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SOUTHERN REGIONAL LOAD DESPATCH CENTRE

WELCOME TO V MADHU, MD, KPTCL. POWER GRID CORPORATION OF INDIA LIMITED. SOUTHERN REGIONAL LOAD DESPATCH CENTRE. PRESENTATION OVERVIEW. SR GRID - QUICK FACTS KPTCL METERING LOCATIONS AVAILABILITY BASED TARIFF OPEN ACCESS REGULATIONS – RECENT CHANGES IMPACT OF CHANGES – CASE STUDIES

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SOUTHERN REGIONAL LOAD DESPATCH CENTRE

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  1. WELCOME TO V MADHU, MD, KPTCL POWER GRID CORPORATION OF INDIA LIMITED SOUTHERN REGIONAL LOAD DESPATCH CENTRE

  2. PRESENTATION OVERVIEW • SR GRID - QUICK FACTS • KPTCL METERING LOCATIONS • AVAILABILITY BASED TARIFF • OPEN ACCESS REGULATIONS – RECENT CHANGES • IMPACT OF CHANGES – CASE STUDIES • STATE SECTOR – CHALLENGES & TASKS AHEAD

  3. MORE LINKS • SCHEDULING PROCEEDURE • DRAFT IEGC JUNE 2005

  4. THANK YOU

  5. SOUTHERN REGIONAL GRIDQUICK FACTS

  6. REGIONAL GRIDS INSTALLED CAPACITY NORTHERN :- 31,230 MW EASTERN :- 17,697 MW SOUTHERN :- 32,704 MW WESTERN :- 32,354 MW NORTH-EASTERN :- 2,357 MW TOTAL 116,342 MW NORTHERN REGION NORTH-EASTERN REGION EASTERN REGION WESTERNREGION SOUTHERN REGION

  7. 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

  8. 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.

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

  10. TYPICAL LOAD SPREAD IN SR LOAD 500-1500 MW LOAD 200-500 MW

  11. 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

  12. TYPICAL LOAD CURVE OF SR EVENING PEAK SUMMER WINTER MONSOON

  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. FREQUENCY PROFILE 2002, 2003&2004

  18. FREQUENCY CURVE FOR 9th SEPTEMBER 2004 FVI = 0.04 Avg Freq = 49.99Hz 10 * ∑ (F – 50) 2 FVI = ------------------------------- 24 * 60

  19. 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

  20. Voltage at Bangalore Jan 02 & 03

  21. 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

  22. AVAILABILITY BASED TARIFFOPERATIONAL EXCELLANCE ...THESE EVENTS CHANGED THE FACE OF GRID OPERATION

  23. SHARP PEAK DEEP VALLEY DEEP VALLEY

  24. KADAMPARAI PUMP OPERATION SAVINGS OF RS 40 LAKHS EVERY DAY INVESTMENT OF 1600 CRORES SAVED GENERATOR MODE PUMP PUMP THE PUMP MODE WAS NOT UTILISED SINCE INCEPTION!!!

  25. OPPORTUNISTIC UI TRADE POWER EXPORT TO WR ON UI BASIS DURING LOAD CRASH FREQ SAVING OF 30 LAKHS TO BOTH REGIONS

  26. OPERATION ON 31/08/03 (Ganesh Chathurthi) AMOUNT SAVED FOR SR CONSTITUENTS = 107 LAKHS 50 NOS HVDC SETPOINT CHANGES DONE TO ACHIEVE THIS!!!!! Details

  27. 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

  28. 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

  29. SHARAVATHI GENERATION – TYPICAL DAY FREQ MW

  30. OPTIMAL RESERVOIR UTILISATIONSHARAVATHY / IDDUKI Rs. Rs. Rs. Rs. Rs. Rs. Rs. Rs. PLANT OPERATORS AT THESE STATIONS THINK OF THE RESERVOIR LEVEL IN RUPEES RATHER THAN IN FEET!!! Rs. Rs. Rs. Rs. Rs. Rs. Rs. Rs.

  31. 49.72 HZ

  32. MERIT ORDER : UNITS BOXED UP

  33. UI IN SR (FROM 01/01/03 TO 07/08/05) OVERVIEW • TOTAL UI TURNOVER :- 8893 MU • TOTAL UI AMOUNT DISBURSED:- 1817 CR • AVG WEEKLY TRANSACTION:- 67 MU • AVG WEEKLY UI AMOUNT DISBURSED:- 13.4 CR

  34. UI SUMMARY – 136 WKSFROM 01/JAN/03 TO 07/AUG/05)

  35. INTER-REGIONAL EXCHANGES DETAILS UPTO 136 WKS (Till 07-AUG-05) ESC TO EXIT

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

  37. 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

  38. METERING LOCATIONS IN SR • Total No Of SEMS in SR USED FOR REA 350 No.s • Total No Of SEMS in KPTCL USED FOR REA 50 No.s SR METERING DIAGRAM

  39. INTER STATE LINES METERING LOCATIONS

  40. RAICHUR SECTION Karnataka's drawl in Raichur-Hoody section: Raichur = -(CK-21) -(CK-23) -(CK-25); Muniarabd=(CK-05) ; Davanagere=(CK-07); Hiriyur=(CK-15); Nelamangala= -(CK-29)-(CK-30)-(CK-35) -(CK-36) -(CK-38); Hoody = (CK-09)+(CK-13)

  41. KPTCL'S DRAWL ON 400kV RAICHUR-DAVANAGERE SECTION (CK-RC)=-(CK-21)-(CK-23)-(CK-25) -(CK-29)-(CK-30)+ (CK-35)+ (CK-36) (CK-38) + (CK-05)+ (CK-07) +(CK-09) + (CK-13) + (CK-15) KPTCL'S DRAWL ON 400kV (CK-91)= (CK-01)+(CK-03)+(CK-RC) +(CK-11) CK'S DRAWL ON 220kV (CK-92)= -(CK-51)-(CK-53)-(CK-54)-(CK-55)-(CK-58)-(CK-59)+(KG-21) +(KG-22)+(KG-23)+(KG-24) CK'S DRAWL ON 132kV (CK-93)=-(CK-52)-(CK-56) TOTAL DRAWL (CK-94)=(CK-91)+(CK-92)+(CK-93) NOTE: SEMS ON FEEDERS NOT CARRYING ISGS POWER NOT TO BE CONSIDERED

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