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6 Session 3B Transmission Ravinder

Apr 10, 2018

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    PRESENTATION ON

    TRANSMISSION SYSTEM REQUIREMENT

    FOR THE 12TH PLAN ( 20012-17)

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    TRANSMISSION CORRIDORS PLANNED

    1. SOUTHERN REGION2. WESTERN REGION

    3. EASTERN REGION

    4. NORTHERN REGION

    i. Uttranchal

    ii. Rabi Basin

    iii. Satluj Basin

    iv. Beas Basin5. SIKKIM

    http://../Local%20Settings/Temp/notes6030C8/SR.pdfhttp://../Local%20Settings/Temp/notes6030C8/WR.pdfhttp://../Local%20Settings/Temp/notes6030C8/EASTERN%20REGION.pdfhttp://../Local%20Settings/Temp/notes6030C8/Uttaranchal.pdfhttp://../Local%20Settings/Temp/notes6030C8/RABI%20BASIN.pdfhttp://../Local%20Settings/Temp/notes6030C8/satluj.pdfhttp://../Local%20Settings/Temp/notes6030C8/BEAS%20BASIN.pdfhttp://../Local%20Settings/Temp/notes6030C8/sikkim.pdfhttp://../Local%20Settings/Temp/sikkim-V.pdfhttp://../Local%20Settings/Temp/sikkim-V.pdfhttp://../Local%20Settings/Temp/notes6030C8/sikkim.pdfhttp://../Local%20Settings/Temp/notes6030C8/BEAS%20BASIN.pdfhttp://../Local%20Settings/Temp/notes6030C8/satluj.pdfhttp://../Local%20Settings/Temp/notes6030C8/RABI%20BASIN.pdfhttp://../Local%20Settings/Temp/notes6030C8/Uttaranchal.pdfhttp://../Local%20Settings/Temp/notes6030C8/EASTERN%20REGION.pdfhttp://../Local%20Settings/Temp/notes6030C8/WR.pdfhttp://../Local%20Settings/Temp/notes6030C8/SR.pdf
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    Expected Transmission Requirement 2012-17

    Expected Transmission Requirement All India

    +/- 800 kV HVDC Bipole Projects, 6000 MW 2 to 3

    +/- 600 kV HVDC Bipole Projects, 4000 MW 1

    HVDC Bipole +/- 800 kV ckm 4000

    HVDC Bipole +/- 600 kV ckm 1000

    765/400 kV substation nos. 40 to 50

    765 kV Transmission Lines ckm 25,000 to 30,000

    765/400 kV MVA 1,10,000

    400 kV Transmission Line ckm ( 40% quad, 60% TM) 50,000400/220 kV , 400/132 kV (MVA) 80,000

    220 kV Transmission Line ckm 40,000

    220/132, 220/110 95,000

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    Existing Transmission Lines and expansion

    during 2012-17 (in ckm)

    Transmissionlines

    Existing(ckm) by 10th

    plan

    Additions11th plan

    Total byMarch2012

    Estimatedadditionsin12th plan

    765 kV 2184 5428 7612 25,000 to30,000

    HVDC 500 kV 5872 1606 7478

    HVDC800/600 kV

    0 3600 3600 5000

    400 kV 75722 49278 12500050,000

    220 kV 114629 35371 150000 40,000

    Total ckm 198569 95283 293852 155,000 to180,000

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    Existing HVDC/Substation capacity and expansion

    during 2012-17 (MVA/MW)

    Substation ExistingMVA/MW by 10th

    plan

    Additions 11th

    plan Total byMarch 2012 Estimatedadditions in12th

    plan

    HVDC BTB 3000 500 3500 0

    HVDC

    Bipole+Monopole

    5200 5500 10700 16,000 to 22,000

    Total HVDC terminalcapacity

    8200 6000 14200 16,000 to 22,000

    765 kV 0 53000 53000 1,10,000

    400 kV 92942 52058 145000 80,000

    230/220 kV 156497 73503 230000 95,000

    Total 249439 178561 428000 295,000

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    Details of Inter-Regional Capacity Existingand Planned for 11th & 12th Plan

    System By 10th

    plan Additions11th plan By 11th

    Plan Additions in12th Plan By 12th

    Plan

    ER-SR 3130 500 3630 4200 7830

    ER-NR 3430 8700 12130 5900 18030

    ER-WR 1790 4700 6490 10500 16990ER-NER 1260 1600 2860 0 2860

    NR-WR 2120 2100 4220 10200 14420

    WR-SR 1720 1000 2720 6300 9020

    NER/ER-NR/WR

    0 6000 6000 0 6000

    132 /110 kV 600 0 600 0 600

    TOTAL 14050 24600 38650 37100 75750

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    EXPECTED REQUIREMENT OF INSULATORS FORTRANSMISSION LINES 2012-17

    Transmission line Insulator Discs (lakhs)

    +/- 800 kV HVDC 48

    765 kV 260

    400 kV 300

    220 kV 100

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    Expected Requirement of 765 kV Equipment and Material

    Quantity

    765 kV 500 MVA 1phase Transformer (nos.) 210

    765 kV 333 MVA 1 phase Transformer (nos.) 70

    80 MVAr 1 phase Reactors (nos) 480

    765 kV bays (nos.) 280

    765 kV CB (sets) 420

    765 kV Current Transformers (sets) 560

    765 kV CVTs (sets) 240765 kV Isolators (sets) 1100

    765 kV LAs (sets) 280

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    Expected Requirement of 400 kV Equipment and Material

    Quantity

    400 kV 500 MVA 3 phase Transformer (nos.) 70

    400 kV 315 MVA 3 phase Transformer (nos.) 150

    50 MVAr 3 phase Reactors (nos) 440

    400 kV bays (nos.) 660

    400 kV CB (sets) 1000

    400 kV Current Transformers (sets) 1300

    400 kV CVTs (sets) 880400 kV Isolators (sets) 2600

    400 kV LAs (sets) 660

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    Expected Requirement of 220 kV S/S Equipment

    (Number)

    Quantity220 kV 160 MVA 3 phase Transformer (nos.) 600

    220 kV bays (nos.) 2400

    220 kV Circuit Breakers (sets) 2400220 kV Current Transformers (sets) 2400

    220 kV CVTs (sets) 3100

    220 kV Isolators (sets) 9600

    220 kV LAs(sets) 2400

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    Acquisition of Land and ROW Issues

    ROW and acquisition of land are major hurdles in

    development of transmission system. The problem is more

    acute in the urban areas.

    Problem of land acquisition can be mitigated by going for GISsubstations. Since Indian market is price sensitive, if GIS

    manufacturers bring down prices further there is great scope

    for GIS switchgear in the Indian transmission and sub-

    transmission market. Similarly there is considerable scope formarketing underground EHV cables at competitive prices.

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    Acquisition of Land and ROW Issues

    ROW issue to be mitigated through increasing Density ofTransmission through

    UHV AC/DC Lines

    FACTS High temperature endurance conductor

    Multi-circuit lines

    High surge Impedance Loading (HSIL) lines.

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    Compression of Execution Time

    Reduction of Time of Execution

    through GIS, GPS based line

    route survey

    Standardization of Designs

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    Standardization of Tower Designs Testing of Towers is a time consuming process taking 6-12

    months

    Delay have been observed in some of the projects where designswere in contractorss scope due to delay in testing of towers

    Design & testing activity can be taken up by utility in advance orparallely to project approval activities

    Design may be standardized for different wind zones / differentvoltages so that repeated activities can be avoided

    Tested design to be given to the contractors after placement ofaward. Though quantities shall be on tonnage basis to avoid non-sequential supply provisions for payment on completed tower

    basis should be kept.

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    Standardization of Designs

    Designs & Drawing may also be standardized to the extent

    possible for the following:

    Insulator , Hardware fittings, accessories for Transmission Line

    Substation structures

    Substation equipments like CB, CT, CVT, LA, Insulators etc.

    Control room building, other buildings, colony

    In order to reduce problem of land acquisition and related R&R

    efforts should be made to reduce substation land requirement by

    compact layouts, compact switchgear & GIS substation.

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    Online Testing Facility for Transformers

    All high-capacity EHV transformers installed in India are

    presently being sent to KEMA, Netherlands-based electrical

    equipment testing organisation, before being commissioned. This

    leads to an average delay of 5-9 months in the commissioning

    schedule

    Under initiative of MoP JV of four Public Sector Undertakings

    (PSUs)- NTPC,NHPC,DVC& PGCIL has been formed to

    establish a domestic on line testing facility to perform short circuit

    test on EHV Transformer upto 400 kV.

    The testing facility is expected to come up in two years time

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