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SOUTHERN REGIONAL LOAD DESPATCH CENTRE

WELCOME TO SHRI A. MANGLIK EXECUTIVE DIRECTOR. POWER GRID CORPORATION OF INDIA LIMITED. SOUTHERN REGIONAL LOAD DESPATCH CENTRE. PRESENTATION OVERVIEW. GRID OPERATION – AN OVERVIEW GRID OPERATION – TYPICAL ISSUES IN THE PAST GRID OPERATION - PRESENT STATUS

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SOUTHERN REGIONAL LOAD DESPATCH CENTRE

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  1. WELCOME TO SHRI A. MANGLIK EXECUTIVE DIRECTOR POWER GRID CORPORATION OF INDIA LIMITED SOUTHERN REGIONAL LOAD DESPATCH CENTRE

  2. PRESENTATION OVERVIEW • GRID OPERATION – AN OVERVIEW • GRID OPERATION – TYPICAL ISSUES IN THE PAST • GRID OPERATION - PRESENTSTATUS • OPEN ACCESS – REGULATIONS BY CERC • SHORT TERM OPEN ACCESS – EXPERIENCE SO FAR • SHORT TERM OPEN ACCESS – CASE STUDIES • OPEN ACCESS – CHALLENGES AND TASKS AHEAD

  3. THANK YOU

  4. REGIONAL GRIDSQUICK FACTS

  5. REGIONAL GRIDS INSTALLED CAPACITY NORTHERN :- 33,782 MW EASTERN :- 16,681 MW SOUTHERN :- 34,743 MW WESTERN :- 33,162 MW NORTH-EASTERN :- 2,444 MW TOTAL 1,20,812 MW NORTHERN REGION NORTH-EASTERN REGION EASTERN REGION WESTERNREGION SOUTHERN REGION

  6. ‘ ELECTRICAL’ REGIONS 1 NORTHERN REGION NORTH-EASTERN REGION EASTERN REGION 2 WESTERNREGION 3 SOUTHERN REGION SAME FREQUENCY FROM GUJARAT TO ARUNACHAL PRADESH WITH EFFECT FROM MARCH 2003 ABOUT 2800 KMS! APART

  7. ‘ELECTRICAL’ REGIONS NORTHERN REGION 1 NORTH-EASTERN REGION EASTERN REGION WESTERNREGION 2 SOUTHERN REGION WITH THE COMMISSIONING OF THE TALA PROJECT CONNECTING THE EASTERN AND NORTHERN GRIDS, INDIA WILL HAVE ONLY TWO GRIDS

  8. Growth of installed capacity for electricity in India

  9. Source-wise composition of installed capacity in India(1,20,812 in 2005)

  10. 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:- 33,162 MW(27.6%) WEATHER :- South-west monsoon North-east monsoon SEA COAST :- AROUND 4000 KM

  11. GROWTH OF INSTALLED CAPACITY OF SR IN MW Average Growth ~ 5 %

  12. INSTALLED CAPACITY IN SR as on 30-11-05 The above capacity does not includes --- About 1342 MW of Wind Mill Capacity in Tamil Nadu. --- Micro and Captive plants in different states.

  13. SOURCE-WISE INSTALLED CAPACITY OF SR IN MW OTHERS WIND NUCLEAR HYDRO GAS THERMAL 33,162 MW

  14. 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

  15. TYPICAL LOAD SPREAD IN SR LOAD 500-1200 MW LOAD 200-500 MW

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

  17. GRID OPERATIONTYPICAL ISSUES IN THE PAST

  18. 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 :

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

  20. GRID PRESENT STATUS

  21. GRID OPERATION –PRESENT STATUS • STABILISED SYSTEM FREQUENCY • IMPROVED VOLTAGES • MERIT ORDER OPERATION • INTER REGIONAL EXCHANGES • IMPROVED GRID SECURITY

  22. GRID PRESENT STATUSCARDINAL EVENTS

  23. GRID PRESENT STATUS -- CARDINAL EVENTS UI • AVAILABILITY BASED TARIFF • UNIFIED LOAD DESPATCH SCHEME • GENERATION ADDITION • INTERREGIONAL AC / HVDC LINKS • INTER REGIONAL EXCHANGES • OPERATIONAL EXCELLENCE ...THESE EVENTS CHANGED THE FACE OF GRID OPERATION

  24. MONSOONS SOUTH WEST MONSOON NORTH EAST MONSOON

  25. STABILISED SYSTEM FREQUENCY • TYPICAL FREQUENCY CURVE • FREQUENCY DURATION CURVE • RECORD FVI OF 0.04

  26. FREQUENCY PROFILE 2002, 2003&2004

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

  28. FREQUENCY SPECTRUM OF SOUTHERN REGION FOR PAST FIVE YEARS

  29. COMPARISION OF BANGALORE VOLTAGE-TYPICAL DAY 2003 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

  30. ABOUT 16000 MW OF CAPACITY IS BELOW 300 Ps ABOUT14200 MW OF CAPACITY IS BELOW 200 Ps CUM. INS. CAP. ABOUT 7000 MW OF CAPACITY IS BELOW 100 Ps

  31. 49.72 HZ

  32. MERIT ORDER : UNITS BOXED UP

  33. SHARP PEAK DEEP VALLEY DEEP VALLEY

  34. 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!!!

  35. OPPORTUNISTIC UI TRADE POWER EXPORT TO WR ON UI BASIS DURING LOAD CRASH FREQ

  36. 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

  37. 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

  38. 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 Rs. Rs. Rs. Rs. Rs. Rs. Rs. Rs. PLANT OPERATORS AT SHARAVATHY THINK OF THE RESERVOIR LEVEL IN RUPEES RATHER THAN IN FEET!!! Rs. Rs. Rs. Rs. Rs. Rs. Rs. Rs.

  39. Growth of Inter Regional Energy Exchanges 25000 22500 20000 15000 13000 Total MU During The Year 9730 10000 8230 7350 5000 0 1999-2000 2000-2001 2001-2002 2002-2003 2003-2004 Year IR Energy Exchanges

  40. Reconciliation of UI Accounts • 218 th Commercial Committee Meeting of SREB held on 06-12-2005 • UI and Reactive Energy Charges Pool Accounts Payment and distribution for the year 2004-05 have been reconciled by all the constituents except AP.

  41. SUMMARY OF UI – 142WKS(FROM 01/JAN/03 TO 20/NOV/05)

  42. UI IN SR (FROM 01/01/03 TO 20/11/05) • TOTAL UI TURNOVER :- 10059 MU • TOTAL UI AMOUNT DISBURSED:- 1923 CR • AVG WEEKLY TRANSACTION:- 67 MU • AVG WEEKLY UI AMOUNT DISBURSED:- 13 CR

  43. Back

  44. INTER-REGIONAL EXCHANGES DETAILS UPTO 151 WKS (Till 20.11.05) *from 06.09.04 (when ER exchanges computed @ respective frequencies)

  45. MAJOR AND MINOR DISTURBANCES SINCE 1994 NO DISTURBANCES DESPITE LOSING ENTIRE SUPER GENERATING PLANTS LIKERAMAGUNDAM,VIJAYAWADA,KOTHAGUDEM, NORTH CHENNAI, SHARAVATHY ETC

  46. SLDC SLDC SLDC SUB LDC SUB LDC SUB LDC RTU RTU RTU Unified Grid Operation National Level NLDC Regional Level ERLDC WRLDC NRLDC SRLDC NERLDC 5 Nos. State HQ Level 32 Nos. Group / Distt Level 51 Nos. Plant / Sub- Station Level 1160 Nos.

  47. Hierarchy of The ULDC Scheme in Southern Region RLDC,Bangalore SCC, Pondy CPCC Hyderabad Kalamassery Chennai Bangalore Andhra Kerala Tamilnadu Karnataka Bangalore Hyderabad Kalam’erry Chennai Lingusugur Cuddapah Kannur Erode Warangal Trivandrum Madurai Hubli Vijayawada

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