1 / 56

PRESENT CONDITIONS

PRESENT CONDITIONS. FREQUENCY DURATION CURVE 2002-03, 2003-04, 2004-05 & 2005-06. FREQUENCY SPECTRUM OF SOUTHERN REGION FOR PAST SIX YEARS. VOLTAGE PROFILE OF SOUTHERN REGION FOR PAST SIX YEARS.

vstanton
Download Presentation

PRESENT CONDITIONS

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. PRESENT CONDITIONS

  2. FREQUENCY DURATION CURVE 2002-03, 2003-04, 2004-05 & 2005-06

  3. FREQUENCY SPECTRUM OF SOUTHERN REGION FOR PAST SIX YEARS

  4. VOLTAGE PROFILE OF SOUTHERN REGION FOR PAST SIX YEARS

  5. ISSUE:In general it can be seen that SR grid is shifting from low frequency/ low voltage to high frequency/high voltage regime.

  6. HIGH VOLTAGE CONDITIONS HIGH FREQUENCY

  7. HIGH VOLTAGE CONDITIONS IN SOUTHERN REGIONAL GRID

  8. VARIATION OF MAXIMUM VOLTAGES IN SR GRID DURING NOV 2005

  9. Issues Of Concern – High Voltage • Frequent switching in/out of Lines • Resulting wear and tear of equipments • Continuous High Voltage • Resulting damage to the equipments • Network Redundancy is lost with opening of EHV lines • causing Security concerns • Opening of EHV lines causes increase in system losses • Commercial losses

  10. Actions Taken • TAKING OUT THE LINE AND CONVERTING LINE REACTOR TO BUS REACTOR • MVAR ABSORPTION BY GENERATING UNITS • TRANSFORMER TAP CHANGES MANY ICT TAPS WERE CHANGED ON 400/220 ICT’s • GT TAP CHANGES • OPENING UP OF LIGHTLY LOADED REDUNDANT TIE LINES • UTILISATION OF HYBRID AC/DC NETWORK DIVERSION OF TALCHER STAGE 2 POWER THROUGH GAJUWAKA

  11. Desired Actions • ABSORPTION OF VARS BY ALL THE OPERATING UNITS WITHIN THEIR CAPABILITY CURVES • OPENING OF 220 KV AND BELOW LEVEL LIGHTLY LOADED LINES IN SATES • GENERATORS ON SYNCH CONDENSOR MODE • TO CARRY OUT DETAILED STUDIES TO FIND OUT REQUIREMENT OF ADDITIONAL REACTORS AT SUITABLE LOCATIONS

  12. HIGH FREQUENCY CONDITIONS IN SOUTHERN REGIONAL GRID

  13. FREQUENCY PROFILE DURING THE MONTHS SEPTEMBER, OCTOBER, NOVEMBER 2005 LAST YEAR COMPARISON TYPICAL HIGH FREQUENCY TREND Cont..

  14. Issues Of Concern – High Frequency • Wastage of Resources • Grid Insecurity • High Frequency also Causes High Voltage • Damage to the Equipments Cont..

  15. ACTIONS TAKEN TO ARREST HIGH FREQUENCY: • Reservoir based hydro backing/closing • Liquid Fuel Stations backing/closing down • Inter Regional Export under UI • Thermal Stations backing/Closing down • Exports under Short Term Open Access (STOA ) Details Details Details Cont..

  16. TARIFF RELATED SOLUTION:RATIONALISATION OF UI PRICE CURVE SLOPES

  17. THIS UI CURVE WAS IN EFFECT FROM 01 APR 04 TO 30 SEP 04 THIS UI CURVE WAS IN EFFECT FROM 01JAN 03 TO 31 MAR 04 NEXT

  18. HIDE TABLE SHOW TABLE SHOW GRAPH SHOW CHANGES HIDE GRAPH UI_PRICE Vs FREQUENCY:- THE EFFECT OF PRICE VECTOR ON GENERATION 600 KNEE POINT CHANGED FROM 49.8 TO 50 HZ SLOPE OF HIGH FREQUENCY BAND CHANGED FROM 30ps/0.1 HZ TO 18ps/0.1 HZ IN SR 16000MW OF THERMALS OUT OF 570 18300 MW (87%) HAS VARIABLE COST THAT 540 FALLS IN THE RANGE OF 60PAISE TO 300 paise 510 UNITS WITH A VARIBLE COST OF 90 PAISE WOULD NOW HAVE TO REDUCE AT 50.00HZ ITSELF UNITS WITH A VARIBLE COST OF 90 PAISE WOULD NOT REDUCE TILL FREQUENCY RISES ABOVE 50.2 HZ 480 450 420 390 360 330 UI PRICE IN PAISA/UNIT 300 270 UI CURVE IN FORCE SINCE 01 OCT 04 240 210 180 150 120 90 60 30 0 50.50 50.60 50.70 50.80 50.90 51.00 51.10 48.50 48.60 48.70 48.80 48.90 49.00 49.10 49.20 49.30 49.40 49.50 49.60 49.70 49.80 49.90 50.00 50.10 50.20 50.30 50.40 FREQUENCY IN HZ

  19. Tariff Related Solution • Furthur Rationlisation of UI curve to address low frequency of operation the Proposed UI Curve and the details are as follows:

  20. HIDE TABLE SHOW TABLE Back

  21. Breakup of STOA and UI in the Total Energy in SR 2005 – 06 2004 – 05 All figures in MUs

  22. Breakup of Export, Import and Wheeling in the STOA in SR 2005 – 06 2004 – 05 All figures in MUs

  23. Constituent-wise STOA Import/Export Energy 2004 – 05 2005 – 06 All figures in MUs

  24. Month-wise Export/Import/Wheeling through STOA 2004 – 05 2005 – 06 All figures in MUs

  25. Back

  26. STOA CASE - 1 WBSEB to AJMER (Rajasthan) 20 MW for 27 days from 0000 to 1700 hrs. and 2300 to 2400 hrs.

  27. SR WBSEB - AJMER WHEEL THROUGH SR (0000 HRS – 1700 HRS AND 2300-2400 HRS) 20 MWFROM 05.01.05 to 31.01.05 HVDC BACK TO BACK AT VINDHYACHAL IN WR CUSTOMER: NVVNL TRADER: NVVNL RAJASTHAN WB INJECTING UTILITY WBSEB AJMER NR DRAWEE UTILITY AJMER (DISCOM) INTERVENING REGION SR & WR ER • INTERVENING REGIONAL LINK • ER-SR • SR-WR • WR-NR WR HVDC BACK TO BACK AT BHADRWATHI IN WR INTERVENING STATE TRANSMISSION UTILITY RRVPN CAPACITY APPROVED 20 MW DAILY PERIOD 0000-1700 & 2300-2400 hrs HVDC BACK TO BACK AT GAZUWAKA IN SR DATE OF COMMENCEMENT 05-01-05 DATE OF EXPIRY 31-01-05…

  28. SR WBSEB - AJMER WHEEL THROUGH SR (0000 HRS – 1700 HRS AND 2300-2400 HRS) 20 MW FROM 05.01.05 to 31.01.05 HVDC BACK TO BACK AT VINDHYACHAL IN WR EXPORT AT WB 20 MW LOSSES IN ER 3% NR AT ER-SR PERIPHERY 19.4 MW RAJASTHAN WB LOSSES IN SR 3.12% AJMER AT SR-WR PERIPHERY 18.8 MW ER LOSSES IN WR 4% WR AT WR-NR PERIPHERY 18.1 MW LOSSES IN NR 3% HVDC BACK TO BACK AT BHADRWATHI IN WR AT NR-RAJ.PERIPHERY 17.6 MW LOSSES IN RAJASTHAN 3% AJMER RECIEVES 17.1 MW HVDC BACK TO BACK AT GAZUWAKA IN SR TOTAL LOSSES FOR TRANSACTION 2.9 MW…

  29. SR MORE DETAILS NEW WBSEB - AJMER WHEEL THROUGH SR (0000 HRS – 1700 HRS AND 2300-2400 HRS) 20 MW AT INJECTION POINT FROM 05.01.05 to 31.01.05 HVDC BACK TO BACK AT VINDHYACHAL IN WR APPLICATION PROCESSING FEE Rs 5000 PER TRANSACTION RAJASTHAN NR WB • SCHEDULING CHARGES PER DAY • Rs 3000 FOR ERLDC • Rs 3000 FOR SRLDC • Rs 3000 FOR WRLDC • Rs 3000 FOR NRLDC • Rs 3000 FOR RAJASTHAN AJMER ER WR • TRANSMISSION CHARGES PER MW PER DAY • Rs 313.93 FOR CTU-ER • Rs 1462.44 FOR ER-SR LINK • Rs 700.91 FOR CTU-SR • Rs 881.49 FOR SR-WR LINK • Rs 339.98 FOR CTU-WR • Rs 233.92 FOR WR-NR LINK • Rs 649.86 FOR CTU-NR • Rs 686.3 FOR RAJASTHAN HVDC BACK TO BACK AT BHADRWATHI IN WR HVDC BACK TO BACK AT GAZUWAKA IN SR TOTAL TRANSMISSION CHARGE PER UNIT 34.15Ps/….

  30. STOA CASE - 2 APTRANSCO to MPSEB 200 MW for 24 days from 0000 to 0500 hrs. and 2300 to 2400 hrs.

  31. MP WR GRID HVDC BACK TO BACK AT BHADRWATHI IN WR AP APTRANSCO - MPSEB THROUGH NVVNL (0000 HRS – 0500 HRS and 2300 HRS – 2400 HRS ) 200 MW AT INJECTION POINT for 24 days i.e 08.01.05 to 31.01.05 CUSTOMER: NVVNL TRADER: NVVNL INJECTING UTILITY APTRANSCO DRAWEE UTILITY MPSEB • INTERVENING REGIONAL LINK • SR-WR CAPACITY APPROVED 200 MW DAILY PERIOD 0000-0500& 2300-2400 HRS DATE OF COMMENCEMENT 08-01-05 DATE OF EXPIRY 31-01-05…

  32. MP WR GRID HVDC BACK TO BACK AT BHADRWATHI IN WR AP APTRANSCO - MPSEB THROUGH NVVNL (0000 HRS – 0500 HRS and 2300 HRS – 2400 HRS ) 200 MW AT INJECTION POINT for 24 days i.e 08.01.05 to 31.01.05 EXPORT AT AP 200 MW LOSSES IN SR 3.12% AT SR PERIPHERY 193.8 MW CTU LOSSES IN WR 4% MP RECIEVES 186.1 MW TOTAL LOSSES FOR TRANSACTION 13.9 MW…

  33. MP WR GRID HVDC BACK TO BACK AT BHADRWATHI IN WR AP MORE DETAILS NEW APTRANSCO - MPSEB THROUGH NVVNL (0000 HRS – 0500 HRS and 2300 HRS – 2400 HRS ) 200 MW AT INJECTION POINT for 24 days i.e 08.01.05 to 31.01.05 APPLICATION PROCESSING FEE Rs 5000 PER TRANSACTION • SCHEDULING CHARGES PER DAY • Rs 3000 FOR SRLDC • Rs 3000 FOR WRLDC • TRANSMISSION CHARGES PER MW PER DAY • Rs 700.91 FOR CTU-SR • Rs 881.49 FOR SR-WR LINK • Rs 339.98 FOR CTU-WR TOTAL TRANSMISSION CHARGE PER UNIT 33Ps/.

  34. SUMMARY OF TRANSACTIONS WITH OLD AND NEW RATES

  35. 220 KV CHIKKODI – KOLHAPUR D/CLINE KOLHAPUR (MAHARASHTRA) CHIKKODI KARNATAKA M.L.PURA BELGAUM MAPUSA NARENDRA 220 PONDA (Goa) AMBEWADI HUBLI XELDEM(GOA) KODASALLI KADRA NAGJHARI 220 KV CIRCUIT 1 GUTTUR KAIGA NOT TO SCALE DISTANCES EXAGERATED FOR CONVENIENCE 400 KV CIRCUIT 2

  36. STOA Charges Analysis/Comparision Back DETAILS

  37. BACK CALCULATION FOR THE SHORT TERM CUSTOMER FOR THE TRANSACTION OF APTRANSCO – MPSEB OF NVVNL (200 MW)

  38. BACK CALCULATION FOR THE SHORT TERM CUSTOMER FOR THE TRANSACTION OF WBSEB – AJMER(RAJASTHAN) (20 MW)

  39. BACK CALCULATION FOR THE SHORT TERM CUSTOMER FOR THE TRANSACTION OF APTRANSCO – MPSEB OF NVVNL (200 MW)

  40. BACK CALCULATION FOR THE SHORT TERM CUSTOMER FOR THE TRANSACTION OF WBSEB – AJMER(RAJASTHAN) (20 MW)

  41. MERIT ORDER : UNITS BOXED UP Back

  42. INTER-REGIONAL IMPORTS (During the week 21st-27th March, 05)

  43. INTER-REGIONAL IMPORTS (During the week 21st-27th March, 05)

  44. INTER-REGIONAL IMPORTS (During the week 21st-27th March, 05)

More Related