 MANIKONDA 400.00* 5 1 133.3 315.0 42.3 512100 KETHIREDDYPA220.00 5 514131 MANIKONDA 400.00* 5 2 133.3 315.0 42.3 512118 RAIDURG 220.00* 5 514068 RAIDURG 400.00 5 1 220.1 500.0 44.0 512118 RAIDURG 220.00* 5 514068 RAIDURG 400.00 5 2 220.1 500.0 44.0 512131 DINDI 220.00* 5 514152 DINDI 400.00 5 1 247.3 500.0 49.5 512131 DINDI 220.00* 5 514152 DINDI 400.00 5 2 247.3 500.0 49.5 512131 DINDI 220.00* 5 514152 DINDI 400.00 5 3 247.3 500.0 49.5 512148 JANGAON 220.00 5 514165 JANAGAON 400.00* 5 1 269.4 500.0 53.9 512148 JANGAON 220.00 5 514165 JANAGAON 400.00* 5 2 269.4 500.0 53.9 512148 JANGAON 220.00 5 514165 JANAGAON 400.00* 5 3 269.4 500.0 53.9 512153 CHOUTTUPPAL 220.00 5 514170 CHOUTTUPPAL 400.00* 5 1 278.2 500.0 55.6 512153 CHOUTTUPPAL 220.00 5 514170 CHOUTTUPPAL 400.00* 5 2 278.2 500.0 55.6 512198 KOTH V 220.00* 5 514049 KOTH-IV 400.00 5 1 145.5 315.0 46.2 512231 DAMARACHRLA 220.00 5 514072 DAMARACHRLA 400.00* 5 2 379.2 500.0 75.8 512231 DAMARACHRLA 220.00 5 514072 DAMARACHRLA 400.00* 5 3 379.2 500.0 75.8 512242 KTPP 220.00 5 514029 KAKTIA-G 400.00* 5 1 252.7 500.0 50.5 512242 KTPP 220.00 5 514029 KAKTIA-G 400.00* 5 2 252.7 500.0 50.5 512250 MANG4/2 220.00* 5 514134 MANUGURU 400.00 5 1 158.1 315.0 50.2 514061 NIZAMABAD 400.00* 5 518062 NIZAMABAD 765.00 5 1 1102.3 1500.0 73.5 514061 NIZAMABAD 400.00* 5 518062 NIZAMABAD 765.00 5 2 1102.3 1500.0 73.5 514101 MAHESWRM 400.00 5 518051 HYDR_800 765.00* 5 1 873.2 1500.0 58.2 514101 MAHESWRM 400.00 5 518051 HYDR_800 765.00* 5 2 873.2 1500.0 58.2


OUTPUT FOR AREA 5 [SOUTH ] ZONE 54 [TAMILNAD ] SUBSYSTEM LOADING CHECK (INCLUDED: TRANSFORMERS) (EXCLUDED: LINES; BREAKERS AND SWITCHES)

MVA LOADINGS ABOVE 40.0 % OF RATING SET A:

X--------- FROM BUS ----------X X---------- TO BUS -----------X BUS# X-- NAME --X BASKV AREA BUS# X-- NAME --X BASKV AREA CKT LOADING RATING

PERCENT 540506 SALEM41 110.00 5 544003 SALE 400.00* 5 1 184.3 200.0 92.2 540506 SALEM41 110.00 5 544003 SALE 400.00* 5 2 184.3 200.0 92.2 540506 SALEM41 110.00 5 544003 SALE 400.00* 5 3 184.3 200.0 92.2 540510 SPBUDR41 110.00 5 544002 MADRAS 400.00* 5 1 166.6 200.0 83.3 540510 SPBUDR41 110.00 5 544002 MADRAS 400.00* 5 2 166.6 200.0 83.3 540514 KORATR21 110.00 5 544035 KORATUR4 400.00* 5 1 113.1 200.0 56.5 540514 KORATR21 110.00 5 544035 KORATUR4 400.00* 5 2 113.1 200.0 56.5 540524 MANALI21 110.00 5 544040 MANALI4 400.00* 5 1 101.0 200.0 50.5 540524 MANALI21 110.00 5 544040 MANALI4 400.00* 5 2 101.0 200.0 50.5 540709 TARAMA21 110.00 5 544015 TARAMANI4 400.00* 5 1 133.1 200.0 66.5 540709 TARAMA21 110.00 5 544015 TARAMANI4 400.00* 5 2 133.1 200.0 66.5 540974 ALAMTY41 110.00 5 544022 ALMATI4 400.00* 5 1 90.6 200.0 45.3 540974 ALAMTY41 110.00 5 544022 ALMATI4 400.00* 5 2 90.6 200.0 45.3 540974 ALAMTY41 110.00 5 544022 ALMATI4 400.00* 5 3 90.6 200.0 45.3 541308 SVCTAM41 110.00 5 544090 SVCHTRM 400.00* 5 1 92.5 200.0 46.2 541308 SVCTAM41 110.00 5 544090 SVCHTRM 400.00* 5 2 92.5 200.0 46.2 541407 TIRUVAM SE-C110.00* 5 544085 TIRUVLM SE-C400.00 5 1 120.1 200.0 60.0 541407 TIRUVAM SE-C110.00* 5 544085 TIRUVLM SE-C400.00 5 2 120.1 200.0 60.0 541441 SHOLNG41 110.00 5 544091 SHOLNGNR 400.00* 5 1 131.8 200.0 65.9 541506 EDAYARPYM41 110.00* 5 544122 EDARPLYM 400.00 5 1 227.0 200.0 113.5 541506 EDAYARPYM41 110.00* 5 544122 EDARPLYM 400.00 5 2 227.0 200.0 113.5 541506 EDAYARPYM41 110.00* 5 544122 EDARPLYM 400.00 5 3 227.0 200.0 113.5 541507 PALAVADY41 110.00 5 544151 PALAVADI4 400.00* 5 1 111.6 200.0 55.8 541507 PALAVADY41 110.00 5 544151 PALAVADI4 400.00* 5 2 111.6 200.0 55.8 541512 KAMUDHI41 110.00 5 544132 KAMUTHI4 400.00* 5 1 91.6 200.0 45.8 541512 KAMUDHI41 110.00 5 544132 KAMUTHI4 400.00* 5 2 91.6 200.0 45.8 541523 VELALVDTHI41110.00* 5 544063 VELALAVIDU 400.00 5 1 148.8 200.0 74.4 541523 VELALVDTHI41110.00* 5 544063 VELALAVIDU 400.00 5 2 148.8 200.0 74.4 541541 OTAPIDRM41 110.00 5 544165 OTTAPIDARAM 400.00* 5 1 104.0 200.0 52.0 541541 OTAPIDRM41 110.00 5 544165 OTTAPIDARAM 400.00* 5 2 104.0 200.0 52.0 542025 SALEM42 230.00* 5 544003 SALE 400.00 5 1 184.0 315.0 58.4 542025 SALEM42 230.00* 5 544003 SALE 400.00 5 2 184.0 315.0 58.4 542025 SALEM42 230.00* 5 544003 SALE 400.00 5 3 184.0 315.0 58.4 542030 MYVADY42 230.00* 5 544006 UDMP 400.00 5 1 161.8 315.0 51.4 542030 MYVADY42 230.00* 5 544006 UDMP 400.00 5 2 161.8 315.0 51.4 542030 MYVADY42 230.00* 5 544006 UDMP 400.00 5 3 161.8 315.0 51.4 542050 SPBUDUR2 230.00 5 544002 MADRAS 400.00* 5 1 146.1 315.0 46.4 542050 SPBUDUR2 230.00 5 544002 MADRAS 400.00* 5 2 146.1 315.0 46.4 542050 SPBUDUR2 230.00 5 544002 MADRAS 400.00* 5 3 146.1 315.0 46.4 542076 HOSUR42 230.00* 5 544007 HOSUR4 400.00 5 1 237.7 315.0 75.4 542076 HOSUR42 230.00* 5 544007 HOSUR4 400.00 5 2 237.7 315.0 75.4 542076 HOSUR42 230.00* 5 544007 HOSUR4 400.00 5 3 237.7 315.0 75.4 542094 PUGALR42 230.00* 5 544013 PUGALUR4 400.00 5 1 130.1 315.0 41.3 542094 PUGALR42 230.00* 5 544013 PUGALUR4 400.00 5 2 130.1 315.0 41.3 542094 PUGALR42 230.00* 5 544013 PUGALUR4 400.00 5 3 206.5 500.0 41.3 542099 MANGLAPURAM 230.00* 5 544036 MANGLAPURAM 400.00 5 1 231.4 500.0 46.3 542099 MANGLAPURAM 230.00* 5 544036 MANGLAPURAM 400.00 5 2 231.4 500.0 46.3 542107 ARASUR42 230.00 5 544014 ARSUR4 400.00* 5 1 155.9 315.0 49.5 542107 ARASUR42 230.00 5 544014 ARSUR4 400.00* 5 2 155.9 315.0 49.5 542107 ARASUR42 230.00 5 544014 ARSUR4 400.00* 5 3 247.4 500.0 49.5 542108 KARAMAD2 230.00 5 544092 KARMDAI 400.00* 5 1 153.3 315.0 48.7 542108 KARAMAD2 230.00 5 544092 KARMDAI 400.00* 5 2 153.3 315.0 48.7 542108 KARAMAD2 230.00 5 544092 KARMDAI 400.00* 5 3 153.3 315.0 48.7 542195 EDAYARPYM42 230.00* 5 544122 EDARPLYM 400.00 5 1 175.00 315.0 64.9 542195 EDAYARPYM42 230.00* 5 544122 EDARPLYM 400.00 5 1 175.00 315.0 64.9 542195 EDAYARPYM42 230.00* 5 544122 EDARPLYM 400.00 5 1 175.00 315.0 64.9 542207 ARIYALUR42 230.00* 5 544127 ARIYALUR4 400.00 5 1 332.9 500.0 66.6 542207 ARIYALUR42 230.00* 5 544127 ARIYALUR4 400.00 5 2 332.9 500.0 66.6 542222 MANALMEDU42 230.00* 5 544030 MANALMEDU4 400.00 5 3 434.0 500.0 86.8 542222 MANALMEDU42 230.00* 5 544030 MANALMEDU4 400.00 5 4 434.0 500.0 86.8 542224 PARALI42 230.00* 5 545002 PARALI4 400.00 5 1 157.7 315.0 50.1 542224 PARALI42 230.00* 5 545002 PARALI4 400.00 5 2 157.7 315.0 50.1

542225 KOYAMBEDU42 230.00 5 544019 KOYAMBEDU4 400.00* 5 1 146.7 315.0 46.6 542225 KOYAMBEDU42 230.00 5 544019 KOYAMBEDU4 400.00* 5 2 146.7 315.0 46.6 544127 ARIYALUR4 400.00* 5 548127 ARIYALUR7 765.00 5 1 1237.1 1500.0 82.5 544127 ARIYALUR4 400.00* 5 548127 ARIYALUR7 765.00 5 2 1237.1 1500.0 82.5


OUTPUT FOR AREA 5 [SOUTH ] ZONE 53 [KERALA ] SUBSYSTEM LOADING CHECK (INCLUDED: TRANSFORMERS) (EXCLUDED: LINES; BREAKERS AND SWITCHES) MVA LOADINGS ABOVE 40.0 % OF RATING SET A:

BUS# X-- NAME --X BASKV AREA BUS# X-- NAME --X BASKV AREA CKT LOADING RATING PERCENT 532259 KOTTAYAM2 220.00* 5 534048 KOTTAYAM4 400.00 5 1 280.0 315.0 88.9 532259 KOTTAYAM2 220.00* 5 534048 KOTTAYAM4 400.00 5 2 280.0 315.0 88.9 532301 MADKTHRA2A 220.00 5 534302 MADKTHRA4B 400.00* 5 1 238.0 315.0 75.5 532302 MADKTHRA2B 220.00 5 534301 MADKTHRA4A 400.00* 5 1 238.0 315.0 75.5 532302 MADKTHRA2B 220.00 5 534301 MADKTHRA4A 400.00* 5 2 238.0 315.0 75.5 532951 TRIVDRUM2 220.00 5 534951 TRIVNDRM4 400.00* 5 1 226.3 315.0 71.9 532951 TRIVDRUM2 220.00 5 534951 TRIVNDRM4 400.00* 5 2 226.3 315.0 71.9 532951 TRIVDRUM2 220.00 5 534951 TRIVNDRM4 400.00* 5 3 226.3 315.0 71.9 532953 COCHIN2 220.00* 5 534000 COCHIN4 400.00 5 1 209.9 315.0 66.6 532953 COCHIN2 220.00* 5 534000 COCHIN4 400.00 5 2 209.9 315.0 66.6 532953 COCHIN2 220.00* 5 534000 COCHIN4 400.00 5 3 333.5 500.0 66.7 532954 ELAPPULY2 220.00 5 534041 ELAPULY4 400.00* 5 1 198.7 315.0 63.1 532954 ELAPPULY2 220.00 5 534041 ELAPULY4 400.00* 5 2 198.7 315.0 63.1 532955 KOZHIKOD2 220.00 5 534003 KOZIKODE4 400.00* 5 1 178.2 315.0 56.6 532955 KOZHIKOD2 220.00 5 534003 KOZIKODE4 400.00* 5 2 178.2 315.0 56.6 532955 KOZHIKOD2 220.00 5 534003 KOZIKODE4 400.00* 5 3 282.2 500.0 56.4 532956 KASRGODE2 220.00 5 534049 KASRGODE4 400.00* 5 1 263.3 315.0 83.6 532956 KASRGODE2 220.00 5 534049 KASRGODE4 400.00* 5 2 263.3 315.0 83.6

Annex-17

Discussion on probability of Commutation failures at Pugalur HVDC

with direct injection of RE power

aigarhA

R .

Consists of '3' Schemes Scheme-3

Scheme-1

6oooMW DC Power +BookV )

OH Line

$JI$ ine

�11� OH

!Jl! -BookV - -

,,,..- ,,I

,-' �

4ookV D/C Line

Arasur (60 Km)

OH Line

OH Line.

LILO of 4ookV D/C Line

Trichur AC Bus

4ookV D/C Line /4- :, Thiruvallam (390 Km)

4ookV D/C Line I �ugalur (Existing) (50 Km)

Scheme-2 (Total 1294 . Cid. Km)

I 4ookV D/C Line

• r� Edayarpalayam (57 Km)

400kV DIC line

Pugalur AC Bus

Udumalapet (90 Km)

Risk of Commutation Failure

• When RP800 HVDC link operates in forward power direction i.e. , Pugalur is actingas Inverter, the probability of commutation failure at Pugalur is high when the busvoltage dips by 10% to 15% of the nominal voltage, however HVDC will recoverfrom this commutation failures if the voltage dips are temporary (5 -10 Cycles).

Hence after connection of RE power the voltage limits at Pugalur bus shall be

maintained as per grid code.

• When RP800 HVDC link operates in reverse power direction i.e. , Pugalur acting asrectifier, the probability of commutation failure at Pugalur is very less due tohigher commutation margin.

• From the literature/case studies, it is found that connection of Pugalur-TrichurVSC link at Pugalur bus helps in reducing the number of commutation failures andbetter recovery from commutation failure. Also VSC HVDC is immune tocommutation failures for both the direction of VSC operation.

Commutation margin Rectifier operation

With firing angle (a) range of 12° to 17° , Rectifier has higher commutation margin

a+u+ Y=180 deg

Inverter operation

With typical value of extinction angle (Y) of 17° , Inverter has lower commutation margin ,

p

Other Technical Issues

• The following issues need to be taken care at the 400 kV RE injectionpoint for smooth operation of HVDC at Pugalur terminal:

• Harmonic limits shall be within the grid code defined limits

• Voltage fluctuations shall be within the grid code defined limits

• Frequency variations shall be within the grid code defined limits

• Voltage unbalance shall be less than 1 %

• At any point, the RE connected feeder shall not be the only inter-connectionto the Raigarh-Pugalur HVDC at Pugalur bus

• In future, in case any issues arises during RE integration, necessarycontrol & protection study and validation may be carried out.

Southern Regional Power Committee

Bengaluru

Minutes of the Special Meeting of SRPC

(held on 14th July 2021 through VC)

1. Introduction

1. 1 Central Transmission Utility of India Limited (CTUIL) vide letter dated O 1st

July 2021 has intimated that CERC vide Record of Proceeding (date of

hearing: 25.06.2021) in Petition No.200/MP/2019 has directed CTU to

coordinate with Secretariat of SRPC to hold the RPC meeting within 15 days

from the date of issuance of Record of Proceeding to discuss the

developments and implementation of the transmission scheme in phase-wise

manner with the constituents of Southern Region. CTU has also been directed

to file the minutes of the meeting within a week thereafter.

1.2 CTUIL has requested recommendation of SRPC to take up the

implementation of the transmission schemes in phase- wise manner for

integration of potential renewable capacity of Koppal (Karnataka ), Gadag

(Karnataka) and Karur (Tamil Nadu) REZs considering already granted

Stage-II connectivity/LTAs to various RE developers in Koppal, Gadag and

Karur REZs so that regulatory requirement can be fulfilled in a time bound

manner.

1.3 Accordingly, a Special Meeting of the Southern Regional Power Committee

(SRPC) was held on 14th

July 2021to discuss the developments and

implementation of Transmission scheme for integration of potential

Renewable energy zone of 18.5 GW Solar & Wind Energy Zones in Southern

Region (SR).

The meeting was chaired by Shri Rajesh Lakhoni Chairperson, SRPC

&CMD, T ANGEDCO. The list of participants is at Annexure-1.3.

2. Transmission scheme for integration of potential REZ of 18.5

GW in Southern Region

2.1 Central Transmission Utility of India Limited (CTUIL) vide letter dated 01 st

July 2021 (Annexure-2.1)has furnished agenda on the developments and

implementation of the transmission scheme in phase-wise manner for

discussion with the constituents of Southern Region as per the direction of

CERC vide Record of Proceeding (Date of hearing: 25.06.2021& Date of

issuance ofRoP: 29.06.2021) in Petition No.200/MP/2019.

Annex-18.1

2.2 The transmission scheme for integration of 18.5 GW REZ in Southern Region

was discussed in the 36th SPRC held on 12.07.2019 and 37th SPRC held on

01.02.2020 and 38th SPRC held on 23.12.2020.The details of prioritized SEZs

and WEZs in Southern region (totaling to 18,500 MW) considered by SRPC

in its meeting are as under:

Solar Wind Total

State/District Phase-I Phase-2 Phase-I Phase-2 (GW)

2020 2021 2020 2021

Andhra Pradesh

Kurnool 2.5 2 1 5.5

Ananthapuram 2.5 2.5

Karnataka

Koppal 2.5 2.5

Gadag 2.5 2.5

Bidar 2.5 2.5

TamilNadu

Karur 1.5 1 2.5

Tirunelveli 0.5 0.5

Total 2.5 7.5 6 2.5 18.5

2.3 In the 38th Meeting (23.12.2020) of SRPC the following had been noted:

(i) Transmission proposal for evacuation of 18.5 GW from SR had not been

approved by SRPC and Standing Committee so far. In the recent past,

witnessed huge redundant transmission capacity created due to mismatch

of generation-transmission projects resulting in huge financial burden to

TANGEDCO and other beneficiaries. In order to avert such scenario,

TANGEDCO had requested the forum to disapprove the present

proposal of CTU and evolve a new proposal based on the developable

RE Potential and the L TA commitment given by the RE generators duly

taking into consideration of the concerns, views and objections of

TANGEDCO and other Discoms.

(ii) CTU had informed that they had a meeting on 08.08.2020 with SECI

as per the directions of CERC. CTU Prioritized the transmission system

based on the availability of land and based on the availability of

generators and LT A. CTU stated in their affidavit that only Gadag

(solar) and Koppal (wind) pooling station (i.e. 5 GW) is prioritized

and balance system planned under 18.5GW was put on hold.

(iii) KPTCL had informed that Koppal was originally envisaged as Wind

Energy Zone and transmission scheme was evolved based on the studies.

Minutes of the Special Meeting ofSRPC (14.07.2021) Page 2 of 12

SECI has now proposed to develop Koppal as a SEZ, which requires

detailed study to ascertain the feasibility of the proposal along with

2500MW Solar generation at Gadag.

2.4 Transmission schemes for integration of 18.5GW were included as an agenda

for the 2nd

meeting of SRPC(TP) held on 01.10.2020. Due to paucity of time

agenda could not be discussed completely and the same would be discussed in

the next SRPC(TP) meeting. SRPC(TP) yet to discuss the transmission

system completely.

2.5 CTUIL has furnished the progress (after 38th

meeting of SRPC) in terms of

grant of Connectivity/ LTA at Koppal, Gadag, Karur and Tuticorin-II GIS

(refer items 6.3 to 6.5 of Annexure-2.1)

2.6 Deliberation:

(i) CTUIL presented the Transmission System associated with potential REZs in

Southern Region and informed the following (Presentation is at Annexure-

2.6.i.):

(a) During the 2nd

SRSCT meeting (10.06.2019), it was agreed that the

transmission schemes would be implemented consequent to grant of LT A

by CTU.

(b) Koppal REZ: 300 MW LTA has been granted with the beneficiaries in

NR, WR &ER. Additional 300 MW LT A has been agreed for grant with

the beneficiaries in NR, WR & ER.

Gadag REZ: 460 MW LTA has been agreed for grant with the

beneficiaries in NR, WR & ER.

Karur REZ: 100 MW LT A been granted with the beneficiaries in NR.

Tirunelveli/ Tuticorin REZ: 1100 MW LTA has been granted and 1000

MW is operationalized. In addition, LT A application for 540 MW

(Madhya Pradesh) has been received in June 2021 which would be

deliberated in the next L TA and Connectivity applications meeting to be

held in July 2021. With that the total L TA would be 1640MW for which

4th

ICT at Tuticorin-II shall be required.

( c) LT A Applicants had requested the start date for LT A is June/October

2022. With these stringent time lines, CTU had proposed that these

transmission schemes may be implemented within a short period of time.

Government of India has given to Bid Process Coordinator (BPC) for


implementation of these schemes in 18 months.

(d) As agreed in 4th NCT meeting held on 20.01.2021 & 28.01.2021, the

transmission scheme for Karur and Gadag REZ has been proposed to

SRPC for implementation in two phases for the LT A applications which

have been received. Transmission Schemes for Bidar, Kurnool &

Anantapur have been kept on hold and shall be taken up for

implementation along with LT A applications.

( e) The following transmission schemes have been proposed for

recommendation by SRPC:

1) Transmission Scheme for Evacuation of power from RE sources in

Koppal Wind Energy Zone (Karnataka) (2500MW) - Estimated

cost: Rs 647 Crores

(i) Establishment of 5x500 MV A, 400/220 kV pooling station

near Munirabad /suitable location in Koppal distt.

(ii) Koppal Pooling station - Narendra (New) 400 kV D/c Line

(with Quad Moose ACSR conductor)

(iii)Nine (9) Nos. of 220kV line bays for interconnection of wind

projects.

(iv)2x125 MV Ar,400kV bus reactor at Pooling station (near

Munirabad /suitable location in Koppal distt.)

(v) Space provision for future expansion

2) Transmission Scheme for Solar Energy Zone in Gadag (2500

MW), Karnataka - Part A- Estimated cost: Rs 551 Crores

1. Part-A, Phase-I (1000 MW):

(i) Establishment of 400/220 kV, 2x500 MV A Gadag PoolingStation

(ii) Gadag PS - Narendra (new) GIS PS 400 kV (high capacityequivalent to quad moose) DIC Line

(iii)400 kV GIS line bays at Narendra (new) for Gadag PS-Narendra (New) GIS PS 400 kV D/c line

(iv) 220 kV line bays for interconnection of solar projects ( 4 nos)

(v) lx125MV Ar (400 kV) bus reactor at Gadag PS

(vi)Space provision for future expansion & Phase -II


11. Part-A, Phase-II (1500 MW):

(i) Augmentation of 400/220 kV, 3x500 MV A Gadag PoolingStation

(ii) Gadag PS - Koppal PS 400 kV (high capacity equivalent toquad moose) DIC Line

(iii) 400 kV line bays at Koppal PS for Gadag PS- Koppal PS 400

kV D/c line

(iv) 220 kV line bays for interconnection of solar projects (four(4) nos)

Phase-II scheme is to be taken up only after receipt of LT A

applications beyond 1000 MW at Gadag or beyond 1500 MW at

Koppal

3) Transmission Scheme for Solar Energy Zone in Gadag (2500

MW), Karnataka - Part B - Estimated Cost of the scheme: Rs. 554

Crores.

(i) Upgradation of Narendra New to its rated voltage of 765kV

level along with 2x1500 MVA, 765/400kV ICTs and lx330

MV Ar Bus Reactor

(ii) Upgradation of Kolhapur (PG) to its rated voltage of 765kV

level along with 2xl 500 MV A transformer and lx330 MV Ar

Bus Reactor

(iii) Upgradation/charging of Narendra new - Kolhapur (PG) 765

kV D/c line (initially charged at 400 kV) to its rated voltage

of 765 kV along with lx330 MV Ar switchable Line Reactor

on Kolhapur (PG) end of each circuit

4) Transmission Scheme for Evacuation of power from RE sources in

Karur / Tiruppur Wind Energy Zone (Tamil Nadu) (2500 MW)

Estimated Cost of the scheme : Rs. 578 Crores

1. Phase-I (1000 MW):

(i) 400/220 kV, 2x500 MV A Karur Pooling Station

(ii) LILO of both circuits of Pugalur - Pugalur (HVDC) 400 kV

D/c line (with Quad Moose ACSR Conductor) at Karur PS

(iii) Four( 4) Nos. of 230 kV line bays for interconnection of wind

projects 2x125 MVAr, 400 kV Bus reactors at Karur PS

(iv) Space provision for future expansion &Ph-II


11. Phase-II (1500MW):

(i) Augmentation of 3x500 MV A, 400/230 kV at Karur PS

(ii) Five (5) Nos. of 230 kV line bays for interconnection of wind

projects Phase-II scheme is to be taken up only after receipt of

L TA applications beyond 1000 MW at Karur

5) Evacuation of RE in Tirunelveli and Tuticorin Wind Energy Zone

(Tamil Nadu) (500 MW) - Estimated Cost of the scheme: Rs. 37

Crores.

(i) Addition of lx500 MV A, 400/230kV ICTs ( 4th) at Tuticorin-II

GIS sub-station

(ii) Chairperson, SRPC and CMD, TANGEDCO stated that as per CERC

Sharing Regulations 2020, the transmission charges needed to be borne by

the local DISCOMs/states. The schemes were not recommended by SRPC as

they are under discussion by SRPC and also by SRPC (TP). CTU had gone

to NCT and got it approved. In future CTU may avoid such actions. After

implementation of CERC Sharing Regulations 2020 w.e.f November 2020

the whole gambit has been changed. The investment made for developing

transmission schemes shall be borne by all the states/DISCOMs. Sufficient

time should be given to the states for analysing the redundancy / adequacy of

the investment.

(iii) APTRANSCO enquired about the study on the impact of the proposed

transmission schemes on the existing wind generation. Whenever new

addition is taking place nearby locations, existing generation may be

affected. Earlier, lot of generation had been planned at East coast and West

coast of Andhra Pradesh and transmission evacuations had been

implemented accordingly and transmission charges are imposed on the

states. Even though the schemes were implemented under augmentation

scheme, Andhra Pradesh was severely affected. With the implementation of

CERC Sharing Regulations 2020 w.e.f November 2020, some relief had

been there for Andhra Pradesh but it is still at the top of the list.

APTRANSCO also enquired about the indirect impact on transmission

charges if these transmission schemes are implemented. The impact should

be discussed in detail and to be informed to the State Utilities.

(iv) CTUIL informed that the cost of these transmission schemes for RE

evacuation would be included in the National Component (NC-RE) as per


CERC Sharing Regulations 2020 and not as Regional Component.

(v) Chairperson, SRPC and CMD, TANGEDCO observed that even though

these schemes are put under National Component, all the states have to share

the cost based on the total LT A granted to the states. Also in this case LT A

connectivity is only 20% of the transmission system proposed.

(vi) Director(Transmission), TSTRANSCO informed that no RE generation is

planned for Telangana state under this 18.5 GW REZ and Telangana is not a

beneficiary. However, Telangana has to share the transmission charges of

these schemes. The cost of transmission charges to be shared by Telangana

state is not known. They had added 2800 MW Solar generation without any

additional transmission lines for evacuation of this generation. The proposed

RE also needed to be implemented/evacuated by utilizing the existing

transmission system. Transmission schemes have to be implemented in

phased manner based on the L TA applications received. CTU has to consider

the transmission schemes planned by all STUs upto 2024 for all India studies

accordingly the requirement of additional transmission scheme has to be

assessed.

(vii) KPTCL enquired about the system studies carried out in this regard.

Transmission schemes are required to be implemented based on the LT A

applications. In case of Koppal 600 MW LTA has been granted and

additional 600MW LTA connectivity was under consideration. For Gadag

REZ, 460MW of LT A has been granted out of the total RE capacity planned

2500 MW. It is suggested to implement the transmission schemes in phased

manner. As the LTA connectivity is 1200 MW, three ICTs at Koppal may

be implemented in first phase and balance in the second phase. The impact

on the transmission charges on the states on account of implementation of

transmission schemes for 18.5 GW REZ should be made available to the

states. As per the L TA applications for Koppal, the L TA start date is

mentioned as October/December 2022. However, it was understood that the

tendering process etc. was yet to start. The mismatch needed to be addressed.

It was observed that one of the RE projects is Round The Clock (RTC)

power ( combination hybrid solar & storage) and in one case it is peak hour

power. Hence these all are to be considered in the all India study because it

has an impact on the network.

(viii) MD, PCKL informed that DISCOMs of Kamataka should not be burdened

with any additional transmission charges due to implementation of subject


transmission schemes. The impact of transmission charges on

implementation of these transmission schemes needs to be addressed.

(ix) T ANGEDCO informed that they had written two letters to CEA vide dated

31.07.2019 and 09.08.2019 on SRSCT approval and requested to issue

corrigendum to the minutes of 2nd

SRSCT meeting because the views of

T ANGEDCO were not recorded properly, they had opposed the schemes in

the meeting. CEA had replied that inter regional system strengthening

schemes require all India study. So it is understood that the entire scheme is

not approved and the schemes are yet to be finalized based on the all India

study. Entire transmission scheme was evolved based on the 2021 scenario

taking into account of 18.5 GW RE potential. CTU has informed that 10.5

GW is put on hold due to non-availability of land etc. A revised study based

on the 2022-23 scenarios and the projected capacity addition of 8GWin

Kamataka and Tamil Nadu shall be conducted and placed before SRPC (TP)

for further deliberations and approval.

In respect of the RE projects proposed in TN, out of the 2500 MW proposed

in Karur, transmission scheme under Phase I is proposed for 1000 MW. The

Stage II connectivity is granted for 420 MW (270MW + l 50MW) for which

LTA is granted for 100 MW only. However, during the NCT (National

Committee on Transmission) meetings held on 20.01.2021 and 28.01.2021,

even though CTU had proposed for one number of ICT and LILO of one

circuit of Pugalur- Pugalur HVDC 400 kV D/c line, based on the insistence

of SECI and PFC Consulting Ltd., NCT has accorded approval for LILO of

both the circuits and two numbers of ICTs. This is the violation of the CEA's

planning criteria as N-1 condition is not applicable for immediate

connectivity for RE projects. Hence, in the first phase, based on the LTA

applications, one number ICT and LILO of one circuit would be sufficient

for the present scenario. The upgradation of the Tuticorin-Salem-Madhugiri

400 kV corridor into 765 kV shall be delinked from the present proposal as it

would be redundant.

(x) Director (Transmission & SO), KSEBL endorsed the views of

APTRANSCO, KPTCL, TANGEDCO and TSTRANSCO. As per the

present sharing mechanism, sharing of transmission cost on stranded

generating stations is also shared among the states. As explained by CTU

these transmission charges are under National Component, a detailed study

shall be carried out on National perspective. The transmission system is

already strengthened to accommodate various projects but they had not


materialized. Hence detailed review of the scheme based on the load flows

beyond 2023 needed to be carried out. Delay in the generation projects in

view of Pandemic shall also be considered in the studies.

(xi) JSWEL submitted that JSW is presently developing 1260 MW of wind

power projects in the State of Tamil Nadu with total investment of more than

Rs.8000 crores. Out of 1260 MW, 420 MW of Wind Power Projects are

being developed at Karur in Tiruppur District of the State of Tamil Nadu.

JSW has also obtained Stage-II connectivity from Central Transmission

Utility of India (CTUIL) for a quantum of 420 MW at a new ISTS substation

to be developed in Karur, Tiruppur. JSW has acquired around 50% of land

required for development of wind power project at Karur and TSR for the

balance quantum of land is in progress. JSW is committed to commission its

wind power projects at Karur by October 2022. Any delay in timely

regulatory approval for substation or non-development of new ISTS Karur

substation is detrimental to JSW's wind power projects in terms of its

commercial viability. In view of above, requested to approve the

development of ISTS Karur substation in phased manner as proposed by

CTUIL so as to enable timely commissioning of the wind power projects.

Further, 540 MW is being developed by JSW at Tuticorin for which JSW

have already applied 540 MW L TOA and have completed land acquisition

of around 30% of land required for the project. Hence, CTU's proposal for

putting up additional ICT may be approved.

(xii) CTUIL informed that the phasing of implementation of Transmission

schemes for 18.5 GW REZ has been done after due consideration of Ro W

issues in association with CEA. CTUIL requested that SRPC may

recommend the proposed phase-wise implementation based on the granted

LTA.

(xiii) COO, CTUIL stated that 18.5GW REZ m Southern Region is a part of

175GW target by Government of India by year 2022. The RE generation is

coming up in the Greenfield areas where transmission evacuation is not

available and the proposed scheme would facilitate for pooling stations for

RE evacuation & connectivity with the ISTS grid. Since the RE projects are

implemented through Competitive bidding process, there is a need to

facilitate the infrastructure so that not a single MW is bottled up. He

requested the consent/recommendation of SRPC for phase-wise

implementation of transmission schemes at Koppal, Gadag, Karur and one

ICT at Tuticorin so that the recommendation would be put up to CERC.


(xiv) Chairperson, SRPC and CMD, TANGEDCO requested all the state utilities

to furnish comments in writing to SRPC secretariat so that the same could be

included in the minutes of the meeting.

He thanked Members and Participants for active deliberation.

(xv) Member Secretary, SRPC thanked Chairperson, SRPC and CMD,

T ANGEDCO and other members.

2. 7 Subsequently, comments have been received from APTRANSCO, KPTCL,

PCKL, KSEBL, TANGEDCO, TSTRANSCO and JSWEL (Copies of the

comments are at Annexure- 2. 7). The summary of comments furnished by

state utilities are as follows:

(i) APTRANSCO:

a) The proposal is devoid of comprehensive studies encompassing All

India System combining the proposals of all the three regions, i.e,

Southern Western and Northern regions, duly optimizing the

existing /already built under operated /redundant network rather

than planning in a fragmented way for each of the three regions.

b) An undertaking needs to be collected from all the LT A applicants /

agencies to indemnify the beneficiaries by means of at least 50%

of the project cost in case the expected RE generators back out

from the project.

(ii) KPTCL:

a) The results of revised study conducted for different scenarios and time

frame by CTU duly updating the type of RE projects

(Solar/wind/hybrid etc) is not brought to the knowledge of SR

constituents.

b) In the Grant of LT A applications by CTU the proposed

Commissioning schedule by developer (as per LTA application) is

indicated in the time frame of October 2022 onwards at Gadag and

Koppal REZ of Karnataka. In this regard KPTCL is under the

apprehension that, there may be mismatch in the commissioning

schedule of CTU network and Generation projects from REZ which

may have financial implications on constituent states.


(iii)PCKL:

a) DISCOMs of Kamataka should not be burdened with any additional

transmission charges due to implementation of subject transmission

scheme or due to any downstream lines that may be constructed on

need basis at a later date.

b) The impact of PoC charges on implementation of these transmission

schemes needs to be addressed.

c) Detailed analysis/system studies needs to be carried out before

implementation of the scheme.

(iv)KSEBL:

KSEBL submit to defer the sanction of the scheme, directing CTU to put

forward with fresh proposals covering the suggestions came up in the

deliberations of the special SRPC meeting.

(v) TANGEDCO:

a) A revised study based on the 2022-23 scenario and the projected

capacity addition of 8GW ( excluding 10.5 GW deferred) in

Kamataka and Tamil Nadu shall be conducted and placed before

SRPC (TP) for further deliberations and approval.

b) The phasing of the transmission schemes shall be restricted to the

LTA granted by CTU.

c) The upgradation of the Tuticorin-Salem-Madhugiri 400 kV corridor

into 7 65 kV ( design voltage) shall be de linked from the present

proposal as it would be redundant.

(vi)TSTRANSCO:

a) The transmission network planned for evacuation of 4.5GW is 4 times

higher than the network required for the actual quantum of LT A, as

per present transmission charges policy, the cost of 4.5 GW of RE

SEZ has to be shared under National Component by all states

according to their LTOA& MTOA. It will be burden to Telangana

State.

b) CTU may explore the feasibility of evacuating power from these

projects using existing network as is being done by Telangana State to

avoid redundancy Transmission System as the Discoms are burdened

by sharing PoC charges.


2.8 Conclusion:

(i) Revised study needed to be carried out by CTUIL in consultation with

CEA based on the 2022-23 scenario as well as considering the

transmission system planned by STUs.

(ii) Based on the study carried out CTUIL may place fresh proposal for

the requirement of transmission network before Southern Regional

Power Committee (Transmission Planning) i.e. SRPC (TP) [ which

was earlier known as SRSCT - Southern Regional Standing

Committee on Transmission] for deliberation/finalisation.

(iii) Impact on the transmission charges of the States due to the

implementation of transmission schemes for integration/evacuation of

the REZ would be apprised to the States by CTUIL.

(iv) The transmission scheme for integration of REZ, finalised by SRPC

(TP) based on the revised study would be implemented in phased

manner strictly based on the L TA granted.

****


Transmission System associated with 8 GW REZ in Southern Region

RE Potential of 18.5 GW in SR

State/District

Kurnool

Ananthpuram

Koppal

Gadag

Bidar

Karur

Tirunelveli

Total

Solar Wind

(all Units in GW)

Andhra Pradesh

2.5

2.5

2.5

2.5

10

Karnataka

Tamil Nadu

3.0

2.5

2.5

0.5

8.5

Total

5.5

2.5

2.5

2.5

2.5

2.5

0.5

18.5

Transmission scheme for integration of REZ in SR

□ Transmission scheme for integration and evacuation of 18.5 GW REZ was

discussed in the 1st SRSCT held on 07.09.2018 and 2nd SRSCT held on

10.06.2019.

□ In 2nd SRSCT meeting it was agreed that scheme would be implemented as

ISTS, consequent to grant of L TA by CTU

□ Scheme also discussed in the 36th SPRC held on 12.07.2019, 37th SPRC

held on 31.01.2020 & 01.02.2020 and 38th SPRC held on 22.12.2020 &

23.12.2020

□ System studies carried out by CTU (9 scenarios for 2021-22 timeframe) and

circulated to constituents/ website for comments as per CERC Palnning

Regulations


□ CERC vide Record of Proceeding (date of hearing: 25.06.2021) in Petition

No.200/MP/2019 directed CTU/SRPC to hold the RPC meeting to discuss

the developments and implementation of the transmission scheme in phase

wise manner with the constituents of Southern Region.

□ During Meeting held on 14.07.2021 CTU requested for recommendation of

SRPC to take up the implementation of the Tr. schemes in phase-wise

manner considering already granted Stage-I I connectivity/L TAs to various

RE developers in Koppal, Gadag, Karur and Tuticorin REZs


□ As per the MoM of the Special SRPC meeting, it was decided that:

c Revised study to be carried out by CTUIL with CEA based on the 2022-23 scenario

as well as considering the transmission system planned by STUs

c Proposal for the requirement of transmission network to be discussed in SRPC (TP)

c Impact on the transmission charges of the States due to the implementation of

transmission schemes to be informed to the states

c Transmission scheme for integration of REZ, finalised by SRPC (TP) based on the

revised study would be implemented in phased manner strictly based on the L TA

granted

RE Potential of 8 GW in SR

State/District

Karnataka

Koppal

Gadag

Tamil Nadu

Karur

Tirunelveli

Total

Wind / Solar

2.5

2.5

2.5

0.5

8.0

Details of Connectivity/ LTA applications granted

Koppal

Gadag

Karur

Tirunelveli / Tuticorin

St-II

1200

460

420

2200.1

600

460

100

1640

LGB for 2023-24 (RE peak scenario)

I■■■■■■■■■■■■■■■ .

. . . .

. .

. . . . .

. .

. . . . . .

.

.

-

. - . .

NR 11440 39616 0 51056 22576 4420 58641 4500 6401 1360 0 3956 152910 82017 77048

WR 19000 35785 36985 91770 8168 3240 34022 4500 31068 0 0 10004 182772 79748 74917

SR 11000 33775 6040 50815 11922 3320 21041 4500 29532 2864 1185 2985 128163 70579 66303

ER 24440 12165 4500 41105 8182 0 250 400 0 0 0 0 49937 30895 29023

NER 750 133 0 883 4816 0 100 100 0 0 0 1821 7720 5319 4997

66630 121474 47525 235629 55663 10980 114054 14000 67001 4224 1185 18765 521501 252288 252288

235629 199278 268558

NR 32% 17% 0% 22% 70% 80% 90% 60% 50% 0% 0% 0% 88% 83%

WR 40% 3% 30% 22% 40% 80% 85% 60% 55% 0% 0% 0% 89% 84%

SR 10% 10% 33% 18% 40% 80% 85% 60% 55% 0% 0% 0% 80% 75%

ER 13% 16% 42% 7% 70% 80% 85% 60% 0% 0% 0% 0% 84% 79%

NER 0% 0% 0% 0% 70% 80% 85% 60% 0% 0% 0% 0% 64% 60%

NR 3614 6653 0 10994 15803 3536 52777 2700 3201 42157 0 0 88283 72490 15793

WR 7542 1238 11223 20125 3267 2592 28919 2700 17087 45350 0 0 74567 71334 3233

SR 1100 3223 2002 9050 4769 2656 17885 2700 16243 39894 0 0 50576 56368 -5792

ER 3080 1917 1898 2883 5727 0 213 240 0 15246 0 0 13075 25990 -12916

NER 0 0 0 0 3371 0 85 60 0 2161 0 0 3516 3398 118

Total 15335 13030 15122 43052 32938 8784 99878 8400 36531 144808 0 0 230018 229582 436

85583 69790

71867 68634

47876 53668

12835 25750

3456 3338

221618 221182

Tr. System for Karur REZ

Phase-I (1000 MW) :

c 400/230 kV, 2x500 MVA Karur Pooling Station

c LI LO of both circuits of Pugalur - Pugalur (HVDC) 400 kV D/c line (with Quad Moose

ACSR Conductor) at Karur PS

c 4 Nos. of 230 kV line bays for interconnection of wind projects

c 2x125 MVAr, 400 kV Bus reactors at Karur PS

c Space provision for future expansion & Ph-II

Phase-II (1500MW) :

c Augmentation of 3x500 MVA, 400/230 kV at Karur PS

c 5 Nos. of 230 kV line bays for interconnection of wind projects

Tr. System for Gadag Part -A

Phase-I (1000 MW) :

c 4001220 kV, 2x500 MVA Gadag Pooling Station

c Gadag PS - Narendra (new) PS 400 kV (high capacity equivalent to quad moose) DIC Line

c 400 kV line bays at Narendra (new) for Gadag PS- Narendra (New) PS 400 kV Dlc line

c 220 kV line bays for interconnection of solar projects (4 nos)

c 1x125MVAr (400 kV) bus reactor at Gadag PS

c Space provision for future expansion & Ph-II

Phase-II (1500MW) :

c Augmentation of 4001220 kV, 3x500 MVA Gadag Pooling Station

c Gadag PS - Koppal PS 400 kV (high capacity equivalent to quad moose) DIC Line

c 400 kV line bays at Koppal PS for Gadag PS- Koppal PS 400 kV Dlc line

c 220 kV line bays for interconnection of solar projects (4 nos)

KoppalREZ

c Establishment of 5x500 MVA, 400/220 kV pooling station near Munirabad

/suitable location in Koppal distt.

c Koppal Pooling station - Narendra (New) 400 kV D/c Line (with Quad Moose

ACSR conductor)

c 9 Nos of 220kV line bays for interconnection of wind projects

c 2x125 MVAr,400kV bus reactor at Pooling station (near Munirabad /suitable

location in Koppaldistt.)

c Space provision for future expansion

Tirunelveli and Tuticorin Wind Energy Zone

c Addition of 1x500 MVA, 400/230kV ICTs (4th) at Tuticorin-11 GIS sub-station

System studies for 8 GW REZ in SR

1 .DlMl. ____ _

2 JlQQ_ __ _

374013 KOLHAPUR

-1010.2 231.0 -1010.2 231.0

------------

------------

392.1

1 �-----

System Studies for 8 GW REZ in SR

344001 MAPUSA4

-10.4 -78.0 -10.4 -78.0

-197.2 24.3 -197.2 24.3

383.5

-

374050 KOLHAPURPG

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378050 KOLHAPURPG

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141.0 -1032.8 141.0

388.0

344002 XELDEM4

-365.2 -71.0

-505.1 80.6 524034

KUDGI-NT 1'11'11\ a.a

1�----- 2 132.4

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136.1 -----------

397.2

42.9 -146.6

42.9 -146.6

42.9 -146.6

42.9 -146.6

Koppel & Godog REZ (5 GW)

524015 NARDR-NW

524022 KOPPAL

-1331.8 2500.0 47.8 345.3R -1331.8 47.8

------�

1

524017 ------omr2 GADAG PS sz

99.0 -25.9 99.0

a.a 2500.0 1 -25.9

131.8U(JU 400.0 255.2R 1s1

a.a 138.0 UIAI

-1120.9 116.7 -1120.9 116.7

400.0 524098 MADHUGl4

663.8-13.4 663.8 -13.4 a.a

1 70.3 uuu

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139.4�

390.9 402.0

1.ml.lt.-----

2.ml.lt. ___ _

System Studies for 8 GW REZ in SR N-1 of Kolhapur-Kolhapur (PG)

374013 KOLHAPUR 37 4050

378050 528002 NARENDERA NW

, -1713.7 �&4

I - ' i

--------------- -------------- � 1::::::::::::� ----

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-�

�,M,

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,lllllL.. -,�., I �co,� , Mn ,, I 'A

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M., �--• ,,,_,...,, I

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rt100!8t. 8F----------------- l

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380.2 0

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524098 I 400. o

----<�-• '"-'

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600 0

60.0 2-0

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·S1

1 1

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W( , 1500.0-'-141.0R

500.0 W1(

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2 1(11) 0.0 138.0

0.0 138.0

544025 TIRUNVLPOOL 500.0-116.0500.0-116.0500.0-116.0500.0-116.0

1.0 400.0

544114 CEPL

T1 ( 1_::.:-:

T2( )_::.:-: 1.0 400.0

System studies for 8 GW REZ in SR

544095 544113 DHARMPR

TU Tl-POOL

357.7 I --�, -139.9 357.7 -67.7

1.0 -530.262.2

/1 I I

-------<Rffl'1 I MPDU,PJ4 /

-677.2 85.3 I -23.3

-677.2 85.3

-274.3 I 544071

Tuticorin REZ (0.5 GW)

544018 TIRUNEL4 0.070.5

2

-363.845.8 -416.0 61.0-416.0 61.0

1.0, __

---

-41.8 -57.6

544021 KUDAN4

I 578.7 / 1 • N1

• -167.5R

: 578.7 )N2

I -167.5R

- 1.0 400.0

32.7 1.0 TUTICORIN JV -274.3 403.4 52.1 228.9

32.7 -42.0 -60.1 R )T1

52.1 228.9 )T2

-42.0 -60.1 R 1.0 1.0 400.6 400.0

Study Analysis

IJ Transmission system proposed is only for immediate integration with ISTS Grid and

margins available in the existing/under implementation transmission system shall

be utilized for further transfer of power

IJ Even the immediate transmission system is proposed for implementation in phased

manner associated with the grant of LTA

IJ From the system studies, it is found that line loadings are generally in order as per

the guidelines under the transmission planning criteria

IJ With the phased implementation of the transmission system matching with LTA,

upgradation of Narendra-Kolhapur line at its rated 765 kV level has been

deferred

IJ Further, to address overloading beyond Kolhapur, Kolhapur - Kolhapur (PG) 400

kV D/c lines has been agreed for reconductoring with twin HTLS in the 3rd

WRPCTP held on 14.06.2021.

Indicative Impact on the transmission charges

S.NO Scheme Proiect Cost of the

Levelized

Potential (MW) scheme (Cr.) (@15%

) cost(Crs.)

1 Tirunelveli and Tuticorin Wind Energy

500 37 5.55 Zone {Tamil Nadu) (500MW):

2 Karur / Tiruppur Wind Energy Zone

2500 344 51.6 {Tamil Nadu) (2500MW):

3 Koppal Wind Energy Zone (Karnataka)

2500 647 97.05 (2500MW):

Gadag SEZ Part-A(2500 MW) 2500 600 90

Total 8000 1628 244.2

Present total all India LTA quantum (A) = 101904 MW

RE LTA under waiver (B) = 9800 MW

Tariff payable by LTA beneficiaries = A- B = 92104 MW

Indicative Impact on transmission charges = Rs. 244.2/(92104x12) crs. = about Rs. 2210 per MW LTA/month

Phase-I transmission system

Phase-II transmission system is to be taken up only after receipt of Connectivity/LTA applications beyond1000 MW at Gadag or beyond 1500 MW at Koppal PS

Phase-I transmission system

Phase-II transmission system is to be taken up only after receipt of Connectivity/LTA applications beyond1000 MW at Karur

Bidar PS

Madhugiri(PG)

Maheshwaram

Gadag PSS2 : 2.5 GW

Koppal PS

Narendra(New)

Dharmapuri

Tuticorin PS

Tamil Nadu - REZ : 3 GW (WEZ)

Raigarh '

.-N. Trissur

' ' ' '

Madhugiri

Somanah�i

Total REZ in SR

, - - - - Phase-I: 5.5 GW (Dec'21 )

- - - - Phase-II: 5 GW (Dec'21)

- - - - Phase-Ill: 8 GW (Beyond

Dec'21)

Andhra Pradesh - REZ : 8 GW (SEZ-5GW & WEZ-3 GW)

Kurno�

l-111 PSW1: 25GW W2:05G S1: 1 5 G

Maheshwaram (PG)

► J

.r--� ...

,,,� J°7JJI

'! , ... ......

' ..,,. ...... Anantap"\tt=yf

S � \ c.--.....c.. S2 : 3.5 G Cuddap�h(PG)

.,, � \ J ..,_

.r....,...._ -\r-J t., •• .J t\

t--.A

\ \.,_ \

Nellore(PG)

-'>,.... ...... t....,..,.

,,,,,...r-

}.,

<:'.J

j\ "-"' ..\,,,, J).

\..I' �

Total REZ in SR •---- Phase-I: 5.5 GW (Dec'21) ---- Phase-II: 5 GW (Dec'21) ---- Phase-Ill: 8 GW (Beyond Dec'21)

भा�रत सरका�रGovernment of India

वि�द्युत मं�त्रा�लयMinistry of Powerका� न्द्री�य वि�द्युत प्रा�वि�कारण

Central Electricity Authorityवि�द्युत प्राण�ल� य�जना� ए�� मं�ल्य��काना - । प्राभा�ग

Power System Planning & Appraisal - I Division

सेवा में / To,

1. Shri Subir Sen, COO (CTUIL), PGCIL, Saudamini, Plot No. 2, Sector - 29, Gurugram– 122001

2. Shri Dilip Nigam, Scientist ‘G’, MNRE, Block no. 14, CGO Complex, Lodhi Road,New Delhi – 110003

3. Shri Shailesh Kumar Mishra, Director (Power System), SECI, 1st Floor, PRIUSPlatinum, D-3, District Centre, Saket, New Delhi – 110017.

वि�षय / Subject: Minutes of the meeting held on 11th August' 2021 to deliberate over the

issues raised by SECI/MNRE/CTU in the 5th meeting of the sub-committee on cross cuttingissues for setting up of transmission lines in RE rich areas held on 28.07.2021.

महोदय / Sir,

A meeting to deliberate over the issues raised by SECI/MNRE/CTU in the 5th meeting of thesub-committee on cross cutting issues for setting up of transmission lines in RE rich areaswas convened by CEA on 11th August' 2021 through VC under the chairmanship of Member(Power System).

The minutes of the meeting are enclosed herewith.

संलग्न / Encl. - उपरोक्त / as above

भवदीय / Yours faithfully,

(प्रि�यम श्रीवास्तव/Priyam Srivastava)

उप प्रिनदशेक /Deputy Director

�प्रित प्रिलप्रिप / CC: Director (Trans), MoP, Shram Shakti Bhawan

सेवा भवन, आर. के. परुम-I, नई प्रिदल्ली-110066 टेलीफैक्स: 011-26102045 ईमेल: [email protected] वेबसाइट: www.cea.nic.in

Sewa Bhawan, R.K Puram-I, New Delhi-110066 Telefax: 011-26102045 email: [email protected] Website: www.cea.nic.in

File No.CEA-PS-11-13/3/2020-PSPA-I DivisionI/17257/2021

31

Annex-18.3

http://www.cea.nic.in/

http://www.cea.nic.in/



Minutes of the meeting held on 11th August, 2021 to deliberate over the issues raised byMNRE and CTUIL in the 5th meeting of the sub-committee on cross cutting issues forsetting up of transmission lines in RE rich areas held on 28.07.2021.

List of participants is attached as Annexure-I.

Member (Power System), CEA, welcomed the participants and stated that in the 5th meetingof the sub-committee on cross cutting issues of setting up of transmission lines in RenewableEnergy (RE) Rich areas convened by MoP on 28.07.2021, CEA had been directed to convenea meeting with SECI, MNRE and CTUIL to discuss/resolve the issues raised by MNRE andCTUIL within 15 days. Accordingly, based on the agenda received from SECI and CTU, thismeeting has been convened.

The issues discussed in the meeting are as follows:

1. Issue: Status of approval and award for 20 GW Transmission system for locations inFatehgarh, Bhadla & Ramgarh and their timelines for availability for evacuation of REgeneration.

CEA’s views: The transmission system for evacuation of 20 GW RE in Rajasthan underPhase-III has already been discussed and approved in the NRPC (TP) meeting held on19.02.2021. The planned system would be discussed in the upcoming NCT meetingscheduled on 25.08.2021 and NCT would recommend the scheme to Government for itsimplementation.

Further, MoP vide letter dated 02.08.2021, has directed CEA/CTUIL to explore differentoptions for maximizing transmission capacity utilization including Battery Energy StorageSystem (BESS).

The transmission system for evacuation of 20 GW RE in Rajasthan under Phase-III inter aliaincludes 6000 MW, + 800 kV HVDC system from Bhadla-III – Fatehpur. The estimated costof HVDC scheme alongwith AC interconnections would be about 12000 Cr and wouldrequire an implementation timeframe of 3-4 years. In lieu of this scheme, SECI/MNRE mayplan Battery Energy Storage System for optimization as well as increased utilization of thebalance transmission system proposed under Phase-III as well as transmission system underPhase-I & II which are under implementation.

CTUIL’s views: Implementation of Battery Energy Storage System against the proposedHVDC scheme would certainly facilitate increase in the utilization of the proposed/underimplementation transmission schemes. However, implementation of the 20 GW transmissionsystem in phased manner as per the quantum of LTA applications from various REdevelopers at the planned Pooling Stations under Phase-III would avoid under-utilisation ofthe planned transmission system. Therefore, the transmission system for evacuation of 20GW RE in Rajasthan under Phase-III needs to be implemented in phases based on LTAapplications.

MNRE/ SECI’s views: The transmission system for evacuation of 20 GW RE in Rajasthanunder Phase-III may be taken up for implementation on priority basis as most of the solarcapacity addition has happened in Rajasthan and this would continue in future also. In the

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meantime, SECI is exploring the suitable business model for Battery and Energy Storagesystem so as to achieve maximum utilization of the 37 GW ( 8.9 GW + 8.1 GW + 20 GW)transmission system already planned/under implementation in Rajasthan. As this involvesresolution of certain regulatory issues which would take time, accordingly, implementation ofBESS should not be linked with the 20 GW RE system already planned in Rajasthan. Further,substantial RE potential is available in Rajasthan (in addition to the potential alreadydeveloped/under development), which would be developed in the coming years andBattery/energy storage system would be planned with further development of RE potential.

The following was agreed:

(i) Planning of Battery/ Energy Storage System for optimization as well as increasedutilization of the transmission system associated with RE generation projects inRajasthan would be done for RE capacity addition beyond 37 GW under ISTS inRajasthan.

(ii) SECI/MNRE may finalise the suitable business model for implementation of Battery/Energy Storage System along with associated Regulatory issues.

(iii) Based on the decision taken in the upcoming NCT meeting, the transmission systemfor evacuation of 20 GW RE generation in Rajasthan under Phase-III needs to betaken up for implementation in phased manner based on the quantum of LTAapplications.

2. Issue: Delay in signing of PPA/PSA for Manufacturing linked LoA

CEA’s views: RE generators with manufacturing based LoAs have been granted Stage-IIconnectivity at various under construction/planned pooling stations for 8500 MW capacity(Bhadla-II PS: 1500MW, Fatehgarh-II PS: 1000MW, Fatehgarh-III PS: 4000MW & RamgarhPS: 2000 MW). However, as informed by CTU, no LTA applications has been received fromsuch RE developers as PPA/PSA have not been signed. This has resulted in grant ofconnectivity & LTA to other RE applicants (who have won other LOAs) at newsubstations/sections (Fatehgarh-III new section) which will take more time for developmentas part of Phase-III scheme.

CTUIL’s views: If clarity is obtained with respect to the materialization of LTA for thesemanufacturing based LoAs, then capacity in Phase-II system already blocked by thesemanufacturing linked RE applicants can be allocated to other RE applicants with firmtimeline. This would also ensure that the transmission system under Phase-II which is alreadyunder implementation is fully utilized.

MNRE/ SECI’s views: PPA/PSA of manufacturing based LoAs for 800 MW has alreadybeen signed and signing of additional PPA/PSA for 1000 MW is in pipeline. Regarding statusof signing of PPA/PSA for the balanced capacity, deliberations/negotiation are already goingon and SECI may be in position to convey the outcome by end of August, 2021.


(i) SECI to furnish the details of pooling station wise RE developers for the 1800 MWmanufacturing based LoAs whose PPA/PSA are likely to be signed.

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(ii) SECI in coordination with MNRE would review the status of PPA/PSA of balancemanufacturing based LOAs. The updated status would be conveyed to CEA/CTU bySeptember, 2021.

3. Issue: Award of balance transmission scheme of Northern Region of 8.1 GW scheme

Background: Seven number of Transmission schemes for evacuation of 8.1 GW RE powerin Northern Region under Phase-II were notified by MoP vide Gazette Notification dated27.10.2020. Five out of these seven transmission schemes are presently underimplementation, one is under bidding and the balance one i.e Phase-II Part E schemecomprising of Bhadla-II PS – Sikar-II 765kV D/c line (2nd) has been kept on hold. Further,few ICT augmentations under RTM (Bhadla-II ICTs) have also been kept on hold.

CTUIL’s views: LTA for about 4.4 GW RE capacity has been received on transmissionsystem for SEZ Ph-II RE in Rajasthan (8.1GW). Lack of additional LTA applications againstRajasthan SEZ Phase-II scheme has resulted in holding the bid process of Package-E (TBCB)& Part of B1-Bhadla-II ICTs (RTM).

MNRE/ SECI’s views: The scheme may not be kept on hold and as per the informationavailable with them, higher quantum of LTA applications are there for the Phase-II scheme asagainst 4.4 GW LTA indicated by CTU. SECI raised concern that some RE generators havebeen commissioned without the commissioning of associated transmission system and as aresult these RE generators have to sell power in short term through the interim arrangementmade for power evacuation. Hence, implementation of the transmission schemes needs totaken up in advance.


(i) SECI and CTU to reconcile the LTA quantum available for Phase-II scheme.(ii) Based on reconciliation of LTA quantum and clarity on the LTA applications from

manufacturing linked LoAs, decision regarding bidding of Package-E (TBCB) & Partof B1(Bhadla-II ICTs under RTM) may be taken up.

4. Issue: Whether the Transmission Scheme for evacuation of 2500 MW from KoppalREZ needs to be implemented in phased manner or as a single scheme.

Background:Transmission Scheme for evacuation of 2500 MW from Koppal REZ was notified by MoPvide Gazette Notification dated 09.10.2019. The same is under bidding. However, Regulatoryapproval for the scheme is awaited. CTU vide its letter dated 07.07.2021 has communicatedto CEA that ReNew Surya Ojas Pvt Ltd (RSOPL) has been identified as LTTC for theKoppal scheme. In the letter, it was also mentioned that RSOPL has been granted LTA for300 MW with 1x500 MVA, 400/220 kV ICT out of total 5x500MVA 400/220 kV ICTsplanned at Koppal. The communication received from CTU was forwarded to BPC.Subsequently, BPC vide letter dated 30.07.2021 has requested CEA to advise for signing ofTSA by M/s ReNew Surya Ojas Pvt Ltd for the complete transmission scheme as per originalscope ( i.e for 5x500 MVA, 400/220 kV Koppal P.S.).

Further, in view of receipt of Stage-II Connectivity and LTA application of 1200 MW and600 MW respectively at Koppal P.S., CTU has proposed phasing of Koppal scheme into 2

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phases with implementation of 3x500 MVA, 400/220 kV ICT under Phase-I and balance2x500 MVA, 400/220 kV ICT under Phase-II.

CTUIL’s views: i) Regulatory approval of Transmission schemes associated with evacuation of RE potential

zones in Southern Region is under consideration by CERC. CERC vide RoP dated25.06.2021 had directed SRPC to hold the RPC meeting to discuss the developments andimplementation of the transmission schemes in phase-wise manner with the constituentsof the Southern Region and submit the minutes of the meeting.

ii) On the direction of CERC, a special meeting of SRPC was held on 14.07.2021 whereinSRPC has concluded that revised studies may be carried out and a fresh proposal may besubmitted before SRPC(TP) and transmission system would be implemented in a phasedmanner strictly based on the LTA.

iii) CTU, vide affidavit dated 27.07.2021, has already submitted in CERC the Minutes of themeeting of Special SRPC meeting alongwith details of Connectivity / LTA granted to REdevelopers by wherein CTU has submitted phased implementation of the TransmissionSystem for Koppal REZ as per the details below:Transmission scheme for evacuation of 1500 MW from Koppal REZ under Phase-I

Establishment of 3x500 MVA, 400/220 kV pooling station near Munirabad /suitable location in Koppal distt.

Pooling station (near Munirabad /suitable location in Koppal distt.) - Narendra(New) 400 kV D/c Line (with Quad Moose ACSR conductor)

5 Nos of 220kV line bays for interconnection of wind projects 2x125 MVAr,400kV bus reactor at Pooling station (near Munirabad /suitable

location in Koppal distt.) Space provision for Phase-II

o 400/220 kV ICTs along with bays : 3 nos.o 220 kV line bays : 4 nos.

Adequate space provision for further expansion :o 400/220 kV ICTs along with bays : 3 nos.o 400 kV line bays : 6 nos.o 220 kV line bays : 7 nos.

Transmission scheme for evacuation of 1000 MW from Koppal REZ under Phase-II Augmentation of 400/220 kV, 2x500 MVA Koppal Pooling Station 4 Nos of 220 kV line bays for interconnection of wind projects

iv) LTA and Stage-II Connectivity has been granted at Koppal PS for 600 MW and 1200MWrespectively. However, LTA Agreement has been signed & CBG has been submitted for300MW only and same has been informed to CEA as part of details of LTTC for the parttransmission system at Koppal REZ. The LTA grantee (granted on 03.08.2021) foradditional 300 MW is required to sign LTA Agreement by 02.09.2021 and to submitCBG of Rs. 15 Crs. within 3 months thereafter.

MNRE/ SECI’s views: SECI informed that out of 1200 MW Stage-II connectivity granted atKoppal P.S., LTA for 600 MW has already been granted. Discussions for PSA signing withRajasthan for additional 600 MW is expected to be concluded (by 13.08.2021) and LTAapplication for the same shall be submitted to CTU shortly. In addition, the following bids arein pipeline:

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(i) 1200 MW Hybrid pan-India tender whose e-RA was scheduled in third week ofAugust’2021.

(ii) 1200 MW SECI-XI Wind ISTS location specific tender (Gadag, Koppal, Kallamand Rajgarh) whose e-RA would be scheduled after 1200 MW Hybrid pan-Indiatender.

(iii) 600 MW Solar Park tender for Koppal.(iv) 600 MW Solar park tender for Gadag.

It is expected that conclusion of above bids would result in LTA of more than 1500 MW atKoppal P.S. Accordingly, the bidding may be carried out for Transmission Scheme forevacuation of total identified potential of 2500 MW for Koppal REZ instead of phasing thescheme.

CEA’s views: The scheme includes establishment of 400/220 kV, 5x 500 MVA Poolingstation and a 400 kV D/c line. Phasing of the ICTs at the Pooling station has been suggestedby CTU. However, as per SECI, conclusion of location specific and other bids in pipelinewould result in LTA of more than 1500 MW at Koppal P.S. Therefore, instead of phasing ofthe transmission scheme for Koppal and implementing it into two phases, the implementationtimeframe of the 400/220 kV, 5x500 MVA ICTs at Koppal P.S. may be staggered.


(i) Transmission Scheme for evacuation of 2500 MW power from Koppal REZ would beimplemented with establishment of 5x500 MVA, 400/220 kV Koppal P.S. However,the commissioning schedule would be staggered with time gap of six months i.e,commissioning schedule of 18 months for 3x500 MVA, 400/220 kV ICTs andcommissioning schedule of 24 months for balance 2x500 MVA, 400/220 kV ICTs.BPC to go ahead with bidding process with signing of TSA by the identified LTTCfor the complete scheme.

(ii) To facilitate the Regulatory Approval of the scheme, SECI to file affidavit in CERCjustifying the implementation of complete transmission scheme at Koppal REZ (2500MW), instead of phasing the scheme.

(iii) SECI to pursue with M/s ReNew Power Pvt Ltd for signing of the LTA Agreementwith CTU. SECI to pursue with RE developers who have already been granted Stage-II Connectivity at Koppal P.S, to apply for LTA with signing of PSA.

5. Issue: Status of LTA granted, signing of TSA and submission of bids for Gadag , Karur,Kallam, Pachora & Khavda.

5.1 Transmission Scheme for evacuation of 1000 MW from Gadag REZ under Phase-I:

Background: MoP vide Gazette notification dated 19th July, 2021, has notified theTransmission Scheme for evacuation of 1000 MW from Gadag REZ under Phase-I withimplementation timeframe of 18 months. The bid process for the same has been initiated bythe BPC. However, the Regulatory approval for the scheme is awaited.

CTUIL’s views: LTA for 460 MW (M/s ReNew -300 MW) and M/s Veena Energy-

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160MW) has been granted at Gadag P.S. However, the signing of LTA agreement andsubmission of CBG by the applicant is pending. M/s ReNew and M/s Veena Energy havesought LTA with start date of 31.12.2022 and 31.03.2023 respectively. The grantees arerequired to sign LTA Agreement by 02.09.2021 and submit applicable CBG within threemonths thereafter. In absence of LTA agreement and completion of the other formalities,CTUIL is not in a position to share LTTC details.

5.2 Transmission Scheme for evacuation of 1000 MW from Karur REZ under Phase-I :

Background: MoP vide Gazette notification dated 19th July, 2021 has notified theTransmission Scheme for evacuation of 1000 MW from Karur REZ under Phase-I withimplementation timeframe of 18 months. The bid process for the same is to be initiated by theBPC. However, the Regulatory approval for the scheme is awaited.

CTUIL’s views: 420 MW Stage-II Connectivity and 100 MW LTA has been granted atKarur P.S. The LTA agreement for 100 MW has been signed and the LTTC for the schemehas already been intimated to BPC.

5.3 Transmission scheme for evacuation of 3 GW from Khavda under Phase-I:

Background: MoP vide Gazette notification dated 23.09.2020 has notified the scheme. Thesame is under bidding by the BPC. However, the Regulatory approval for the scheme isawaited.

CTUIL’s views: 3500 MW Stage-II Connectivity and 1000 MW LTA has been granted atKhavda P.S. The LTA agreement for 1000 MW has already been signed and the LTTCsidentified for the scheme has been intimated to the BPC.

5.4 Transmission Scheme for evacuation of 1000 MW from Osmanabad (Kallam):

Background: MoP vide Gazette notification dated 24.01.20 has notified the scheme. Thesame is under bidding by the BPC. Regulatory approval for the scheme is available.

CTUIL’s views: 1000 MW Stage-II Connectivity and 300 MW LTA has been granted atKallam P.S. However, signing of LTA agreement and submission of CBG by the applicant ispending. Subsequent to signing of LTA agreement, the LTTC’s for the scheme would beintimated to CEA and BPC.

5.5 Transmission Scheme for evacuation of 1500 MW from Rajgarh (Pachora)- Phase-I:

Background: MoP vide Gazette notification dated 19th July, 2021 has notified theTransmission Scheme for evacuation of 1500 MW from Rajgarh (Pachora) under Phase-Iwith implementation timeframe of 18 months.

CTUIL’s views: Stage-II Connectivity and LTA of 1000 MW has been granted at PachoraP.S. However, signing of LTA agreement and submission of CBG by the applicant ispending.

In respect of the above five issues, following was agreed:

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SECI to pursue with LTA grantees to sign the LTA Agreement and submit CBGimmediately, wherever applicable.

SECI to pursue with Stage - II Connectivity grantees regarding application for LTA.

6. Issue: Award for transmission scheme for evacuation of power from Indore PS for 324.4MW project of SBESS and its scheduled completion date.

SECI raised the concern that with interim arrangement for evacuation of power through intra-state system of MP, only about 200 MW power could be evacuated.

It was informed that the scheme has already been awarded to POWERGRID under RTM on13.04.2021 with completion schedule of 12 months (April 2022). As per the 32nd JCCMeeting held on 29.06.2021, efforts are being made to complete the works well within thescheduled timeframe of April, 2022.

7. Issue: Expedite award for transmission scheme for evacuation of power from Hiryurand its scheduled completion date.

SECI’s view: ReNew Power has been granted LTA for 300 MW at Hiriyur with start date of31.12.2021 or commissioning of ICT at Hiriyur, whichever is later. RE developer hasinformed that they will be ready to commission about 150 MW capacity shortly and 3rd ICT isrequired to be commissioned before commissioning of the project by M/s ReNew Power.

CTUIL’s view:

3rd ICT (500MVA) at Hiriyur was proposed as part of Regional System Strengtheningscheme in Southern Region in the 2nd SRPC(TP) meeting held on 01.10.2020. MoPvide OM dated 16.07.2021 has already allocated the implementation work toPOWERGRID under RTM with commissioning schedule of 15 months.

As constraints were observed in the existing transmission system, augmentation ofICT was agreed and with the same ICT, LTA was granted to M/s ReNew Power Pvt.Ltd. for 300 MW. However, upto the commissioning of ICT, existing margins ofabout 100-150 MW may be utilised for evacuation of power from RE generations atHiriyur.

8. Issue: Expedite award for transmission scheme for evacuation of power from Tuticorinand its scheduled completion date.

SECI’s views: SECI raised the issue that LTA application for 540 MW has been submittedby RE generation developers for Tuticorin II GIS PS in June, 2021, thereby the total LTAquantum has become 1640 MW (1100 MW + 540 MW). For evacuation of power from theRE generation projects, ICT augmentation at Tuticorin II GIS PS needs to be taken up onpriority.

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CTUIL’s views: LTA of 540 MW to JSW has been agreed for grant with 1x500 MVA 400/230 kV ICT

(4th ICT) at Tuticorin-II PS. Tuticorin-II GIS PS has been commissioned as part of GreenEnergy Corridor with 2x500 MVA, 400/230kV ICTs. In addition, 1x500 MVA,400/230kV 3rd ICT is under advanced stage of completion.

Presently, LTA of 1100 MW has been granted, out of which 950 MW is under operation.For effectiveness of present 540 MW LTA, implementation of 1x500 MVA 4th ICT needsto be taken up with the grant of LTA beyond 1500 MW. Accordingly, implementation of4th ICT at Tuticorin-II GIS PS is to be taken up. The ICT has been allocated toPOWERGRID under RTM, however Regulatory Approval for the same is awaited.

With the 3 nos. of 500 MVA ICTs, about 1400 MW power can be evacuated. Lookinginto the already granted LTA for 1100 MW, LTA of about 300 MW can be partoperationalized out of agreed 540 MW grant of LTA to M/s JSW.

---------x--------

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Annexure- I

List of Participants of meeting held 11th August' 2021 to deliberate over the issuesraised by SECI/MNRE/CTU in the 5th meeting of the sub-committee on cross cuttingissues for setting up of transmission lines in RE rich areas

Name Designation

Central Electricity Authority

Goutam Roy Member (Power System)

Ishan Sharan Chief Engineer (PSPA-I)

Awdhesh Kumar Yadav Director (PSPA-I)

Priyam Srivastava Dy. Director (PSPA-I)

MNRE

Dilip Nigam Scientist ‘G’

Irfan Ahmad Director

CTUIL

Subir Sen COO

Ashok Pal Dy. COO

P. S. Das Sr. GM

Anil Kumar Meena Sr. DGM

Kashish Bhambani Sr. DGM

SECI

S. K. Mishra Director (Power System)

R. K. Agarwal Consultant

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Assumptions considered for preparation of load generation scenarios for RE integration in 2024-25

1. Time frame Considered: Transmission studies carried out for 2024-25 timeframe.

2. Scenarios : The study carried out for Summer (June), Winter (February) andMonsoon(August) season. To study the variation in generation required to meet the load, studyhas been carried out for three conditions, Morning Solar Peak, Evening Peak and night offpeak. During morning Solar generation is at its peak and thermal generation requirement isat minimal and by evening the solar is zero and the thermal contribution is maximum. Thescenario is tested for any constraints like generation maximum and minimum limit

3. Load Demand : While the Coona-19 has had a devastating impact on the economyIndian economy has been slowly bouncing back. In the studies load has beenconsidered as per as per the 19th EPS. (All India 266751 MW)

4. Demand factors : Calculated as per data received from POSOCO (enclosed inAnnexure)

5. Generation: In order to meet the required demand of a region, RE has been consideredas must-run. Total RE generation has been apportioned as per RE RPO to all regionsas per their projected EPS demand.

6. For accounting the availability of solar roof-top generation, equivalent load is reducedfrom respective regions.

7. Nuclear, gas and hydro have been considered as per the scenario and the balancedemand is met by thermal generation.

8. Evening peak scenario of each month was setup first as the number of thermal unitsrequired shall be maximum in this scenario. Total thermal generation requirement ofthis scenario is apportioned between state and central sector thermal generation as

Annex-19

per their installed capacity in each region. Further, state thermal generation requirement is divided among the states as per their maximum demand in each month of 2019-20.

9. After obtaining state thermal generation requirement, thermal units were switched onat technical maximum (85/90%) in merit order for each state.

10.To meet central thermal requirement, ISGS & IPP thermal plants with lower variablecost have been identified by dispatching them at technical maximum (85%) regionwise progressively. Demand of any region (like NR, SR) not met by thermal generationwithin that region is balanced by plants from other region (like WR, ER) consideringall India merit order for evening peak scenario.

11.For preparing night off peak scenario of the month, as discussed above state andcentral generation requirement was identified and economic dispatch was carried outby considering same number of units. These generating plants were scaled downproportionately.

12.While preparing the solar max scenario it was observed that even after running all theon-bar plants at technical minimum, surplus thermal generation was available, whichindicated that some plants needs to be switched off to balance the load generation.Accordingly, thermal plants with higher cost are switched off region wise progressivelytill the LGB is balanced.

180000

175000

170000

165000

160000

155000

150000

0:00:00

180000

170000

165000

160000

155000

150000

145000

140000

2:00:00 4:00:00 6:00:00 8:00:00

JUN 2019

10:00:00 12:00:00 14:00:00 16:00:00 18:00:00 20:00:00 22:00:00

FEB 2020

AUG 2019

00:00:00 02:00:00 04:00:00 06:00:00 08:00:00 10:00:0012:00:0014:00:00 16:00:00 18:00:00 20:00:00 22:00:00 (blank)

All India LGB 2024-25

Regi Thermal Thermal Thermal Total Hydro Nuclear Solar Solar Wind Other Diesel Gas Total EPS Peak App.

on Central State Private Thermal Rooftop Renewa Demand Peak

ble Demand

NR 11440 39616 0 51056 22576 4420 58641 4500 6401 1360 0 3956 152910 86778 81520

WR 19000 35785 36985 91770 8168 3240 34022 4500 31068 0 0 10004 182772 84502 79382

SR 11000 29775 6640 47415 11922 3320 28541 4500 32532 2864 1185 2985 135263 74666 70142

ER 24440 12165 4500 41105 8182 0 250 400 0 0 0 0 49937 32319 30361

NER 750 133 0 883 4816 0 100 100 0 0 0 1821 7720 5790 5439

66630 117474 48125 232229 55663 10980 121554 14000 70001 4224 1185 18765 528601 266844 266844

232229 209778 284055 114755

Thermal Thermal Thermal Reqd Hydro Nuclear Solar Solar Wind Other Diesel Gas National Regional

Central State Private Thermal rooftop Renewa DF DF

ble

NR 25% 9% 0% 16% 70% 80% 90% 50% 50% 0% 0% 0% 82% 77%

WR 30% 3% 18% 13% 40% 80% 80% 50% 55% 0% 0% 0% 76% 72%

111 SR 21% 2% 45% 15% 40% 80% 80% 50% 55% 0% 0% 0% 74% 70%

ER 13% 14% 42% 9% 70% 80% 80% 50% 0% 0% 0% 0% 83% 78% ..

� N

.,, N

.. � -� <(

NER 0% 0% 0% 0% 70% 80% 80% 50% 0% 0% 0% 0% 69% 65%

21% 6% 24% 14% 83% 221481

Central State IPP Reqd Hydro Nuclear Solar Solar Wind RE RPO Diesel Gas Total Demand Surplus/ Net Net 111 C Thermal rooftop availabili Factor Deficit Availabih Demand

ty ty

NR 2888 3408 0 8334 15803 3536 52777 2250 3201 43170 0 0 83862 70843 13019 81612 68593

WR 5687 1238 6659 12207 3267 2592 27218 2250 17087 46440 0 0 65998 64506 1492 63748 62256

SR 2255 537 2992 7137 4769 2656 22832 2250 17893 40852 0 0 56184 55414 770 53934 53164

ER 3080 1690 1898 3793 5727 0 200 200 0 15612 0 0 12795 26727 -13932 12595 26527

NER 0 0 0 0 3371 0 80 so 0 2213 0 0 3501 3990 -489 3451 3940

Tota 13910 6873 11549 31471 32938 8784 103107 7000 38181 148288 0 0 370628 221481 860 215340 214481

32331 148287 208899

21% StateTh



ble

NR 69% 53% 0% 65% 95% 80% 0% 0% 70% 0% 0% 85% 88% 83%

WR 59% 37% 50% 37% 70% 80% 0% 0% 75% 0% 0% 85% 80% 75%

SR 21% 73% 45% 62% 70% 80% 0% 0% 75% 0% 0% 85% 76% 72%

ER 18% 62% 67% 42% 90% 80% 0% 0% 0% 0% 0% 85% 97% 91% 111 ..

,f N NER 0% 0% 0% 0% 90% 80% 0% 0% 0% 0% 0% 85% 93% 88%

N

-� <(

39% 54% 51% 49% 89% 237491

Thermal Thermal Thermal Reqd Hydro Nuclear Solar Solar Wind RE RPO Diesel Gas Total Demand Surplus/ Net Net 111 C Central State Private Thermal rooftop availabili Factor Deficit Availabili Demand

.,, ty ty

NR 7867 20972 0 32941 21447 3536 0 0 4481 15191 0 3363 61666 76477 -14812 61666 76477

WR 11175 13161 18372 34139 5717 2592 0 0 23301 16342 0 8503 82822 67294 15529 82822 67294

SR 2255 21646 2992 29168 8345 2656 0 0 24399 14375 0 2537 64830 57082 7748 64830 57082

ER 4367 7535 3026 17120 7364 0 0 0 0 5494 0 0 22291 31228 -8937 22291 31228

NER 0 0 0 0 4334 0 0 0 0 779 0 1548 5882 5410 472 5882 5410

Tota 25664 63314 24389 113368 47208 8784 0 0 52181 52181 0 15950 237491 237491 0 237491 237491

113368 52181 223667

56% StateTh



ble

NR 73% 50% 0% 68% 70% 80% 0% 0% 60% 0% 0% 65% 80% 75%

WR 63% 33% 50% 35% 40% 80% 0% 0% 65% 0% 0% 65% 70% 65%

SR 25% 55% 58% 53% 40% 80% 0% 0% 65% 0% 0% 65% 63% 59%

ER 28% 48% 67% 41% 70% 80% 0% 0% 0% 0% 0% 65% 88% 82%

NER 0% 0% 0% 0% 70% 80% 0% 0% 0% 0% 0% 65% 72% 67%

45% 46% 52% 47% 78% 208138

Thermal Thermal Thermal Reqd Hydro Nuclear Solar Solar Wind RE RPO Diesel Gas Total Demand Surplus/ Net Net

Central State Private Thermal rooftop avallablll Factor Deficit Avallablll Demand

ty ty

NR 8329 19848 0 34604 15803 3536 0 0 3841 13153 0 2571 53928 69667 -15740 53928 69667

WR 11991 11959 18372 32284 3267 2592 0 0 20194 14149 0 6502 74877 58795 16082 74877 58795

SR 2705 16287 3867 25344 4769 2656 0 0 21146 12447 0 1940 53370 47156 6215 53370 47156

ER 6829 5827 3026 16807 5727 0 0 0 0 4757 0 0 21409 28368 -6959 21409 28368

NER 0 0 0 0 3371 0 0 0 0 674 0 1183 4555 4153 402 4555 4153

Tota 29854 53920 25264 109039 32938 8784 0 0 45181 45181 0 12197 208138 208138 0 208138 208138

109039 45181 194444

49% StateTh


Regi Thermal Thermal Thermal Total Hydro Nuclear Solar Solar Wind Other Diesel Gas Total EPS Peak App.

on Central State Private Thermal Rooftop Renewa Demand Peak

ble Demand

NR 11440 39616 0 51056 22576 4420 58641 4500 6401 1360 0 3956 152910 86778 81520

WR 19000 35785 36985 91770 8168 3240 34022 4500 31068 0 0 10004 182772 84502 79382

SR 11000 29775 6640 47415 11922 3320 28541 4500 32532 2864 1185 2985 135263 74666 70142

ER 24440 12165 4500 41105 8182 0 250 400 0 0 0 0 49937 32319 30361

NER 750 133 0 883 4816 0 100 100 0 0 0 1821 7720 5790 5439

66630 117474 48125 232229 55663 10980 121554 14000 70001 4224 1185 18765 528601 266844 266844

232229 209778 284055 114755



ble

NR 26% 16% 0% 25% 70% 80% 90% 60% 50% 0% 0% 0% 88% 83%

WR 40% 4% 36% 24% 40% 80% 85% 60% 55% 0% 0% 0% 89% 84%

SR 49% 4% 55% 21% 40% 80% 85% 60% 55% 0% 0% 0% 80% 75%

ER 13% 15% 42% 8% 70% 80% 85% 60% 0% 0% 0% 0% 84% 79% SI"

0 N "'

NER 0% 0% 0% 0% 70% 80% 85% 60% 0% 0% 0% 0% 64% 60% N

C

-�.=!

29% 9% 39% 21% 91% 242828

Central Thermal Thermal Reqd Hydro Nuclear Solar Solar Wind RE RPO Diesel Gas Total Demand Surplus/ Net Net

C State Private Thermal rooftop availabili Factor Deficit Availabih Demand

"' ty ty

NR 3029 6188 0 12873 15803 3536 52777 2700 3201 44494 0 0 87233 76706 10527 84533 74006

WR 7568 1409 13280 21871 3267 2592 28919 2700 17087 47863 0 0 76822 75594 1228 74122 72894

SR 5367 1243 3652 10109 4769 2656 24260 2700 17893 42104 0 0 62539 59638 2901 59839 56938

ER 3080 1792 1898 3420 5727 0 213 240 0 16091 0 0 12949 27191 -14242 12709 26951

NER 0 0 0 0 3371 0 85 60 0 2281 0 0 3516 3700 -184 3456 3640

Tota 19044 10631 18829 48273 32938 8784 106253 8400 38181 152833 0 0 243059 242828 231 234659 234428

48505 152833 228013

22% StateTh



ble

NR 73% 68% 0% 92% 95% 80% 0% 0% 70% 0% 0% 85% 104% 98%

WR 71% 52% 72% 46% 70% 80% 0% 0% 75% 0% 0% 85% 90% 84%

SR 55% 72% 62% 75% 70% 80% 0% 0% 75% 0% 0% 85% 85% 80%

ER 28% 62% 67% 42% 90% 80% 0% 0% 0% 0% 0% 85% 99% 93%

NER 0% 0% 0% 0% 90% 80% 0% 0% 0% 0% 0% 85% 83% 78%

52% 63% 70% 61% 100% 266844


Central State Private Thermal rooftop availabili Factor Deficit Availabili Demand

ty ty

NR 8329 26804 0 47116 21447 3536 0 0 4481 15191 0 3363 67960 90653 -22693 67960 90653

WR 13431 18505 26658 42510 5717 2592 0 0 23301 16342 0 8503 98708 75664 23044 98708 75664

SR 6050 21440 4114 35760 8345 2656 0 0 24399 14375 0 2537 69541 63673 5868 69541 63673

ER 6829 7535 3026 17335 7364 0 0 0 0 5494 0 0 24753 32040 -7287 24753 32040

NER 0 0 0 0 4334 0 0 0 0 779 0 1548 5882 4814 1068 5882 4814

Tota 34639 74284 33798 142721 47208 8784 0 0 52181 52181 0 15950 266844 266844 0 266844 266844

142721 52181 250330

52% StateTh



ble

NR 69% 63% 0% 79% 70% 80% 0% 0% 60% 0% 0% 60% 86% 81%

WR 68% 47% 69% 48% 40% 80% 0% 0% 65% 0% 0% 60% 83% 78%

SR 55% 61% 62% 67% 40% 80% 0% 0% 65% 0% 0% 60% 71% 67%

ER 27% 43% 67% 37% 70% 80% 0% 0% 0% 0% 0% 60% 84% 79%

NER 0% 0% 0% 0% 70% 80% 0% 0% 0% 0% 0% 60% 62% 58%

50% 56% 68% 57% 86% 229486


Central State Private Thermal rooftop availabili Factor Deficit Availabili Demand

ty ty

NR 7867 24961 0 40119 15803 3536 0 0 3841 13153 0 2374 58382 74985 -16603 58382 74985

WR 12871 16829 25572 44303 3267 2592 0 0 20194 14149 0 6002 87327 70314 17013 87327 70314

SR 6050 18199 4114 31705 4769 2656 0 0 21146 12447 0 1791 58724 53367 5357 58724 53367

ER 6577 5259 3026 15198 5727 0 0 0 0 4757 0 0 20589 27237 -6648 20589 27237

NER 0 0 0 3371 0 0 0 0 674 0 1092 4464 3582 881 4464 3582

Tota 33365 65248 32711 131325 32938 8784 0 0 45181 45181 0 11259 229486 229486 0 229486 229486

131325 45181 215118

50% StateTh

"'

N

"' N

,... ..0

-�.,

"'

.,

"'

-"' "'

& s .• N

00 �

-� LL "'C

Regi Thermal

on Central

NR 11440

WR 19000

SR 11000

ER 24440

NER 750

66630

Thermal

Central

NR 32%

WR 44%

SR 55%

ER 41%

NER 0%

42%

Thermal

Central

NR 3614

WR 8448

SR 6050

ER 10120

NER 0

Tota 28232

43% StateTh

Thermal

Central

NR 73%

WR 71%

SR 59%

ER 65%

NER 0%

66%

Thermal

Central

NR 8329

WR 13431

SR 6500

ER 15782

NER 0

Tota 44042

49% StateTh

Thermal

Central

NR 69%

WR 68%

SR 55%

ER 41%

NER 0%

55%

Thermal

Central

NR 7867

WR 12871

SR 6050

ER 10120

NER 0

Tota 36908

48% StateTh

Thermal

State

39616

35785

29775

12165

133

117474

232229

Thermal

State

34%

29%

47%

26%

0%

35%

Thermal

State

13379

10455

13909

3107

0

40850

94247

Thermal

State

62%

59%

89%

62%

0%

68%

Thermal

State

24428

21198

26379

7535

0

79540

163079

Thermal

State

43%

53%

80%

41%

0%

55%

Thermal

State

16914

18937

23950

4943

0

64744

134823

Thermal Total

Private Thermal

0 51056

36985 91770

6640 47415

4500 41105

0 883

48125 232229

Thermal Reqd

Private Thermal

0% 28%

53% 44%

55% 66%

42% 16%

0% 0%

52% 40%

Thermal Reqd

Private Thermal

0 14225

19616 40180

3652 31180

1898 6623

0 0

25165 92208

Thermal Reqd

Private Thermal

0% 77%

85% 59%

76% 106%

67% 48%

0% 0%

82% 70%

Thermal Reqd

Private Thermal

0 39158

31416 53910

5056 50382

3026 19630

0 0

39497 163079

Thermal Reqd

Private Thermal

0% 51%

72% 54%

55% 94%

67% 36%

0% 0%

69% 58%

Thermal Reqd

Private Thermal

0 26050

26493 49726

3652 44396

3026 14651

0 0

33171 134823


Hydro Nuclear Solar Solar Wind Other

Rooftop Renewa

ble

22576 4420 58641 4500 6401 1360

8168 3240 34022 4500 31068 0

11922 3320 28541 4500 32532 2864

8182 0 250 400 0 0

4816 0 100 100 0 0

55663 10980 121554 14000 70001 4224

209778


rooftop Renewa

ble

30% 80% 95% 60% 10% 0%

20% 80% 90% 60% 10% 0%

20% 80% 90% 60% 0% 0%

30% 80% 90% 60% 0% 0%

30% 80% 90% 60% 0% 0%

Hydro Nuclear Solar Solar Wind RE RPO

rooftop

6773 3536 55709 2700 640 36239

1634 2592 30620 2700 3107 38983

2384 2656 25687 2700 0 34293

2455 0 225 240 0 13105

1445 0 90 60 0 1858

14690 8784 112330 8400 3747 124477

124477


rooftop Renewa

ble

60% 80% 0% 0% 35% 0%

40% 80% 0% 0% 20% 0%

40% 80% 0% 0% 20% 0%

60% 80% 0% 0% 0% 0%

60% 80% 0% 0% 0% 0%


rooftop

13545 3536 0 0 2240 4355

3267 2592 0 0 6214 4685

4769 2656 0 0 6506 4121

4909 0 0 0 0 1575

2890 0 0 0 0 223

29380 8784 0 0 14960 14960

14960


rooftop Renewa

ble

30% 80% 0% 0% 10% 0%

20% 80% 0% 0% 20% 0%

20% 80% 0% 0% 0% 0%

30% 80% 0% 0% 0% 0%

30% 80% 0% 0% 0% 0%


rooftop

6773 3536 0 0 640 1995

1634 2592 0 0 6214 2146

2384 2656 0 0 0 1888

2455 0 0 0 0 722

1445 0 0 0 0 102

14690 8784 0 0 6854 6854

6854

Diesel Gas Total EPS Peak App.

Demand Peak

Demand

0 3956 152910 86778 81520

0 10004 182772 84502 79382

1185 2985 135263 74666 70142

0 0 49937 32319 30361

0 1821 7720 5790 5439

1185 18765 528601 266844 266844

284055 114755

Diesel Gas National Regional

DF DF

0% 0% 70% 66%

0% 0% 99% 93%

0% 0% 94% 89%

0% 0% 69% 65%

0% 0% 55% 52%

90% 240160

Diesel Gas Total Demand Surplus/ Net Net

availabili Factor Deficit Availabih Demand

ty ty

0 0 86350 60773 25577 83650 58073

0 0 79171 83388 -4217 76471 80688

0 0 57038 70513 -13475 54338 67813

0 0 18044 22291 -4247 17804 22051

0 0 1595 3195 -1600 1535 3135

0 0 242198 240160 2038 233798 231760

226331


DF DF

0% 85% 74% 70%

0% 85% 86% 82%

0% 85% 86% 82%

0% 85% 81% 77%

0% 85% 79% 75%

87% 232154


availabili Factor Deficit Availabili Demand

ty ty

0 3363 55442 63958 -8516 55442 63958

0 8503 86621 72957 13664 86621 72957

0 2537 54403 64465 -10062 54403 64465

0 0 31251 26202 5049 31251 26202

0 1548 4437 4572 -135 4437 4572

0 15950 232154 232154 0 232154 232154

220490


DF DF

0% 30% 46% 43%

0% 30% 70% 66%

0% 30% 70% 66%

0% 30% 54% 51%

0% 30% 42% 40%

64% 170780


availabili Factor Deficit Availabili Demand

ty ty

0 1187 36917 39541 -2624 36917 39541

0 3001 71742 59099 12643 71742 59099

0 895 39588 52220 -12632 39588 52220

0 0 20543 17466 3077 20543 17466

0 546 1991 2454 -463 1991 2454

0 5630 170780 170780 0 170780 170780

161164

REGIO STATE PROJECT NAME UNIT CAPACITY Status SECTOR Rate Scenario -1 Scenario -2 Scenario -3 Scenario -4 Scenario -5 Scenario -6 Scenario -7 Scenario -8 Scenario -9

N (MW) (Existing/

UC)

NR Haryana Panipat 2x210 0 Existing State 10.00 0 0 0 0 0 0 0 0 0

NR Punjab Lehra Mohabbat TPS 2x210 0 Existing State 10.00 0 0 0 0 0 0 0 0 0

NR Punjab Guru Gobind Singh TPS Ropar 6x210 0 Existing State 10.00 0 0 0 0 0 0 0 0 0

NR Rajasthan Kata TPS 2x110 0 Existing State 10.00 0 0 0 0 0 0 0 0 0


NR UP Paricha - C 2x110 0 Existing State 10.00 0 0 0 0 0 0 0 0 0

NR UP Obra A 2x50 0 Existing State 10.00 0 0 0 0 0 0 0 0 0

NR UP Obra A 1X94 0 Existing State 10.00 0 0 0 0 0 0 0 0 0

NR UP Harduaganj - B 1x60 0 Existing State 10.00 0 0 0 0 0 0 0 0 0

NR UP Harduaganj - B lx105 0 Existing State 10.00 0 0 0 0 0 0 0 0 0

NR Rajasthan Dholpur CCPP 3x110 330 Existing State 6.48 0 0 0 0 0 0 0 0 0

NR UP Dadri NCTPS 4x210 840 Existing Central 4.52 0 462 462 462 462 462 462 462 462

NR Rajasthan Su ratga rh TPS 6x250 1500 Existing State 4.20 0 0 0 0 0 0 0 0 0

NR UP Khurja (2X660) 0 UC Central 4 0 0 0 0 0 0 0 0 0

NR UP Auriya CCGT 2X109 0 Existing Central 4 0 0 0 0 0 0 0 0 0

NR Rajasthan Anta CCGT 1X153 0 Existing Central 4 0 0 0 0 0 0 0 0 0

NR UP Dadri CCGT 2X154 0 Existing Central 4 0 0 0 0 0 0 0 0 0

NR Haryana Faridabad CCGT 1X156 0 Existing Central 4 0 0 0 0 0 0 0 0 0

NR Haryana RGTPP Kheddar 2x600 1200 Existing State 3.63 0 1080 1080 660 1080 1056 660 1080 772

NR Punjab Lehra Mohabbat TPS 2x250 500 Existing State 3.61 0 425 341 275 425 425 275 425 275

NR UP Dadri NCPS Stage-II 2x490 980 Existing Central 3.6 0 539 539 539 539 539 539 539 539

NR UP Harduaganj - C 2x250 500 Existing State 3.56 0 0 0 0 0 0 0 0 0

NR Haryana Bawana 2x253 506 Existing State 3.50 0 430 430 278 430 430 278 430 325

NR Haryana Panipat 2x250 500 Existing State 3.50 0 425 425 275 425 425 275 425 322

NR UP JP Churk 3x60 180 Existing State 3.50 0 0 0 0 0 0 0 0 0

NR UP Paricha - B 2x210 420 Existing State 3.47 0 0 0 0 0 0 0 0 0

NR UP Paricha - A 2x250 500 Existing State 3.43 0 0 0 0 0 0 0 0 0

NR UP Unchahar -IV TPS lx500 500 Existing Central 3.4 0 275 275 275 275 275 275 275 275

NR Rajasthan VS Lignite Power Pvt Ltd lx135 135 Existing State 3.40 0 0 0 0 0 0 0 0 0

NR UP Bajaj Energy Pvt. Ltd(IPP) 10x45 450 Existing State 3.35 0 0 0 0 0 0 0 0 0

NR Haryana ISTPS Jhajjar 3x500 1500 Existing Central 3.31 0 825 825 825 825 825 825 825 825


NR Rajasthan Shree Cement TPS 2X150 300 Existing State 3.30 0 0 0 0 0 0 0 0 0

NR UP Unchahar -II TPS 2x210 420 Existing Central 3.29 0 231 231 231 231 231 231 231 231

NR UP Unchahar -Ill TPS 1x210 210 Existing Central 3.28 0 116 116 116 116 116 116 116 116

NR UP Unchahar -I TPS 2x210 420 Existing Central 3.27 0 231 231 231 231 231 231 231 231

NR Haryana DCRTPP (Yamuna Nagar) 2x300 600 Existing State 3.27 0 510 510 330 510 510 330 510 386

NR Haryana Jhajjar-CLP (IPP) 2X660 1320 Existing State 3.17 0 1188 1188 726 1188 1162 726 1188 849

NR UP Tanda TPS 4x110 0 Existing Central 3.1 0 0 0 0 0 0 0 0 0

NR UP Lalitpur 3x660 1980 Existing State 2.97 0 0 0 0 0 0 0 0 0

NR Rajasthan Kalisindh 2X600 1200 Existing State 2.96 0 0 0 660 1080 1019 660 1080 844

NR Punjab GOINDWAL (GVK) 2x270 540 Existing State 2.94 0 459 368 297 459 459 297 459 297

NR Punjab Talwandi Saboo 3x660 1980 Existing State 2.85 0 1782 1348 1089 1782 1782 1089 1782 1089

NR Rajasthan Chhbra TPS 4x250 1000 Existing State 2.73 0 850 835 550 850 849 550 850 703

NR Rajasthan Suratgarh TP5 Extension 2x660 1320 UC State 2.73 0 0 0 726 1188 1121 726 1188 928

NR UP Meja lx660 660 Existing State 2.72 0 0 0 363 594 508 363 594 363


N (MW) (Existing/

UC)

NR UP Meja Extension lx660 660 UC State 2.72 0 0 0 363 594 508 363 594 363

NR UP Harduaganj lx660 660 UC State 2.72 0 0 0 363 594 508 0 0 0

NR UP Panki lx660 660 UC State 2.72 0 0 0 363 594 508 0 0 0

NR UP Jawaharpur TPS 2x660 1320 UC State 2.72 0 0 0 726 1188 1016 0 0 0

NR UP OBRA C 2x660 1320 UC State 2.72 0 0 0 0 0 0 0 0 0

NR UP Ghatampur TPP 3x660 1980 UC State 2.72 0 0 0 0 0 0 0 0 0

NR UP Rosa (IPP) 4x300 1200 Existing State 2.64 0 1020 1020 660 1020 924 660 1020 660

NR Rajasthan Kawai 2X660 1320 Existing State 2.61 0 1188 1103 726 1188 1121 726 1188 928

NR UP Mundra APL 2x330 660 Existing State 2.58 0 561 561 363 561 508 363 561 363

NR Delhi Pragati-1 CCGT 1X121 121 Existing State 2.50 0 103 103 103 103 103 103 103 103

NR Delhi Delhi Gas CCGT 4X34 132 Existing State 2.50 0 116 116 116 116 116 116 116 116

NR Rajasthan RajWest 8x135 1080 Existing State 2.50 0 918 902 594 918 917 594 918 759

NR UP Tanda TPS Extension 2x660 1320 UC Central 2.45 0 726 1188 726 1188 726 726 1188 726

NR Rajasthan RAMGARH GT EXT lXll0 110 Existing State 2.35 0 94 92 61 94 93 61 94 77

NR Rajasthan RAMGARH GT EXT lx50 50 Existing State 2.35 0 43 42 28 43 42 28 43 35

NR Rajasthan RAMGARH GT EXT 2x37.5 75 Existing State 2.35 0 64 63 41 64 64 41 64 53

NR Rajasthan RAMGARH GT EXT lx35.5 35.5 Existing State 2.35 0 30 30 20 30 30 20 30 25

NR UP Obra B 5X200 1000 Existing State 2.32 0 850 850 550 850 770 550 850 550

NR Punjab Rajpura 2x700 1400 Existing State 2.26 0 1260 953 770 1260 1260 770 1260 770

NR Rajasthan Chhbra TPS 2x660 1320 Existing State 2.25 0 1188 1103 726 1188 1121 726 1188 928

NR UP Bara 3x660 1980 Existing State 2.22 504 1782 1782 1089 1782 1524 1089 1782 1089

NR UP Anpara - C(IPP) 2x600 1200 Existing State 1.90 660 1080 1080 660 1080 924 660 1080 660

NR UP Karchana 2x600 1200 UC State 1.90 660 1080 1080 660 1080 924 660 1080 660

NR UP Anpara - A 3x210 630 Existing State 1.74 347 536 536 347 536 485 347 536 347

NR UP Anpara - B 2x500 1000 Existing State 1.46 550 850 850 550 850 770 550 850 550

NR UP Singrauli STPS 5x200+2x5 2000 Existing Central 1.41 1100 1700 1700 1100 1700 1700 1100 1700 1700

NR UP Rihand TPS 2x500 +2x 2000 Existing Central 1.35 1100 1700 1700 1100 1700 1700 1100 1700 1700

NR UP Rihand TPS 2x500 1000 Existing Central 1.35 550 850 850 550 850 850 550 850 850

NR Rajasthan Giral LTPS 2xl25 250 Existing State 1.34 138 213 209 138 213 212 138 213 176

NR UP Anpara - D 2x500 1000 Existing State 1.33 550 850 850 550 850 770 550 850 550

NR Rajasthan Barsingsar 2x125 250 Existing Central 1.08 138 213 213 138 213 213 138 213 213

WR Chhattisga KORBA (W) 4x210 0 Existing State 10.00 0 0 0 0 0 0 0 0 0

WR Chhattisga KORBA (E) 4x50 0 Existing State 10.00 0 0 0 0 0 0 0 0 0

WR MAHARASI KORADI 2x210 0 Existing State 10.00 0 0 0 0 0 0 0 0 0

WR MAHARASI Gupta Energy ltd 2x60 0 Existing State 10.00 0 0 0 0 0 0 0 0 0

WR MP SATPURA-II lx200 0 Existing State 10.00 0 0 0 0 0 0 0 0 0

WR MP SATPURA-II lx210 0 Existing State 10.00 0 0 0 0 0 0 0 0 0

WR MAHARASI TROMBAY 2x500 1000 Existing State 4.42 0 0 0 0 0 0 0 0 0

WR Gujarat WANAKBORI 7x210 1470 Existing State 3.97 0 0 0 0 1250 1115 0 1250 1213

WR Gujarat UKAI 2x200 400 Existing State 3.85 0 0 0 0 340 303 0 340 330

WR Gujarat GANDHINAGAR 3x210 630 Existing State 3.85 0 0 0 0 536 478 0 536 520

WR Gujarat OPGS 2x150 300 Existing State 3.80 0 255 195 0 255 228 0 255 248

WR MAHARASI Ward ha Warora Power Co Ltd. 4x135 540 Existing State 3.80 0 0 0 0 0 0 0 0 0

WR Gujarat A.E.Co.(Torrent Power) 2x121 242 Existing State 3.50 0 206 157 0 206 184 0 206 200

WR Gujarat A.E.Co.(Torrent Power) lx120 120 Existing State 3.50 0 102 78 0 102 91 0 102 99


N (MW) (Existing/

UC)

WR MAHARASI PARLI 3x250 750 Existing State 3.50 0 0 0 0 0 0 0 0 0

WR Gujarat SIKKA 2x250 500 Existing State 3.46 0 425 324 0 425 379 0 425 413

WR MAHARASI REL DAHANU 2x250 500 Existing State 3.39 0 0 0 0 0 0 0 0 0

WR MAHARASI Solapur 2*660 1320 Existing Central 3.31 0 0 0 0 0 0 0 0 0

WR MAHARASI NASIK 3x210 630 Existing State 3.27 0 0 0 0 0 0 0 0 0

WR MAHARASI Mihan TPP(Abhijit) 4x61.5 246 Existing State 3.20 0 0 0 0 0 0 0 0 0

WR MAHARASI Uttam Galwa 1x60 60 Existing State 3.20 0 0 0 0 0 0 0 0 0

WR MAHARASI ONGC, Vashi circle 59.6 59.6 Existing State 3.20 0 0 0 0 0 0 0 0 0

WR MAHARASI lndorama 1x49 49 Existing State 3.20 0 0 0 0 0 0 0 0 0

WR MAHARASI Ultratech Cement ltd. 1x46 46 Existing State 3.20 0 0 0 0 0 0 0 0 0

WR MAHARASI Finolex, Ratnagiri 1x43 43 Existing State 3.20 0 0 0 0 0 0 0 0 0

WR MAHARASI ISMT Ltd 40 40 Existing State 3.20 0 0 0 0 0 0 0 0 0

WR MAHARASI JSW Boisar, VashiCircle 1x37.6 37.6 Existing State 3.20 0 0 0 0 0 0 0 0 0

WR MAHARASI Grace Industries Ltd 33 33 Existing State 3.20 0 0 0 0 0 0 0 0 0

WR MAHARASI Topworth Urja 1x30 30 Existing State 3.20 0 0 0 0 0 0 0 0 0

WR MAHARASI RCF,, Pen circle 30 30 Existing State 3.20 0 0 0 0 0 0 0 0 0

WR MAHARASI Suryalakshmi Cotton & Mills Ltd 25 25 Existing State 3.20 0 0 0 0 0 0 0 0 0

WR MAHARASI Reliance Patalganga 20 20 Existing State 3.20 0 0 0 0 0 0 0 0 0

WR MAHARASI Siddhabali lspat, Chandrapur Circle 0 20 Existing State 3.20 0 0 0 0 0 0 0 0 0

WR MAHARASI Prithvi Ferro Alloys Pvt. Ltd 18 18 Existing State 3.20 0 0 0 0 0 0 0 0 0

WR MAHARASI Sunflag , Bhandara Circle 15 15 Existing State 3.20 0 0 0 0 0 0 0 0 0

WR MAHARASI Gopani Chandrapur circle 12 12 Existing State 3.20 0 0 0 0 0 0 0 0 0

WR MAHARASI Vayunandana Power ltd 1x10 10 Existing State 3.20 0 0 0 0 0 0 0 0 0

WR MAHARASI BILTPower,Chandrapur circle 10 10 Existing State 3.20 0 0 0 0 0 0 0 0 0

WR MAHARASI RPL URJA YEOTMAL 0 10 Existing State 3.20 0 0 0 0 0 0 0 0 0

WR MAHARASI BILT Power, Baramati ., circle 5 5 Existing State 3.20 0 0 0 0 0 0 0 0 0

WR MAHARASI Technocraft Industries, Kalyan Circle 5 5 Existing State 3.20 0 0 0 0 0 0 0 0 0

WR MAHARASI IG Petro, Vashi circle 4.2 4.2 Existing State 3.20 0 0 0 0 0 0 0 0 0

WR MAHARASI Mauda 2x500+2x6 2320 Existing Central 3.18 0 0 0 0 0 0 0 0 0



WR MAHARASI IBL (India Bulls Limited, Amravati) Ratan I 5x270 1350 Existing State 3.03 0 0 0 0 0 0 0 0 0

WR MAHARASI Ratan India Pvt Ltd.(Sinner) 2x270 540 Existing State 3.03 0 0 0 0 0 0 0 0 0

WR Gujarat KUTCH LIGNITE 2x75 150 Existing State 3.02 0 128 97 0 128 114 0 128 124

WR MAHARASI PARLI 2x210 420 Existing State 3.02 0 0 0 0 0 0 0 0 0

WR MAHARASI lndrajeet 1x77 77 Existing State 3.00 0 0 0 0 0 0 0 0 0

WR Gujarat BECL 2x250 500 Existing State 2.93 0 425 324 0 425 379 0 425 413

WR Gujarat KUTCH LIGNITE 2x70 140 Existing State 2.84 0 119 91 0 119 106 0 119 116

WR MAHARASI BHUSAWAL 2x500 1000 Existing State 2.74 0 0 0 0 0 0 0 0 0

WR MAHARASI BHUSAWAL 2x210 420 Existing State 2.74 0 0 0 0 0 0 0 0 0

WR MP SSTP(Shri Singhaji Thermal Power Station 2x600 1200 Existing State 2.74 0 0 0 0 1080 932 0 1080 901

WR MP SSTP(Shri Singhaji Thermal Power Station 2x600 1200 Existing State 2.74 0 0 0 0 0 0 0 1080 901

WR MAHARASI KHAPERKHEDA 1x500 500 Existing State 2.73 0 0 0 0 0 0 0 0 0

WR MAHARASI KHAPERKHEDA 4x210 840 Existing State 2.73 0 0 0 0 0 0 0 0 0

WR MP Moserbaer(Annupur TPP) 2x600 1200 Existing IPP 2.61 0 0 0 0 0 0 0 0 0

WR Gujarat Essar Vadinar 2x600 1200 Existing State 2.60 0 1080 778 0 1080 910 661 1080 990


N (MW) (Existing/

UC)

WR MP SATPURA-III & IV 2x210 420 Existing State 2.53 0 357 336 0 357 326 306 357 315

WR Chhatisgar KSKMahanadi,IPP(Unit 1,2 and Unit 4) 3x600 1800 Existing IPP 2.47 0 0 0 0 1620 990 990 1620 990

WR Chhatisgar KSKMahanadi,IPP(Unit 3,5 and Unit 6) 3x600 1800 UC IPP 2.47 0 0 0 0 987 990 990 1620 990

WR Gujarat *Mundra(APL) **4*330+ 3960 Existing IPP 2.47 0 0 0 0 0 0 2178 3564 2178

WR Gujarat Mundra APL 2X330 660 Existing IPP 2.47 0 0 0 0 0 0 363 561 363

WR MAHARASI Vidharbha Industry, Butibori 2x300 600 Existing State 2.45 0 0 0 0 0 0 0 0 0

WR MAHARASI IEPL (Ideal Energy Power Ltd, Belapur) lx270 270 Existing State 2.45 0 0 0 0 0 0 0 0 0

WR MAHARASI APML,Tiroda-Ph-I(400 kV) 3x660 1980 Existing State 2.44 0 0 0 0 1782 1589 1218 1782 1546

WR MAHARASI APML,Tiroda-Ph-II( 765 kV) 2x660 1320 Existing State 2.44 0 0 0 0 0 0 812 1188 1030

WR Chhatisgar BALCO 4x300 1200 Existing IPP 2.34 0 0 0 0 1020 660 660 1020 660

WR MAHARASI GMR Warora 2x300 600 Existing IPP 2.33 0 0 0 0 510 501 330 510 330

WR MAHARASI Dhariwal-I& II (STU) 1x300 300 Existing IPP 2.33 0 0 0 0 255 165 165 255 165

WR Chhatisgar Lara 1 *800+1 *! 1600 Existing Central 2.33 0 0 0 0 1440 880 880 1440 880

WR MAHARASI CHANDRAPUR 3x500 1500 Existing State 2.31 0 1275 1275 0 1275 1204 922 1275 1171

WR MAHARASI CHANDRAPUR 2x210 420 Existing State 2.31 0 0 0 0 357 337 258 357 328

WR MAHARASI KORADI 3x660 1980 Existing State 2.26 0 1782 1782 0 1782 1589 1218 1782 1546

WR MAHARASI CHANDRAPUR Extension 2x500 1000 Existing State 2.24 0 850 850 0 850 803 615 850 781

WR MAHARASI PARAS 2x250 500 Existing State 2.24 0 425 425 0 425 401 307 425 390

WR MP BLA POWER lx45{35%) 45 Existing State 2.20 0 38 36 0 38 35 33 38 34

WR MP S GANDHI TPS Ill lx500 500 Existing State 2.17 0 425 400 0 425 388 365 425 376

WR MP S GANDHI TPS I & II 4x210 840 Existing State 2.17 0 714 671 0 714 652 613 714 631

WR MP AMARKANTAK 1X210 210 Existing State 2.16 0 179 168 0 179 163 153 179 158

WR MP AMARKANTAK 2X120 240 Existing State 2.16 0 204 192 0 204 186 175 204 180

WR MP Jhabua Power ( Avanta) 2x600 1200 Existing IPP 2.14 0 0 0 0 1080 1080 660 1080 660

WR MP SATPURA-III & IV 2x250 500 Existing State 2.09 0 425 400 0 425 388 365 425 376

WR MAHARASI JSW Ratnagiri(Jaigad) 4x300 1200 Existing State 2.07 0 1020 1020 34 1020 963 738 1020 937

WR Chhatisgar LANCO-Amarkantak 2x300 600 Existing IPP 1.99 0 0 0 330 510 510 330 510 330

WR Chhatisgar DB Power,IPP 2x600 1200 Existing IPP 1.96 0 0 0 660 1080 1080 660 1080 663

WR Chhatisgar RKM Powergrn ltd 4x360 1440 Existing IPP 1.96 0 0 0 792 1224 1224 792 1224 792

WR MAHARASI TROMBAY 1X250 250 Existing State 1.92 0 213 213 138 213 201 154 213 195

WR MP Jaypee Bina 2x250 (70° 500 Existing IPP 1.9 0 425 425 275 425 425 275 425 425

WR MP Gad a rwa ra STPS 1 *800+1 *! 1600 UC Central 1.9 0 1440 1440 880 1440 1440 880 1440 1440

WR MP Khargone TPP 2*660 1320 UC Central 1.9 0 372 1188 726 1188 1188 726 1188 1188

WR Chhatisgar Maruti Clean CoalPower Ltd 1x300 300 Existing IPP 1.85 0 255 255 165 255 255 165 255 255

WR Chhatisgar JINDAL Stage I, 4x250 1000 Existing IPP 1.8 0 850 850 550 850 850 550 850 850

WR Chhatisgar JINDAL(JSPL TPP)unit3 DCPP{IPP) 4x135 540 Existing IPP 1.8 0 459 459 297 459 459 297 459 459

WR Chhatisgar Spectrum Coal Private Ltd. 2x50 100 Existing IPP 1.8 0 85 85 55 85 85 55 85 85

WR Chhatisgar ESSAR Mahan 2x600 1200 Existing IPP 1.8 0 1080 1080 660 1080 1080 660 1080 1080

WR Chhatisgar GMR-Chhatisgarh Energy Ltd 2x685 1370 Existing IPP 1.8 0 1233 1233 754 1233 1233 754 1233 1233

WR Chhatisgar KPCL 2x600 1200 UC IPP 1.8 0 1080 1080 660 1080 1080 660 1080 1080

WR Chhatisgar Vandana Vidyut,IPP lx135 135 Existing IPP 1.8 0 115 115 74 115 115 74 115 115

WR Chhatisgar TRN Energy 2x300 600 Existing IPP 1.8 0 510 510 330 510 510 330 510 510

WR Chhatisgar NSPCL Bhilai TPP(*) 2x250 500 Existing Central 1.8 0 425 425 275 425 425 275 425 425

WR Chhattisga KORBA (E) ext-I 2x250 500 Existing State 1.80 0 0 0 0 0 0 275 425 318

WR Chhattisga KORBA (E) 2x120 240 Existing State 1.80 0 0 0 0 0 0 0 0 0

WR Chhattisga SVPL TPP lx63 63 Existing State 1.80 0 0 0 0 0 0 0 0 0


N (MW) (Existing/

UC)

WR Gujarat *CGPL **3x830 + 4150 Existing IPP 1.76 1264 3528 3528 2283 3528 3528 2283 3528 3528

WR MP VSTPS 6x210+2x5 3260 Existing Central 1.68 1793 2771 2771 1793 2771 2771 1793 2771 2771

WR MP VSTPS 3x500 1500 Existing Central 1.68 825 1275 1275 825 1275 1275 825 1275 1275

WR Chhattisga Marwa TPS 2x500 1000 Existing State 1.61 550 850 801 550 850 850 550 850 636

WR Chhatisgar SKS 2x300+2X, 1200 Existing IPP 1.6 660 1020 1020 660 1020 1020 660 1020 1020

WR Gujarat SURAT LIGNITE 4x125 500 Existing State 1.52 275 425 324 275 425 379 296 425 413

WR Chhatisgar Sipat STPS 2X500+3Xl 2980 Existing Central 1.5 1639 2682 2682 1639 2682 2682 1639 2682 2682

WR Chhatisgar KSTPS 3x200+3x5 2600 Existing Central 1.45 1430 2210 2210 1430 2210 2210 1430 2210 2210

WR Chhatisgar JPL Stage II,IPP 4x600 2400 Existing IPP 1.43 1320 2160 2160 1320 2160 2160 1320 2160 2160

WR Chhatisgar Korba West PowerCorp. Ltd. {IPP) lx600 600 Existing IPP 1.31 330 540 540 330 540 540 330 540 540

WR MP *SASAN (Unit 1-6) **6x660 ( 3960 Existing IPP 1.29 2178 3564 3564 2178 3564 3564 2178 3564 3564

WR Gujarat AKRIMOTA 2x125 250 Existing State 1.25 138 213 162 138 213 190 148 213 206

WR Chhattisga KORBA (W) lx500 500 Existing State 1.20 275 425 400 275 425 425 275 425 318

WR Chhatisgar ACBIL,IPP 2x135 270 Existing IPP 0.74 149 230 230 149 230 230 149 230 230

WR Chhatisgar ACBIL,IPP 2*30 60 Existing IPP 0.74 33 51 51 33 51 51 33 51 51

WR Chhatisgar JP Nigri 2x660 1320 Existing IPP 0.59 726 1188 1188 726 1188 1188 726 1188 1188

SR Andhra Pre Muddanur 5 X 210 1050 Existing State 3.85 0 0 0 0 0 0 0 893 893

SR Andhra Pre RTTP IV Stage l x600 600 Existing State 3.66 0 0 0 0 540 441 0 540 511

SR Andhra Pre Vijayawada lx 500 500 Existing State 3.66 0 0 0 0 425 368 0 425 425

SR Tamil Nad1 Mettur TPS St-Ill l x 600 600 Existing State 3.23 0 540 454 0 540 499 0 540 539

SR Tamil Nad1 North Chennai 2 x 600 1200 Existing State 3.23 0 1080 909 0 1080 998 0 1080 1077

SR Tamil Nad1 North Chennai St-Ill {2015-16) l x 800 800 UC State 3.23 0 720 606 0 720 666 0 720 718

SR Tamil Nad1 UPPUR 2 x 800 1600 UC State 3.23 0 1440 1212 0 1440 1331 0 1440 1436

SR Tamil Nad1 Ennore Expn TPS lx 660 660 UC State 3.23 0 594 500 0 594 549 0 594 592

SR Tamil Nad1 Ennore (SEZ) TPS at Kaltupalli 2 x 660 1320 UC State 3.23 0 1188 1000 0 1188 1098 663 1188 1185

SR Tamil Nad1 Udangudi TPS (TNEB) 2 x 660 1320 UC State 3.23 0 0 0 0 1188 1098 804 1188 1185

SR Tamil Nad1 SEPC lx525 525 UC State 3.23 0 0 0 0 0 0 320 446 446

SR Andhra Pre Krishnapattanam Stage - I 2x800 1600 Existing State 3.21 0 1440 1171 0 1440 1177 880 1440 1364

SR Andhra Pre Krishnapatnam TPP (JVP) Stage II {1x800 lx800 800 UC State 3.21 0 720 586 0 720 588 440 720 682

SR Karnataka UPCL 2 x 600 1200 Existing State 3.15 0 1080 849 0 1080 860 922 1080 1080

SR Karnataka Bellary lx700 700 Existing State 2.85 0 630 495 0 630 502 538 630 630

SR Karnataka Bellary 2 x 500 1000 Existing State 2.85 0 850 707 0 850 717 768 850 850

SR Telangana Kothagudem St-VII l x 800 800 Existing State 2.81 0 720 440 0 720 540 440 720 505

SR Telangana Kothagudem St-VI 1 X 500 500 Existing State 2.81 0 425 275 0 425 338 275 425 316

SR Telangana Yaadadri (Damaracherla) TPP 5x800 4000 UC State 2.81 0 3600 2200 0 0 0 2200 3600 2525

SR Karnataka Yeramars TPS 2 x 800 1600 Existing State 2.80 0 1440 1132 0 1440 1146 1229 1440 1440

SR Tamil Nad1 OPGC 2x360 720 UC State 2.78 0 612 545 0 612 599 439 612 612

SR Andhra Pre Hinduja 2 X 520 1040 Existing State 2.76 0 884 761 0 884 765 572 884 884

SR Telangana Kakatiya TPP lx500 500 Existing State 2.62 0 425 275 0 425 338 275 425 316

SR Telangana Singareni 2x600 1200 Existing State 2.54 0 1080 660 0 1080 811 660 1080 757

SR Telangana Kakatiya TPP lx600 600 Existing State 2.37 0 540 330 0 540 405 330 540 379

SR Telangana Bhadradri(Manuguru) 4x270 1080 UC State 2.33 97 918 594 0 918 730 594 918 682

SR Andhra Pre Vijayawada 6 X 210 0 Existing State 10.00 0 0 0 0 0 0 0 0 0

SR Karnataka Raichur 7 X 210 0 Existing State 10.00 0 0 0 0 0 0 0 0 0

SR Karnataka Raichur 1 X 250 0 Existing State 10.00 0 0 0 0 0 0 0 0 0


N (MW) (Existing/

UC)

SR Tamil Nad1 North Chennai 3x210 0 Existing State 10.00 0 0 0 0 0 0 0 0 0

SR Tamil Nad1 Tuticorin 5 X 210 0 Existing State 10.00 0 0 0 0 0 0 0 0 0

SR Tamil Nad1 Mettur 4 X 210 0 Existing State 10.00 0 0 0 0 0 0 0 0 0

SR Tamil Nad1 Neyveli -I NLC 6x50 0 Existing State 10.00 0 0 0 0 0 0 0 0 0

SR Tamil Nad1 Neyveli -I NLC 3X100 0 Existing State 10.00 0 0 0 0 0 0 0 0 0

SR Tamil Nad1 Neyveli Zero (STCMS) l X 250 0 Existing State 10.00 0 0 0 0 0 0 0 0 0

SR Telangana Kothagudem D (V Stage) 2 X 250 0 Existing State 10.00 0 0 0 0 0 0 0 0 0

SR Telangana Ramagundam B 1 X 62.5 0 Existing State 10.00 0 0 0 0 0 0 0 0 0

SR Karnataka Kudgi TPS 0 2400 Existing Central 3.84 0 0 0 637 1320 1320 1320 1320 1320

SR Tamil Nad1 NTECL Vallur TPS 0 1500 Existing Central 3.74 0 0 0 825 825 825 825 825 825

SR Tamil Nad1 Coastal Energen 2x600 1200 Existing IPP 3.31 0 0 0 660 660 660 660 660 660

SR Andhra Pre Simhadri stg I 0 1000 Existing Central 3.28 0 0 0 550 550 550 550 550 550

SR Andhra Pre Simhadri stg II 0 1000 Existing Central 3.24 0 0 0 550 550 550 550 550 550

SR Tamil Nad1 NTPL - Tuticorin JV 0 1000 Existing Central 3.15 0 0 0 550 550 550 550 550 550

SR Andhra Pre Vijayawada TPS Stage V (lx800 MW) lx800 800 UC State 3.15 440 720 586 440 720 588 440 720 682

SR Karnataka Torangalu (Jindal) 4 x 300 1200 Existing State 3.15 0 0 0 660 1020 860 922 1020 1020

SR Karnataka Torangalu (Jindal) 2 x 130 260 Existing State 3.15 0 0 0 143 221 186 200 221 221

SR Tamil Nad1 IL&FS Tamil Nadu 2x600 1200 Existing IPP 2.88 660 660 660 660 660 660 660 660 660

SR Telangana RSTPS St.I & II {U-1 to U-6) 0 2100 Existing Central 2.68 1155 1155 1155 1155 1155 1155 1155 1155 1155

SR Tamil Nad1 NLC TS-II Stgl 0 0 Existing Central 2.66 0 0 0 0 0 0 0 0 0

SR Tamil Nad1 NLC TS-II Stg.2 0 0 Existing Central 2.66 0 0 0 0 0 0 0 0 0

SR Telangana RSTPS St. I I I (U-7) 0 500 Existing Central 2.62 275 275 275 275 275 275 275 275 275

SR Tamil Nad1 NNTPS (Replacement) 0 1000 Existing Central 2.6 550 550 850 550 550 550 550 850 550

SR Andhra Pre NCC 2x660 1320 Existing IPP 2.6 726 726 1139 726 726 726 726 1188 726

SR Andhra Pre Simhapuri 4x150 600 Existing IPP 2.6 330 330 330 330 330 330 330 510 330

SR Andhra Pre Meenakshi 2x150+2x3 1000 Existing IPP 2.6 550 550 550 550 550 550 550 850 550

SR Tamil Nad1 NLC TPS-II Exp. Units 1 & 2 0 500 Existing Central 2.52 275 275 425 275 275 275 275 425 275

SR Tamil Nad1 NLC TPS-I Exp. 2x210 0 Existing Central 2.42 0 0 0 0 0 0 0 0 0

SR Andhra Pre Thermal Powertech. 2x660 1320 Existing IPP 2.24 726 726 1188 726 1188 1188 726 1188 726

ER Bihar BARAUNI {2x110) 0 Existing State 10.00 0 0 0 0 0 0 0 0 0

ER Bihar MUZAFFARPUR (2x110) 0 Existing State 10.00 0 0 0 0 0 0 0 0 0

ER Jharkhand TENUGHAT (2x210) 0 Existing State 10.00 0 0 0 0 0 0 0 0 0

ER West Beng BANDEL {4x82.5) 0 Existing State 10.00 0 0 0 0 0 0 0 0 0

ER West Beng BANDEL {1x210) 0 Existing State 10.00 0 0 0 0 0 0 0 0 0

ER West Beng BAKRESHWAR {5x210) 0 Existing State 10.00 0 0 0 0 0 0 0 0 0

ER West Beng TITAGARH {4x60) 0 Existing State 10.00 0 0 0 0 0 0 0 0 0

ER Jharkhand Patratu (3x800) 0 UC Central 4 0 0 0 0 0 0 0 0 0

ER Bihar Buxar {2X660) 0 UC Central 4 0 0 0 0 0 0 0 0 0

ER West Beng KOLAGHAT {6x210) 1260 Existing State 3.85 0 0 0 0 0 0 0 0 0

ER West Beng DPL (lx110) 110 Existing State 3.50 0 0 0 0 0 0 0 0 0

ER West Beng IPCL-Haldia 3x150 450 Existing State 3.50 0 0 0 0 0 0 0 0 0

ER West Beng SOUTHERN {2x67.5) 135 Existing State 3.50 0 0 0 0 0 0 0 0 0

ER West Beng SAGARDIGHI {2x300) 600 Existing State 3.43 0 0 0 0 0 0 0 0 0

ER West Beng SAGARDIGHI (2x500) 1000 Existing State 3.26 0 850 732 0 850 685 0 850 596

ER West Beng MEJIA {4x210+25 1340 Existing Central 2.89 0 0 0 0 0 0 0 0 0


N (MW) (Existing/

UC)

ER West Beng MEJIA-II (2x500) 1000 Existing Central 2.89 0 0 0 0 0 0 0 0 0

ER West Beng DPL (1X250) 250 Existing State 2.80 0 213 183 0 213 171 0 213 149

ER West Beng HEL (2x300) 600 Existing State 2.80 0 510 439 0 510 411 0 510 358

ER West Beng BUDGE-BUDGE (3x250) 750 Existing State 2.80 0 638 549 0 638 514 0 638 447

ER Jharkhand MPL (2x525) 1050 Existing IPP 2.79 0 0 0 0 0 0 0 0 0

ER Bihar KBUNL (2x195) 390 Existing Central 2.73 0 0 0 0 0 0 0 0 0

ER West Beng DPL (1X300) 300 Existing State 2.72 0 255 220 0 255 205 0 255 179

ER Jharkhand KODERMA (2x500) 1000 Existing Central 2.68 0 0 0 0 0 0 0 0 0

ER West Beng FSTPP-I & II (3x200+2x 1600 Existing Central 2.65 0 0 0 0 0 0 0 0 0

ER West Beng SANTALDIH (2x250) 500 Existing State 2.62 0 425 366 0 425 342 241 425 298

ER Bihar NABINAGAR-I (4x250) 1000 Existing Central 2.6 0 0 0 0 0 0 550 850 550

ER Bihar Nabinagar-2 3x660 1980 UC Central 2.6 0 0 0 0 0 0 1089 1782 1089

ER Jharkhand North Karanpura 3x660 1980 UC Central 2.6 0 0 0 0 0 0 1089 1782 1089

ER Jharkhand BOKARO'B' (lx210) 0 Existing Central 2.6 0 0 0 0 0 0 0 0 0

ER Jharkhand CHANDRAPURA (2x250) 500 Existing Central 2.6 0 0 0 0 0 0 275 64 275

ER West Beng WARIA (lx210) 210 Existing Central 2.6 0 0 0 0 0 0 0 0 0

ER Jharkhand Bokaro-A' (lx500) 500 Existing Central 2.6 0 0 0 0 0 0 0 0 0

ER West Beng FSTPP-III (lx500) 500 Existing Central 2.57 0 0 0 0 0 0 275 425 275

ER West Beng RTPS (2x600) 1200 Existing Central 2.57 0 0 0 0 0 0 660 1080 660

ER Bihar BARH (2x660) 1320 Existing Central 2.56 0 0 0 0 0 0 726 1188 726

ER Bihar Barh-1 3x660 1980 UC Central 2.56 0 0 0 0 0 0 1089 1782 1089

ER Odisha OPGC U-1 2x660 660 Existing State 2.55 0 0 0 0 0 0 0 0 0

ER Bihar KhSTPP-I (4x210) 840 Existing Central 2.42 0 462 714 0 714 462 462 714 462

ER Bihar KhSTPP-II (3x500) 1500 Existing Central 2.29 0 825 1275 0 1275 1275 825 1275 825

ER Bihar Buxar 2x660 1320 UC State 2.28 0 1188 726 0 1188 726 726 1188 726

ER Jharkhand PUVNL 3x800 2400 UC State 2.20 871 2160 1320 972 2160 1320 1320 2160 1320

ER Odisha Talcher (4x500) 2000 Existing Central 2.19 1100 1100 1700 1100 1700 1700 1100 1700 1100

ER West Beng ANDAL (2x500) 1000 Existing Central 2.17 550 550 850 550 850 850 550 850 550

ER Odisha Darlipalli 2x800 1600 UC Central 2.1 880 880 1440 880 1440 1440 880 1440 880

ER Odisha GMR (lx350) 350 Existing State 2.10 0 0 0 0 0 0 0 0 0

ER Odisha Talcher (2x500) 1000 Existing Central 2.01 550 550 850 550 850 850 550 850 550

ER Odisha VEDANTA (lx600) 600 Existing State 1.82 330 540 534 330 540 359 330 540 353

ER Odisha JITPL (2x600) 1200 Existing IPP 1.8 660 1080 1080 660 1080 1080 660 1080 1080

ER Odisha IBEUL U-1 (2x350) 0 Existing IPP 1.8 0 0 0 0 0 0 0 0 0

ER Odisha IBEUL U-2 (2x350) 350 UC IPP 1.8 193 298 298 193 298 298 193 298 298

ER Odisha OPGC U-2 2x660 660 UC IPP 1.8 363 594 594 363 594 594 363 594 594

ER Odisha I8.TPS (2x210) 420 Existing State 1.80 231 357 357 231 357 251 231 357 247

ER Odisha TTPS -II (2x110) 220 Existing State 1.80 121 187 187 121 187 131 121 187 129

ER Odisha TTPS -I (4x62.S) 240 Existing State 1.80 138 213 213 138 213 143 138 213 141

ER Jharkhand ADHUNIK (2x270) 540 Existing IPP 1.75 297 459 459 297 459 459 297 459 459

ER Odisha GKEL (2x350) 700 Existing IPP 1.5 385 595 595 385 595 595 385 595 595

Scenario-1

Scenario-2

Scenario-3

Scenario-4

Scenario-5

Scenario-6

Scenario-7

Scenario-8

Scenario-9

भारत सरकार वि%द्युत मंत्रालय केंद्र ीय वि% द्य ुत

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