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SOUTHERN REGIONAL LOAD DESPATCH CENTRE

PRESENTATION ON ROLE OF REGULATORS IN SELLING EXCESS POWER FROM CPPs 31ST May, 2005. by V.K AGRAWAL AGM, SRLDC. POWER GRID CORPORATION OF INDIA LIMITED. SOUTHERN REGIONAL LOAD DESPATCH CENTRE. PRESENTATION OVERVIEW. SR GRID AND IPP’ ROLE - QUICK FACTS

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SOUTHERN REGIONAL LOAD DESPATCH CENTRE

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  1. PRESENTATION ON ROLE OF REGULATORS IN SELLING EXCESS POWER FROM CPPs 31ST May, 2005 by V.K AGRAWAL AGM, SRLDC POWER GRID CORPORATION OF INDIA LIMITED SOUTHERN REGIONAL LOAD DESPATCH CENTRE

  2. PRESENTATION OVERVIEW • SR GRID AND IPP’ ROLE - QUICK FACTS • OPEN ACCESS REGULATIONS – RECENT CHANGES • IMPACT OF CHANGES – CASE STUDIES • SHORT TERM OPEN ACCESS – EXPERIENCES • REGULATORS DELIGHT – MORE BUT LESS • STATE SECTOR – CHALLENGES & TASKS AHEAD

  3. THANK YOU

  4. SOUTHERN REGIONAL GRIDQUICK FACTS

  5. REGIONAL GRIDS INSTALLED CAPACITY NORTHERN :- 31,230 MW EASTERN :- 17,697 MW SOUTHERN :- 32,734 MW WESTERN :- 32,354 MW NORTH-EASTERN :- 2,357 MW TOTAL 116,372 MW NORTHERN REGION NORTH-EASTERN REGION EASTERN REGION WESTERNREGION SOUTHERN REGION

  6. ANDHRA PRADESH KARNATAKA TAMIL NADU KERALA SOUTHERN REGION – GEOGRAPHY POPULATION :- 22.5 CRORES ( 22% OF INDIA) AREA :- 651 (‘000 SQ KM)(19% OF INDIA) INSTALLED CAPACITY:- 32,734 MW(28.1%) PER CAPITA CONSUM. – 700 unit (A. I. – 567) WEATHER :- South-west monsoon North-east monsoon SEA COAST :- AROUND 4000 KM

  7. INSTALLED CAPACITY IN SR The above capacity does not includes --- About 1342 MW of Wind Mill Capacity in Tamil Nadu. --- Micro and Captive plants in different states.

  8. SOURCE-WISE INSTALLED CAPACITY OF SR IN MW NUCLEAR WIND/OTHERS HYDRO GAS THERMAL 32,734 MW

  9. GENERATING UNITS IN SOUTHERN REGION A.P TYPICAL GENERATOR SPREAD IN SR KAR - HYDRO - THERMAL KER TN GENERATING STATIONS ABOVE 1000 MW - GAS / NAPTHA GENERATING STATIONS 500 – 1000 MW - NUCLEAR GENERATING STATIONS BELOW 500 MW

  10. TALCHER GRID MAP BHADRAVATI TYPICAL FLOWS ARE FROM NORTH TO SOUTH JEYPORE 178x2 SIMHADRI NTPC 2x221 8x4 RSTPP 400 KV LINE PRESENTLY OPERATED AT 220 KV GAZUWAKA(AP) 1 301x2 189 15x2 P 187 195 VISAKHAPATNAM (POWERGRID) 267x2 KHAMMAM HYDERABAD 317 P P 115 197x2 P MMDP 155 P VIJAYAWADA 146x2 221x2 258 RAICHUR NAGARJUNASAGAR P Nagjhari 279 172 ABOUT 12000 CKM 400KV TRANSMISSION 308 GRID FOCAL POINT SHIFTED TO KOLAR AFTER COMMISSIONING OF HVDC SSLMM MUNIRABAD P KODASAALY 277 52x2 KURNOOL KAIGA SIRSI 120 P N GOOTY CUDDAPAH 60 P DAVANAGERE 300 NELLORE 173 302 KADRA HIRIYUR 330 242 28 NELAMANGALA ALMATHI BANGALORE P MADRAS P KOLAR HOODY TALGUPPA HOSUR MAPS 182 181 63 175 PONDICHERY SALEM 54 P NEYVELI 179 151 164x2 UDUMALPET TRICHY QUANTUM CHANGES IN FLOW PATTERN LIKELY AFTER COMMISSIONING OF KOODANKULAM 2000 MW P 130x2 TRICHUR P P 127 130x2 P MADURAI PALLOM EDAMON THIRNELVALI KAYANKULAM 2x78 KOODANKULAM THIRUVANATHAPURAM

  11. TYPICAL LOAD CURVE OF SR EVENING PEAK SUMMER WINTER MONSOON WEATHER RESERVOIR CONSUMPTION

  12. SHARP PEAK DEEP VALLEY DEEP VALLEY

  13. GRID OPERATIONTYPICAL ISSUES IN THE PAST

  14. GRID OPERATION – TYPICAL ISSUES IN PAST • LOW / HIGH FREQUENCY PROBLEMS • FREQUENCY EXCURSES TO LOW/HIGH VALUES • LOW / HIGH VOLTAGE OPERATION • CRITICALLY LOW VOLTAGES AT LOAD CENTRES • SUBSTANTIALLY HIGH VOLTAGES AT FAR ENDS • SYSTEM BROWNOUTS / BLACK OUTS • SEPERATION OF SYSTEMS / LOSS OF LOAD • ECONOMIC IN-STABILITY / INCREASED ELECTRICAL LOSSES • UNRELIABLE / INEFFICIENT OPERATION OF EQUIPMENT ...THE END RESULT :

  15. GRID PRESENT STATUS

  16. FREQUENCY DURATION CURVE 2002-03, 2003-04 & 2004-05 2004-05 2002-03 2003-04

  17. COMPARISION OF BANGALORE VOLTAGE-TYPICAL DAY 2003 Jan 03 2004 BETTER VOLTAGE PROFILE MEANS LESS ELECTRICAL LOSSES REALITY BITE: FARMERS IN KARNATAKA ARE HAPPY WITH FEWER HOURS OF QUALITY POWER!!. EFFICIENCY OF PUMPS AT TG HALLI WATER WORKS IMPROVED! 2002 Jan 02

  18. SOUTHERN REGION LOSS* • *Source : Report of System Studies conducted for Accessing Shunt Compensation requirement in Southern Region – March 2004 and March 2005 - SREB ,CEA • ** Projected figures • 0.5% REDUCTION MEANS 100 CR ANNUAL SAVINGS

  19. GRID PRESENT STATUSCARDINAL EVENTS

  20. GRID PRESENT STATUS -- CARDINAL EVENTS • AVAILABILITY BASED TARIFF • UNIFIED LOAD DESPATCH SCHEME • GENERATION ADDITION • INTERREGIONAL AC / HVDC LINKS • OPERATIONAL EXCELLANCE ...THESE EVENTS CHANGED THE FACE OF GRID OPERATION

  21. SUMMARY OF UI – 124 WKS(FROM 01/JAN/03 TO 15/MAY/05)

  22. UI IN SR (FROM 01/01/03 TO 15/05/05) • TOTAL UI TURNOVER :- 7792 MU • TOTAL UI AMOUNT DISBURSED:- 1600 CR • AVG WEEKLY TRANSACTION:- 63 MU • AVG WEEKLY UI AMOUNT DISBURSED:- 13 CR

  23. GRID OPERATION: A TIGHT ROPE WALK POWER SWINGS INSTABILITY INCREASED LOSSES BLACK-OUT IN-ECONOMIC OPERATION VOLTAGE COLLAPSE

  24. UI TRANSACTION ON 31/08/03 HIGHLIGHTS OF UI TRANSACTION ON 31.08.03 (SUNDAY, GANESH CHATURTHI) • UI imported from ER : 6.07 MU • UI imported from WR : 2.81 MU • Total UI imported from C. Grid by SR : 8.88 MU • Average UI rate of C.Grid : 93 Ps/Unit • Average UI rate in SR for C.Grid : 213 Ps/Unit • Max. Power transfer in UI from ER : 510 MW • Max. Power transfer in UI from WR : 350 MW • Total Max. Power transfer in UI from C.Grid : 860 MW • Amount saved for the SR constituents : 107 Lacs • Total Number of HVDC Operations : 50 no.s

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