SOUTHERN REGIONAL LOAD DESPATCH CENTRE

1SOUTHERN REGIONAL LOAD DESPATCH CENTRE

POWER GRID CORPORATION OF INDIA LIMITED

WELCOME

TO

SHRI U. C. MISRA Director (Personnel)

2SOUTHERN REGIONAL LOAD DESPATCH CENTRE

POWER GRID CORPORATION OF INDIA LIMITED

3

PRESENTATION OVERVIEW

SOUTHERN REGIONAL GRID – OVERVIEW

SPECIFIC IMPROVEMENTS IN RECENT PAST

OPERATIONAL EXCELLANCE

ABT – UI POOL IN SR GRID

MANPOWER AND BUDGET

4

THANK YOU

5

SOUTHERN REGIONAL GRID

OVERVIEW

6

SOUTHERN REGION – GEOGRAPHY

ANDHRA PRADESH

TAMIL NADU

KARNATAKA

KE

RA

LA

POPULATION :- 22.5 CRORES ( 22% OF INDIA)

AREA :- 651 (‘000 SQ KM)(19% OF INDIA)

INSTALLED CAPACITY:- 36,921 MW(29.0%)

WEATHER :- South-west monsoon

North-east monsoon

SEA COAST :- AROUND 4000 KM

7

SR STATES – POWER SYSTEM STATISTICSANDHRA PRADESH

INSTALLED CAPACITY – 8944 MW

MAX DEMAND MET – 8241 MW

DAILY CONSUMPTION MAX – 171 MU

DAILY CONSUMPTION AVG – 142 MU

CONSUMER PROFILE –

INDS -27%, DOM-22%, COMM-5%, IRRI-39% & OTHERS-7%

KARNATAKA

INSTALLED CAPACITY – 6180 MW

MAX DEMAND MET – 5612 MW

DAILY CONSUMPTION MAX – 125 MU

DAILY CONSUMPTION AVG – 95 MU

CONSUMER PROFILE –

INDS -26%, DOM-19%, COMM-7%, IRRI-39% & OTHERS-9%

KERALA

INSTALLED CAPACITY – 2284 MW

MAX DEMAND MET – 2602 MW

DAILY CONSUMPTION MAX – 41 MU

DAILY CONSUMPTION AVG – 34 MU

CONSUMER PROFILE –

INDS -34%, DOM-44%, COMM-13%, IRRI-2%& OTHERS-7%

TAMIL NADU

INSTALLED CAPACITY – 10015 MW

MAX DEMAND MET – 8371 MW

DAILY CONSUMPTION MAX – 166 MU

DAILY CONSUMPTION AVG – 135 MU

CONSUMER PROFILE –

INDS -39%, DOM-25%, COMM-7%, IRRI-24% & OTHERS-5%

8

ANDHRA PRADESH

POPULATION :- 7.6 CRORES

AREA :- 275 (‘000 SQ KM)

NO OF CONSUMERS :- 162 LAKHS

PER CAPITA CONS. :- 719 UNITS

MAIN AGRICULTURE CROP :- RICE

CLIMATIC CONDITION :- HOT AND HOT & HUMID

SR STATES – GEOGRAPHYKARNATAKA

POPULATION :- 5.3 CRORES

AREA :- 192 (‘000 SQ KM)

NO OF CONSUMERS :- 105 LAKHS

PER CAPITA CONS. :- 642 UNITS

MAIN AGRICULTURE CROP :- COFFEE & RAGI

CLIMATIC CONDITION :- HOT AND HOT & HUMID

KERALA

POPULATION :- 3.2 CRORES

AREA :- 39 (‘000 SQ KM)

NO OF CONSUMERS :- 61 LAKHS

PER CAPITA CONS. :- 386 UNITS

MAIN AGRICULTURE CROP :- COCONUT & SPICES

CLIMATIC CONDITION :- HUMID

TAMIL NADU

POPULATION :- 6.2 CRORES

AREA :- 130 (‘000 SQ KM)

NO OF CONSUMERS :- 152 LAKHS

PER CAPITA CONS. :- 866 UNITS

MAIN AGRICULTURE CROP :- SUGAR CANE & OIL SEEDS

CLIMATIC CONDITION :- HOT AND HOT & HUMID

9

INSTALLED CAPACITY IN SRSUMMARY OF INSTALLED CAPACITY(MW)

         AS ON 31.07.2006

AGENCY HYDRO THERMAL GAS/DIESEL WIND/OTHERS NUCLEAR TOTAL

ANDHRA PRADESH 3587 2963 272 2 --- 6824

KARNATAKA 3389 1470 128 4 --- 4991

KERALA 1835 --- 235 2 --- 2072

TAMILNADU 2137 2970 423 19 --- 5549

PONDICHERRY --- --- 32 --- --- 32

CENTRAL SECTOR --- 8090 360 --- 880 9330

IPP 278 387 3149 4309 --- 8123

TOTAL

11226 (30%)

15880 (43%)

4599 (13%)

4336 (12%)

880 (2%)

36921 (100%)

10

GROWTH OF INSTALLED CAPACITY OF SR

1947

5

1983

0

2030

4

2129

8

2213

3

2298

3

2417

3

2616

3 2850

1

2952

6 3273

3 3603

1

10000

15000

20000

25000

30000

35000

40000

1994-95 1995-96 1996-97 1997-98 1998-99 1999-00 2000-01 2001-02 2002-03 2003-04 2004-05 2005-06

YEARS - - ->

IN MW

11

11226(30%)

15880(43%)

4337(12%)

880(2%)

4599(13%)

SOURCE-WISE INSTALLED CAPACITY OF SR

All Figures In MW

TOTAL 36,921 MW

HYDRO

THERMAL

WIND/OTHERS

NUCLEAR

GAS

GENERATING UNITS IN SOUTHERN REGION

A.PKAR

TNKERGENERATORS ABOVE 1000 MW

GENERATORS 500 – 1000 MW

GENERATORS BELOW 500 MW

TYPICAL

GENERATOR

SPREAD

IN SR

UNIT CAPACITY AP KAR KER TN CGS TOTAL

THERMAL (500 MW) 2 8 10

THERMAL

(200-250 MW)10 7 13 15 45

GAS/THERMAL

(100-150 MW)9 2 3 10 24

HYDRO

(>50 MW)27 29 16 15 87

TOTAL 48 38 19 38 165

- HYDRO

- THERMAL

- GAS / NAPTHA

- NUCLEAR

CPP/IPP PLANTS IN SOUTHERN REGION

A.P

KAR

TNKER

Station Name I/C in MW

Variable Cost (Ps)

TATA ELECTRIC 79.1 390

JINDAL 260 280

THANNEERBAVI 220 500

Station Name I/C in MW

Variable Cost (Ps)

KASARGOD PCL 22 470

BSES 157 560

KUTHUNGAL 21 ---

MANIYAR 12 ---

KAYAMKULAM 360 580

Station Name I/C in MW

Variable Cost (Ps)

HITEC 15

TCPL 63.5

GMR VASAVI 196 444

SAMALPATTY 105 474

ST-CMS 250 161

P P NALLUR 330.5 550

ABAN 113 88

MADURAI POWER 106 456

ARKAY 38

Station Name I/C MW

Variable Cost (Ps)

SIMHADRI 1000 104

BSES 220 168

VEMAGIRI PGL 233

SPECTRUM 208 104

JEGURUPADU EXT.

220

JEGURUPADU 216 102

LANCO 355 125

14

LOAD 500-1500 MW

LOAD 200-500 MW

TYPICAL

LOAD

SPREAD

IN SR

KHAMMAM

VIJAYAWADANAGARJUNASAGAR

GAZUWAKA

HYDERABAD

RAICHUR

GOOTY

HOODY

SALEM

UDUMALPET

TRICHUR

MADURAI

TRICHY

MADRAS

NEYVELI

CUDDAPAH

DAVANAGERE

RAMAGUNDAM

BANGALORE

MUNIRABAD

PP

P

P

P

P

P

P

P

P

P

PP

P

KOLAR

63

HOSUR

1

60

P

NELLORE

NELAMANGALA

KURNOOL

KALPAKKA

SIMHADRI

HIRIYUR

TALAGUPPA

MAMIDIPALLY

SRI SAILAM

-- OF NTPC

-- OF ANDHRA PRADESH

-- OF TAMIL NADU

-- OF NLC

-- OF POWERGRID

400KV SUB-STATIONS IN SR

NEYVELI TPS I (EXP)

  POWERGRID STATE OTHERS TOTAL

AP 8 9 2 19

KAR 6 5 1 12

KER 2     2

TN 6  1 2 9

TOTAL 22 15 5 42

TRIVENDRUM

NARENDRA

VEMAGIRIGMR

JEGRUPADU EXTN

MEHA BOOB NAGAR

CHITTOOR

-- OF NPC

KAIGA

MYSORE

-- OF KARNATAKA

ALMATHI

16

TRANSMISSION IN SOUTHERN INDIA

ABOUT 3000 CKM OF 400 KV LINES ADDED IN THE PAST 2 YEARS

VOLTAGE LEVEL AP KAR KER TN CGS TOTAL

400 KV 2680 1616     10905 15201

220/230 KV 10274 7839 2692 6538 366 27709

132/110 KV 12360 6060 3720 10220   32360

TOTAL 25314 15515 6412 16758 11271 75270

17

11000

13000

15000

17000

19000

21000

23000

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24

HOUR ---->

DE

MA

ND

IN

MW

--->

TYPICAL LOAD CURVE OF SR

WINTER

MONSOON

SUMMER

EVENING PEAK

WEATHERCONSUMPTION

18

DEEP VALLEY

DEEP VALLEY

SHARP

PEAK

19

MONSOONS

SOUTH WEST MONSOON NORTH EAST

MONSOON

20

KADAMPARAI PUMP OPERATION

-300

-200

-100

0

100

200

300

400

5000:

001:

002:

003:

004:

005:

006:

007:

008:

009:

0010

:00

11:0

012

:00

13:0

014

:00

15:0

016

:00

17:0

018

:00

19:0

020

:00

21:0

022

:00

23:0

00:

00

TIME ---->

IN M

W --

-->

48.50

49.00

49.50

50.00

50.50

51.00

FREQ

UENC

Y IN

HZ

---->

GENERATOR MODE

PUMP PUMP

SAVINGS OF RS 40 LAKHS EVERY DAY

INVESTMENT OF 1600 CRORES SAVED

21

OPPORTUNISTIC UI TRADEEXPORT TO WR ON 13/05/03-14/05/03

-300

-200

-100

0

100

200

300

400

500

600

00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 00 01 02 03 04 05 06 07 08

49

49.2

49.4

49.6

49.8

50

50.2

50.4

50.6

50.8

51POWER EXPORT TO WR ON

UI BASIS DURING LOAD CRASH

FREQ

22

SCHEDULE VS ACTUAL INJECTION GRAPH OF ER (AT ER PERIPHERY) FOR DATE : 31.08.03

0

100

200

300

400

500

600

700

800

900

0 4 8 12 16 20 24 28 32 36 40 44 48 52 56 60 64 68 72 76 80 84 88 92

TIME AS BLOCK OF 15 MINUTE --->

MW

-->

49.0

49.5

50.0

50.5

51.0

51.5

52.0

52.5

53.0

53.5

54.0

54.5

55.0

FREQ

UEN

CY

(Hz)

-->

SCHEDULE ACTUAL INJECTION ENTITLEMENT

SR FREQ ER FREQ

Entitlement

Schedule

Actual Injection

OPERATION ON 31/08/03 (Ganesh Chathurthi)

AMOUNT SAVED FOR SR CONSTITUENTS = 107 LAKHS

50 NOS HVDC SETPOINT CHANGES DONE TO ACHIEVE THIS!!!!!

23

DETAILS OF INTER-REGIONAL UI IMPORTS BY SR FROM WR AND ER DURING 20 th - 26th J UNE 05

0.00

0.50

1.00

1.50

2.00

2.50

3.00

3.50

20-J

un

21-J

un

22-J

un

23-J

un

24-J

un

25-J

un

26-J

un

UI ENERGY IMPORTED BY SR FROM WR & ER

-2.00

0.00

2.00

4.00

6.00

8.00

10.00

12.00

14.0020

-Jun

21-J

un

22-J

un

23-J

un

24-J

un

25-J

un

26-J

un

DAYS -->

EN

ER

GY

IN M

Us

--->

WR UI ER UI

TOTAL UI IMPORT AMOUNT @ SR RATE

0

100

200

300

400

500

600

20-J

un

21-J

un

22-J

un

23-J

un

24-J

un

25-J

un

26-J

un

DAYS --->

IN L

AK

HS

--->

0

10

20

30

40

50

60

70

80

90

100

20-J

un

21-J

un

22-J

un

23-J

un

24-J

un

25-J

un

26-J

un

AVERAGE UI TRANSACTION RATES IN RESPECTIVE REGIONS

0.00

0.50

1.00

1.50

2.00

2.50

3.00

3.50

20-J

un

21-J

un

22-J

un

23-J

un

24-J

un

25-J

un

26-J

un

DAYS --->

Rs

PE

R U

NIT

--->

SR RATE WR/ER RATE

NET GAIN BY SR CONSTITUENTS DUE TO RATE DIFFERENTIAL

0

10

20

30

40

50

60

70

80

90

100

20-J

un

21-J

un

22-J

un

23-J

un

24-J

un

25-J

un

26-J

un

DAYS --->

IN L

AK

HS

--->

24

GENERATION vs FREQUENCY FOR

10

30

50

70

90

08

:21

09

:21

10

:21

11

:21

TIME IN HH:MM ----->

MW

---

-->

49.00

49.20

49.40

49.60

49.80

50.00

50.20

50.40

FR

EQ

IN

HZ

---

-->

FREE GOVERNOR MODE OF OPERATION ON 12-DEC-04

SHARAVATHI -1

FREQ DROP FROM 49.72 HZ TO 49.27 HZ

i.e. ~ 0.45HZ

25

GENERATION vs FREQUENCY FOR

10

30

50

70

90

08

:21

09

:21

10

:21

11

:21

TIME IN HH:MM ----->

MW

---

-->

49.00

49.20

49.40

49.60

49.80

50.00

50.20

50.40

FR

EQ

IN

HZ

---

-->

FREE GOVERNOR MODE OF OPERATION ON 12-DEC-04

SHARAVATHI -4

FREQ DROP FROM 49.72 HZ TO 49.27 HZ

i.e. ~ 0.45HZ

26

0

100

200

300

400

500

600

700

800

900

1000

0 2 4 6 8 10 12 14 16 18 20 22 0

HOURS ---->

GE

NE

RA

TIO

N IN

MW

---

>

48.80

49.00

49.20

49.40

49.60

49.80

50.00

50.20

50.40

FR

EQ

IN H

Z--

->

SHARAVATHI GENERATION – TYPICAL DAY

FREQ

MW

27

OPTIMAL RESERVOIR UTILISATIONSHARAVATHY IN KARNATAKA

THE COST OF GENERATION AT SHARAVATHY IS LESS THAN 20 Ps /UNIT

AVERAGE SELLING UI RATE OF KARNATAKA IS 372 Ps/UNIT

PLANT OPERATORS AT SHARAVATHY THINK OF THE RESERVOIR LEVEL IN RUPEES

RATHER THAN IN FEET!!!

Rs. Rs.

Rs.

Rs.

Rs.

Rs.Rs.

Rs.

Rs.

Rs.

Rs.

Rs.

Rs.

Rs.

Rs.Rs.

28

VOLTAGE PROFILE IN SR GRID TYPICAL DAY IN OCTOBER 2004

360

370

380

390

400

410

420

430

440

RA

MA

GU

ND

AM

HY

DE

RA

BA

D

GA

ZU

WA

KA

NU

NN

A

N'S

AG

AR

KU

RN

OO

L

GO

OT

Y

NE

LLO

RE

CU

DD

AP

AH

BA

NG

ALO

RE

CH

EN

NA

I

NE

YV

ELI

VO

LT

AG

E L

EV

EL

02:00HRS

19:00HRS

29

01-01-03 TO 20-08-06

INTER REGIONAL EXCHANGES

274

234

152170

0

50

100

150

200

250

300

350

SR RATE WR RATE SR RATE ER RATE

RA

TE

(P

AIS

A/K

WH

) -

>

IMPORT BY SR FROM WR (804 MU)

IMPORT BY SR FROM ER (903 MU)

30

01-01-03 TO 20-08-06

INTER REGIONAL EXCHANGES

141 134

272260

0

50

100

150

200

250

300

SR RATE WR RATE SR RATE ER RATE

RA

TE

(P

AIS

A/K

WH

) -

>

EXPORT BY SR TO WR (710 MU)EXPORT BY SR TO ER (362 MU)

31

IR EXCHANGES OF SR IN THE FORM OF UI TILL 20.08.2006 (190 WEEK)

TRANSACTION WITH WR

TRANSACTION WITH ER

Energy Imported

804 MU (IMPORT BY SR)

903 MU(IMPORT BY SR)

Net Saving to each SR and WR/ER Constituents

due to differential tariff

Rs. 53.50 Cr. Rs. 45.50 Cr.

Energy Exported 710 MU (EXPORT BY SR)

362 MU(EXPORT BY SR)

Net Saving to each SR and WR/ER Constituents

due to differential tariff

Rs. 42.54 Cr. Rs. 16.13 Cr.

32

AP KAR KER TN PONDY

Total UI exported(-) /

Imported(+) in MUs

-4228 5053 389 2001 -272

Total amount paid in Crores

Rs.-734 932 -16 534 -54

Average rate of UI in paise/unit 174 184 40 267 197

SUMMARY OF UI – 190 WKS(FROM 01/JAN/03 TO 20/AUGUST/06)

33

UI IN SR (FROM 01/01/03 TO 20/08/06)

• TOTAL UI TURNOVER :- 11632 MU

• TOTAL UI AMOUNT DISBURSED:- 2370 CR

• AVG WEEKLY TRANSACTION:- 61 MU

• AVG WEEKLY UI AMOUNT DISBURSED:- 13 CR

34

UI EXCHANGES AND AVG. RATES IN RESPECT OF DIFFERENT CONSTITUENTS IN SR

333

186 178

240

-199

-260 -267

-160

-400

-300

-200

-100

0

100

200

300

400

RA

TE

(PA

ISE

/UN

IT)

OVER DRAWAL (PURCHASE) UNDER DRAWAL (SOLD)

5164MU

1337MU

2659MU

5046MU

111MU

949MU

658MU

AP KAR KER TN

817MU

Back