POWER GRID CORPORATION OF INDIA LTD

POWER GRID CORPORATION OF INDIA LTD

SOUTHERN REGIONAL LOAD DESPATCH CENTRE

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SOUTHERN REGION GRID HIGHLIGHTS

ANDHRA PRADESH GRID HIGHLIGHTS

KARNATAKAGRID HIGHLIGHTS

KERALA GRID HIGHLIGHTS

TAMIL NADU GRID HIGHLIGHTS

ANDHRA PRADESH INSTALLED CAPACITY

KARNATAKAINSTALLED CAPACITY

KERALA INSTALLED CAPACITY

TAMIL NADUINSTALLED CAPACITY

FREQUENCY PIE-CHARTLAST FOUR YEARS

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SOUTHERN REGION INSTALLED CAPACITY

FREQUENCY PIE-CHARTAPRIL 2002

INTER REGIONAL EXCHANGES

IMPORT THROUGH HVDC

SIGNIFICANTMILESTONES

PROBLEMS

SOLUTIONS

INSTALLATION OF SHUNT CAPACITOR

EXPECTED TRANSMISSION

EXPECTED GENERATION

LINKS - 2

BANGALORE VOLTAGE VS MVAR

KARNATAKA - ISSUESGRID DISTURBANCES

DURING 2002

ALLOCATION OFSHARES

GRID MAPS3D DEMAND CURVE

APRIL 2002

3D FREQUENCY CURVEAPRIL 2002

SRLDCMAN POWER

CERC PETITIONS SRLDC EXPENDITURE

VOLTAGE PROFILE

SOUTHERN REGION GRID HIGHLIGHTS 1997-98 1998-99 1999-00 2000-01 2001-02

Installed Capacity(MW) 21297 22133 22983 24173 26163

Average Daily Consumption (MU)

293 309 337 349 358

Average Frequency (HZ) 48.2 48.36 48.7 48.67 48.52

Average FVI 36 31 22 23 28

Inter Regional Assistance through HVDC (MU)

403 1571 2264 3040 4454

Generation Addition (MW) 638 836 850 1190 1990

Peak Demand Met (MW) 15682 17180 18535 19428 20063

Peak Demand Requirement (MW)

18018 18840 20014 23172 24110

% Demand Deficit 13 9 7 16 17

Total Energy Consumed (MU) 106897 111356 123073 127524 130822

Energy Requirement (MU) 115099 121869 128141 142340 146473

% Energy Deficit 7 9 4 10 11

ANDHRA PRADESH GRID HIGHLIGHTS

2000-01 2001-02

Installed Capacity (MW) 6846 7860

Peak Demand Met(MW) 7143 7029

Peak Demand Requirement(MW)

8108 8391

% Demand Deficit 12% 16%

Total Energy Consumed(MU)

46533 46410

Energy Requirement(MU) 51865 52009

% Energy Deficit 10% 11%

Average Daily Consumption127 127

KARNATAKA GRID HIGHLIGHTS

2000-01 2001-02

Installed Capacity(MW) 4302 4813



5027 5814



27447 28596




KERALA GRID HIGHLIGHTS

2000-01 2001-02




2539 2571



12500 12640




TAMIL NADU GRID HIGHLIGHTS

2000-01 2001-02




6839 7758



41044 43180




IMPORT THROUGH HVDC

1997-98 1998-99 1999-00 2000-01 2001-02

S1

403

15712264

4454

3040

0

500

1000

1500

2000

2500

3000

3500

4000

4500

5000

YEARS ---->

IN MUS

INTER-REGIONAL EXCHANGES:

2000-01 2001-02

FROM ER 2513 3666

FROM WR 527 788

FROM MSEB 108 0

FROM GRIDCO (Orissa) 750 634

FROM CSEB 0 16

TOTAL 3898 5104

IN MUs

INSTALLED CAPACITY OF SOUTHERN REGION AS ON 31.03.2002

IN MW

26163MW12206 (46%)

9912 (38%)780 (3%)2487 (10%)

25 (0.1%)

753 (3%)

HYDRO THERMAL GAS WIND IPP NUCLEAR

STATE/CGS HYDRO THERMAL GAS WIND IPP NUCLEAR TOTAL

ANDHRA PRADESH 3042 3443 273 2 1100 7860

KARNATAKA 3082 1388 2 341 4813

KERALA 1795 235 350 2 171 2553

TAMIL NADU 1993 3570 130 19 875 6587

NTPC 2100 2100

NLC TS II 1470 1470

MAPS 340 340

KAIGA 440 440

TOTAL 9912 12206 753 25 2487 780 26163

IN % 38% 47% 3% 0.10% 9% 3%

INSTALLED CAPACITY OF SR IN MWINSTALLED CAPACITY OF SR IN MWAS ON 31st March 02

INSTALLED CAPACITY OF ANDHRA PRADESH AS ON 31.03.2002

IN MW

7860MW3443 (44%)

3042 (39%)1100 (14%)

2 (0.03%)

273 (3%)

HYDRO THERMAL GAS WIND IPP

INSTALLED CAPACITY OF ANDHRA PRADESH:

IN MW IN PERCENTAGE

HYDRO 3042 39%

THERMAL 3443 44%

GAS 273 3%

WIND 2 0.03%

IPP 1100 14%

TOTAL 7860

AS ON 31st March 02

INSTALLED CAPACITY OF KARNATAKA AS ON 31.03.2002

IN MW

4813MW

1388 (29%)

3082 (64%)

341 (7%)2 (0.04%)

HYDRO THERMAL WIND IPP

INSTALLED CAPACITY OF KARNATAKA:

IN MW IN PERCENTAGE

HYDRO 3082 64%

THERMAL 1388 29%

WIND 2 0.04%

IPP 341 7%

TOTAL 4813

AS ON 31st March 02

INSTALLED CAPACITY OF KERALA AS ON 31.03.2002

IN MW

2553MW

235 (9%)1795 (70%)

171 (7%)2 (0.1%)

350 (14%)


INSTALLED CAPACITY OF KERALA:

IN MW IN PERCENTAGE

HYDRO 1795 70%

THERMAL 235 9%

GAS 350 14%

WIND 2 0.08%

IPP 171 7%

TOTAL 2553

AS ON 31st March 02

INSTALLED CAPACITY OF TAMIL NADU AS ON 31.03.2002

IN MW

6587MW3570 (54%)

1993 (30%)875 (13%)

19 (0.3%)

130 (2%)


INSTALLED CAPACITY OF TAMIL NADU:

IN MW IN PERCENTAGE

HYDRO 1993 30%

THERMAL 3570 55%

GAS 130 2%

WIND 19 0.29%

IPP 875 13%

TOTAL 6587

AS ON 31st March 02

S.No APTRANSCO KPTCL KSEB TNEBTOTAL

REGION

1 Installed as on 31.03.2002 5573 2841 514 2930 11858

2Programme of SEB's for

2001-2002 *427 625 550 888 2490

3Capacitors installed during

2001-200264 362 40 482.4 948.4

4 Backlog for 2001-2002 363 263 510 405.6 1541.6

5Total Cummulative

Installed as on 31.03.20025637 3203 554 3412.4 12806.4

6Capacitor installed during

April 200210 0 0 24 34

PROGRESS OF SHUNT CAPACITORS

* As furnished in 127th SREB meeting held on 6th June 2001.

EXPECTED GENERATION EXPECTED GENERATION ADDITIONSADDITIONS

STATE 02-03 03-04 04-05 05-06 06-07

ANDHRA PRADESH 2642 2288 2020 500 0

KARNATAKA 210 0 500 0 0

KERALA 262 294 549 310 0

TAMIL NADU 635 30 1050 0 2920

CENTRAL SECTOR 420 0 0 500 0

TOTAL (IN MW) 4169 2611 4118 1310 2920

EXCEL FILE

EXPECTED TRANSMISSION LINESEXPECTED TRANSMISSION LINES

STATE/CENTRAL SECTOR LEVEL 2002-03 2003-04

ANDHRA PRADESH400 KV 742 400

220 KV 472

KARNATAKA400 KV 265 482

220 KV 380

TAMILNADU400 KV 190

220 KV 604

POWERGRID500 KV400 KV

14371766 346

TOTAL500 KV400 KV

14372963 1228

220 KV 1456

IN CKT KMS

EXCEL FILE

Frequency Profile: Last 4 yearsFrequency Profile: Last 4 years

2001-0249.5-50.5 HZ

13%49-49.5 HZ7%

48.5-49 HZ11%

48-48.5 HZ

41%

<48.0HZ

23%

>50.5HZ5%

2000-01>50.5

HZ2%

<48.0HZ

12%

48-48.5 HZ

45%

48.5-49 HZ19%

49-49.5 HZ

11%

49.5-50.5 HZ

11%

1999-00>50.5

HZ4%

<48.0HZ

11%

48-48.5 HZ

45%

48.5-49 HZ18%

49-49.5 HZ9%

49.5-50.5 HZ

13%

1998-99>50.5

HZ2%

<48.0HZ

28%

48-48.5 HZ

48%

48.5-49 HZ10%

49-49.5 HZ5%

49.5-50.5 HZ7%

PIE CHART FOR FREQUENCY SPECTRUM FOR APRIL 2002

48 & < 48.513.23%

50.5 & More0.06%

49.5 & < 50.50.18%

49.0 & < 49.50.33%48.5 & < 49

0.98%

< 4885.22%

FREQUENCY SPECTRUM FOR APRIL 2002

SIGNIFICANT MILESTONESSIGNIFICANT MILESTONES1.1. 1000MW IMPORT FROM WR ON 16/07/2001. HVDC CAPACITY FULLY 1000MW IMPORT FROM WR ON 16/07/2001. HVDC CAPACITY FULLY

UTILIZED.UTILIZED.

2.2. 500MW BEING AVAILED FROM ER FROM MARCH 2002. HVDC 500MW BEING AVAILED FROM ER FROM MARCH 2002. HVDC CAPACITY FULLY UTILIZED. CAPACITY FULLY UTILIZED.

3.3. IMPORT FROM NEIGHBOURING REGIONS - 5105MU DURING 2001-02 - IMPORT FROM NEIGHBOURING REGIONS - 5105MU DURING 2001-02 - COMPARED TO 3898MU DURING 2000-01 (ie. A RISE OF 31%).COMPARED TO 3898MU DURING 2000-01 (ie. A RISE OF 31%).

4.4. AC BYPASS ARRANGMENT AT HVDC STATION, BHADRAVATI UTILISED AC BYPASS ARRANGMENT AT HVDC STATION, BHADRAVATI UTILISED FOR FAST RESTORATION DURING DISTURBANCE.FOR FAST RESTORATION DURING DISTURBANCE.

5.5. PEAK DEMAND MET 20063 MW DURING MARCH 2002 - COMPARED TO PEAK DEMAND MET 20063 MW DURING MARCH 2002 - COMPARED TO 19428 MW IN MARCH 2001.(ie. A RISE OF 3%).THE TOTAL 19428 MW IN MARCH 2001.(ie. A RISE OF 3%).THE TOTAL CONSUMPTION DURING 2001-02 - 130821 MU - COMPARED TO CONSUMPTION DURING 2001-02 - 130821 MU - COMPARED TO 127524 MU DURING 2000-01(ie A RISE OF 3%).127524 MU DURING 2000-01(ie A RISE OF 3%).

6.6. DORMANT INTER STATE LINES BETWEEN ANDHRA PRADESH AND DORMANT INTER STATE LINES BETWEEN ANDHRA PRADESH AND KARNATAKA i.e. 220KV GOOTY-BELLARY & SADEM-TANDUR MADE KARNATAKA i.e. 220KV GOOTY-BELLARY & SADEM-TANDUR MADE USE FROM 1USE FROM 1stst & 2 & 2ndnd MAY 2002 RESPECTIVELY MAY 2002 RESPECTIVELY..

7.7. ULDC CONTROL ROOM AT SRLDC FULLY FUNCTIONAL FROM 1st ULDC CONTROL ROOM AT SRLDC FULLY FUNCTIONAL FROM 1st MARCH 2002.MARCH 2002.

8.8. SLDC’s OF KARNATAKA, KERALA & TAMIL NADU EXTENSIVELY USING SLDC’s OF KARNATAKA, KERALA & TAMIL NADU EXTENSIVELY USING ULDC SCHEME. TRIAL OPERATION IN PROGRESS IN ANDHRA ULDC SCHEME. TRIAL OPERATION IN PROGRESS IN ANDHRA PRADESH.PRADESH.

PROBLEMSPROBLEMS LOW GRID FREQUENCYLOW GRID FREQUENCY LOW VOLTAGESLOW VOLTAGES HEAVY MVAR DRAWALSHEAVY MVAR DRAWALS CAPACITOR INSTALLATION-BACKLOGCAPACITOR INSTALLATION-BACKLOG MEAGRE RELIEF FROM AUFR’SMEAGRE RELIEF FROM AUFR’S RELUCTANCE - MANUAL LOAD RELUCTANCE - MANUAL LOAD

SHEDDINGSHEDDING TRANSMISSION CONSTRAINTSTRANSMISSION CONSTRAINTS PROTECTION CO-ORDINATIONPROTECTION CO-ORDINATION GRID GRID

DEFENCELESS DEFENCELESS VULNERABLEVULNERABLE

SOLUTIONSOLUTION

MAINTAIN FREQ BETWEEN 49-50.5 HZMAINTAIN FREQ BETWEEN 49-50.5 HZ ACCELERATE SHUNT CAPACITOR ACCELERATE SHUNT CAPACITOR

INSTALLATIONINSTALLATION REINSTATE 2 STAGE UFR’SREINSTATE 2 STAGE UFR’S PROTECTION CO-ORDINATIONPROTECTION CO-ORDINATION AUGMENTATION OF TRANSMISSIONAUGMENTATION OF TRANSMISSION SCIENTIFIC SETTLEMENT SYSTEM-ABTSCIENTIFIC SETTLEMENT SYSTEM-ABT FREE GOVERNOR MODEFREE GOVERNOR MODE

SELF HEALING MECHANISMSELF HEALING MECHANISM CONJUNCTIONCONJUNCTION

KARNATAKA ISSUESKARNATAKA ISSUES11 400/220 KV 500MVA TRANSFORMER AT HOODY 400/220 KV 500MVA TRANSFORMER AT HOODY

CONTINUOUSLY OVER LOADED CONTINUOUSLY OVER LOADED - FREQUENT TRIPPING.- FREQUENT TRIPPING.- GRID DISTURBANCES/SEPARATIONS- GRID DISTURBANCES/SEPARATIONS

22 INADEQUATE SHUNT COMPENSATIONINADEQUATE SHUNT COMPENSATION- EXTREME LOW VOLTAGE (300KV) AT - EXTREME LOW VOLTAGE (300KV) AT

BANGALOREBANGALORE- FREQUENT POWER SWINGS- FREQUENT POWER SWINGS- RESTRICTION IN INTER REGIONAL - RESTRICTION IN INTER REGIONAL

ASSISTANCEASSISTANCE

33 NO REDUNDANCY IN 220KV NETWORK – LINES FULLY LOADED.NO REDUNDANCY IN 220KV NETWORK – LINES FULLY LOADED.

44 OBSOLETE PROTECTIVE RELAYS – FREQUENT MALOPERATION.OBSOLETE PROTECTIVE RELAYS – FREQUENT MALOPERATION.

55 MAJORITY EXISTING 220KV SUB-STATIONS WITHOUT BUS-BAR MAJORITY EXISTING 220KV SUB-STATIONS WITHOUT BUS-BAR PROTECTION.PROTECTION.

66 POOR MONSOON POOR MONSOON - DEPLETED HYDEL RESERVOIR.- DEPLETED HYDEL RESERVOIR.- PERPETUAL OVER DRAWAL AT LOW - PERPETUAL OVER DRAWAL AT LOW

FREQUENCY.FREQUENCY.

DISTURBANCES IN SOUTHERN REGION DURING 2002

No

Date of Event

Time when the event occurred

Description of the Event and area affected Remarks

1 23-Jan-02 12:49

VTS-BOMMUR feeder jumper got cut at VTS. Due to delay in tripping of the line LBB operated at VTS. Most

part of Andhra Pradesh & Karnataka system were effected.

Due to delay in tripping clearance of fault in VTS-BOMMUR feeder, LBB

operated at VTS. Further during restoration of loads after change

over at 12:00Hrs the voltages dipped and caused the power swing.

2 1-Mar-02 14:26Hoody transformer tripped on over load .South

Karnataka load was effected Hoody transformer tripped on over

load.

3 1-Mar-02 17:07Guttur transformer tripped on over load. Parts of south

Karnataka were effectedGuttur transformer tripped on over

load.



load.



load.

6 7-Mar-02 12:45Hoody transformer was Hand tripped on load due to isolator contact melting.South Karnataka load was

effected

Hoody transformer was Hand tripped on load due to isolator

contact melting.This caused a power swing and south Karnataka got

separated from rest of the system

7 19-Mar-02 10:35Hoody Transformer tripped on over load. Southern

Karnataka load was affected.

Tripping of Hoody Transformer caused power swing separating AP-

KARNATAKA from rest of the system.

8 22-Apr-02 16:45NEELAMANGALA-HOODY Tripped on fault.Total South

karnataka Load was effected.NEELAMANGALA-HOODY Tripped

on fault.

9 3-May-02 9:08HOODY AND GUTTUR transformers tripped on over

load . Parts of Karnataka(1050 MW) effected Hoody transformer tripped on over

load.

ALLOCATION OF SHARES

STATE NTPC PEAK

NTPC OFFPEA

K

NLY-II/I

NLY-II/II MAPS KAPS ERTOTAL PEAK

TOTAL OFFPEAK

Andhra Pradesh 698 711 106 192 32 18 160 1206 1218

Karnataka 439 428 153 206 26 132 156 1113 1102

Kerala 254 260 64 92 19 40 74 543 548

Tamil Nadu 536 528 184 276 259 237 100 1591 1584

PONDY 73 73 72 24 5 13 10 197 197

GOA 100 100

TOTAL 2100 2100 580 790 340 440 500 4750 4750

IN MW

PETITIONSPETITIONS

SRLDC FILED 10 PETITIONS AND 3 AFFIDAVITS WITH SRLDC FILED 10 PETITIONS AND 3 AFFIDAVITS WITH CERC ON MAINTENANCE OF GRID FREQUENCY.CERC ON MAINTENANCE OF GRID FREQUENCY.

KPTCL FILED WRIT PETITION IN THE HIGH COURT OF KPTCL FILED WRIT PETITION IN THE HIGH COURT OF KARNATAKA AGAINST CERC ORDER DATED 14-02-KARNATAKA AGAINST CERC ORDER DATED 14-02-2002.2002.

HIGH COURT OF KARNATAKA IN ITS INTERIM ORDER HIGH COURT OF KARNATAKA IN ITS INTERIM ORDER DATED 22-03-2002 STAYED CERC ODRER DATED 22-03-2002 STAYED CERC ODRER 14.02.2002.14.02.2002.

SRLDC FILED LATEST PETITION WITH CERC ON 03-SRLDC FILED LATEST PETITION WITH CERC ON 03-05-2002 ON MAINTENANCE OF GRID FREQUENCY.05-2002 ON MAINTENANCE OF GRID FREQUENCY.

O & M EXPENDITURE OF SRLDCO & M EXPENDITURE OF SRLDC

YEARSYEARS TOTAL TOTAL EXPENDITUREEXPENDITURE

1993-941993-94 24047362404736

1994-951994-95 1672605116726051

1995-961995-96 1957118019571180

1996-971996-97 2420510624205106

1997-981997-98 2849260428492604

1998-991998-99 3371177433711774

1999-001999-00 3689234536892345

2000-012000-01 4978407349784073

2001-022001-02 DETAILS

EXPENDITURE OF SRLDCEXPENDITURE OF SRLDCO&M EXPENDITURE OF SRLDC, BANGALORE (Amt. in Rs.)

A/ c.Code DETAILS 1993-94 1994-95 1995-96 1996-97 1997-98 1998-99 1999-00 2000-01

120199 WORKMAN COST 369973 1964688 2508387 2537207 3379428 3259618 4813385 9190041

120299 SUPERVISORS COST 115032 804099 957270 1281692 1096956 1052676 1458321 2830750

120399 EXECUTIVE COST 580214 3699440 4286551 7210391 8680016 11284438 14443595 15966305

120599 PF & OTHER FUNDS 83717 459873 543037 861302 890497 1705406 1648175 2541272

120699 EMPLOYEE WELFARE EXPS 112204 1172341 1425397 1962717 2157073 2850188 3165086 3917311

130199 R&M - BUILDINGS 17313 213099 122841 16636 66993 63035 75933 171067

130299 R&M -PLANT & MACHINERY 0 0 0 0 8108 0 0 0

130599 R&M -OTHERS 0 66826 170130 242584 431240 290510 315290 256069

130799 ELECTRIC ITY CHARGES 0 335053 297788 374158 618938 637079 526081 784879

130999 WATER CHARGES 5642 65018 80728 115374 126306 148622 284604 375033

140299 TRAINING COST 0 57282 12675 31997 59352 75605 109638 61363

140499 AUDIT & PROF. CHARGES 1700 8348 29370 5000 34251 89128 43295 31939

140599 COMMUNICATION EXPS 809844 4564917 5691903 5992460 6237675 7117298 4218331 4362830

140699 TRAVEL EXPS 86041 1076026 1947057 1901572 2125111 2228224 2493569 2617842

140899 STATUTORY AUDIT EXPS 0 7162 0 2555 1226 4793 0 20136

140901 PUBLIC ITY EXPS 3864 80955 21697 1645 0 6200 26682 0

141099 PRINTING & STATIONERY 76737 783681 336057 229007 264570 200341 199138 305796

141199 EDP CONSUMABLES 12418 163878 27481 51084 23406 110697 114511 79045

141399 ENTERTAINMENT EXPS 24063 192467 178599 149118 49317 18051 40700 8278

141202 TRANSIT HOSTEL EXPS 0 43860 0 0 0 0 0 0

141599 0 154436 0 0 0 0 226389 201158

141699 BOOKS & PERIODICALS 896 20566 8819 12575 12507 15937 23258 289974

141999 BROCKERAGE & COMMISSION 2166 12368 9342 2875 3090 12225 12675 6890

142499 VEHICLE HIRE, RUNN.& OTHER MISC EXPS 102912 762635 368245 388120 446525 513281 492382 583944

142599 INSURANCE 0 2909 440 6996 6552 6782 22999 21221

142899 RATES & TAXES 0 0 8196 7980 15838 7868 5775 0

150999 REBATE TO CUSTOMERS 0 0 0 0 0 0 141898 571512

151099 BANK CHARGES 0 427 0 10 35 115 141 350

163299 DEPRECIATION 0 13697 539170 820051 1757594 2013657 1990494 4589068

TOTAL EXPENDITURE 2404736 16726051 19571180 24205106 28492604 33711774 36892345 49784073

MAN POWER OF SRLDC

EXECUTIVESEXECUTIVES 3737

SUPERVISORSSUPERVISORS 66

WORKMENWORKMEN 3434

TOTALTOTAL 7777

POWER GRID CORPORATION OF INDIA LTD

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