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Presentation To The Hon.CERC on performance of GEB Managed Thermal Power Stations

Presentation To The Hon.CERC on performance of GEB Managed Thermal Power Stations . New Delhi Nov.11,2003. Introduction. GEB Established under Section 5 of E(S) Act 1948 in 1960 Present network . Power Scenario of Gujarat during 2002-03.

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Presentation To The Hon.CERC on performance of GEB Managed Thermal Power Stations

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  1. Presentation To The Hon.CERC on performance of GEB Managed Thermal Power Stations New Delhi Nov.11,2003 Gen. Dept., GEB,HO,Vadodara

  2. Introduction • GEB Established under Section 5 of E(S) Act 1948 in 1960 • Present network Gen. Dept., GEB,HO,Vadodara

  3. Power Scenario of Gujarat during 2002-03 • Installed Capacity MW - 8576 • Max.Daily MUs Catered - 173 • Max.Daily GEB MUs Catered- 88.869 • Max.U/R Demand MW - 9040 • Max.Demand Catered MW - 7743 Gen. Dept., GEB,HO,Vadodara

  4. Generation Capacity for Gujarat System in MW • GEB GEN.capacity 4888 • Pvt. Sector Capacity 2156 • Central Sector (Share) 1532 • Gujarat System Total 8576 Gen. Dept., GEB,HO,Vadodara

  5. Generation and PLF for GEB Managed Thermal Power Stations YearGen.in MUSPLF% • 1998-99 22518 63.74 • 1999-00 24139 63.70 • 2000-01 25640 67.85 • 2001-02 25749 68.14 • 2002-03 26338 69.69 Gen. Dept., GEB,HO,Vadodara

  6. Our Good Performance attributed to the following activities • Maximize the utilization of available generation capacity • Adopted good O&M practices as suggested by CENPEEP. • Implementation of recommendations made by M/s TERI for fuel stock management • Carrying out R&M activities to improve Generation level at all power stations. • Use of washed coal up to 30% at Ukai TPS and imported coal up to 25% at Gandhinagar TPS. • Change of Milling system by MPSP system at Ukai TPS & Wanakbori TPS. • Energy and Thermal audit in thermal power stations. • Intensive boiler tube thickness survey during AOH. Gen. Dept., GEB,HO,Vadodara

  7. Implementation of recommendations made by Centre for Power Efficiency & Environment Protection(CENPEEP) for performance optimization • Performance Optimization with participation of working level engineers from operation, maintenance, C&I, O&E Deptt. • Fixation of monthly performance targets and action plan for major problem area by performance group. • Routine performance testing on boiler system with accurate instrument • Feed back of work done to promote efficiency,heat rate improvements Gen. Dept., GEB,HO,Vadodara

  8. Implementation of recommendations made by M/s TERI for fuel stock management • The stocks are not spreaded to entire length of the yard and are well organised and consolidated • Coal is stacked in smaller and regular shapes preferably trapezoidal or conical shapes to facilitate accurate measurement • Coal stocks are kept compressed by using dozers to remove air pockets to avoid fires • Bulk densities of compressed coal stock is determined regularly to arrive at an average figure for reporting actual physical stock Gen. Dept., GEB,HO,Vadodara

  9. Implementation of recommendations made by M/s TERI for fuel stock management (contd..) • Direct feeding of Indian coal is done to bunkers as far as possible to avoid unnecessary stocking/reclaiming • Coal stocks are used on first come first out basis to avoid deterioration in coal quality resulting in lowering of TPS performance • Ground stocks are minimised to reduce rehandling costs • Coal reject is being monitored vigorously so that it remains within the limit of 0.5 to 1 % • 100 % coal reject utilization. Gen. Dept., GEB,HO,Vadodara

  10. Major R&M activities on hand • RLA study for renovation of 2x120 MW units of Ukai TPS (BHEL) • RLA study for renovation of 2x120 MW units of Gandhinagar TPS ( NTPC) • Renovation programme for 2x 70 MW units of KLTPS • Repowering of 4x63.5 MW units of Dhuvaran TPS Gen. Dept., GEB,HO,Vadodara

  11. Saving due to reduction in aux.consumption and Sp. Oil consumption compared previous year for GEB & GSECL Thermal Power Stations Gen. Dept., GEB,HO,Vadodara

  12. Stationwise performance UKAI Gen. Dept., GEB,HO,Vadodara

  13. Stationwise performance G’nagar ( Unit 1 to 5) Gen. Dept., GEB,HO,Vadodara

  14. Stationwise performance Wanakbori ( Unit 1 to 7) Gen. Dept., GEB,HO,Vadodara

  15. Stationwise performance- Sikka Gen. Dept., GEB,HO,Vadodara

  16. Stationwise performance- KLTPS Gen. Dept., GEB,HO,Vadodara

  17. Stationwise performance- Dhuvaran TPS Gen. Dept., GEB,HO,Vadodara

  18. Stationwise performance- 135 MW Utran Gas based TPS Gen. Dept., GEB,HO,Vadodara

  19. Performance for 200/210 MW thermal units (13 units,cap-2710 MW) Gen. Dept., GEB,HO,Vadodara

  20. Performance for 120 MW thermal units (6 units, Cap-720 MW) Gen. Dept., GEB,HO,Vadodara

  21. Performance for 63.5 MW LSHS thermal units(4 units, Cap-254 MW) Gen. Dept., GEB,HO,Vadodara

  22. Performance for 140 MW LSHS thermal units(2 units, Cap-280 MW) Gen. Dept., GEB,HO,Vadodara

  23. Outage details for 200/210 MW thermal units (13 units,cap-2710 MW) In percentage Gen. Dept., GEB,HO,Vadodara

  24. Outage details for 120 MW thermal units (6 units, Cap-720 MW) In percentage Gen. Dept., GEB,HO,Vadodara

  25. Outage Details for 63.5 MW LSHS thermal units(4 units, Cap-254 MW) In percentage Gen. Dept., GEB,HO,Vadodara

  26. Outage Details for 140 MW LSHS thermal units(2 units, Cap-280 MW) In percentage Gen. Dept., GEB,HO,Vadodara

  27. Outage Details for 70/75 MW Lignite thermal units (3 units, Cap-215 MW) In percentage Gen. Dept., GEB,HO,Vadodara

  28. R & M Activities carried out during last five years Ukai TPS • Replacement of water gland sealing with steam gland sealing in 120 MW unit no.1 • Introducing MPSP system in all coal mills. • Replacement of bituminous class-B insulation of Generator stator winding with epoxy class-F insulation in unit no.3 &4 • Installation of Dual flue gas conditioning system to improve flue gas SPM emission level in unit no. 4 • Filling up of Dummy fields and providing microprocessor based control in ESP of Unit 3,4&5 to improve the performance of ESP. • Replacement of excitation system with static excitation system in unit no 1&2. Gen. Dept., GEB,HO,Vadodara

  29. R & M Activities carried out during last five years Gandhinagar TPS • Replacement of low temperature superheater in unit No 1 • Replacement of suction type coal mill with new pressure type coal mill in unit no.1. Work in progress for unit no.2 • Replacement of top and middle air preheater blocks in unit no.1. Work in progress for unit no. 2 • Renovation and Modernisation of complete ash disposal system in progress. • Replacement of 2 nos. ABB make 220 KV circuit breakers with SF6 circuit breakers. Gen. Dept., GEB,HO,Vadodara

  30. R & M Activities carried out during last five years Wanakbori TPS • Replacement of Air Pre heater elements in unit 1 to 6 • Replacement of coal mills by MPSP system with controlled rejection level in unit 1 to 6 • Replacement of condenser tubes in unit 1 to 3 • Replacement of HP heaters in unit 4 to 6 • Replcement of Jyoti make 6.6 kV min.Oil Ckt.breaker with vacuum SF6 circuit breaker • Replacement of economiser coils in unit 1,2,3 • Replacement of 1200 KW motors for ID and PA fans • Providing 100% leak proof gas isolators in flue gas path in unit 1 to 3 Gen. Dept., GEB,HO,Vadodara

  31. R & M Activities carried out during last five years Dhuvaran TPS • Residual Life Assessment of all 6 units carried out during 1999-00 • Replacement of old unserviceable HP heaters of unit no 1 to 4 • Construction of new IDCT for unit 5&6 • Replacement of 11 KV min.Oil circuit breaker with Jyoti make Vacuum circuit breaker Gen. Dept., GEB,HO,Vadodara

  32. Materials management • ARC for following consumable items to reduce procurement process time and the inventory level • MPSP mills spares • Ash plant spares • Bearings • Welding electrodes • All chemicals • Procurement of spares from OEM • Finalisation of orders within 90 to 120 days Gen. Dept., GEB,HO,Vadodara

  33. SERVICE LIFE OF GEB POWER STATIONS Gen. Dept., GEB,HO,Vadodara

  34. O&M expenses for UKAI TPS Rs in Crores Gen. Dept., GEB,HO,Vadodara

  35. O&M expenses for Gandhinagar TPS Rs in Crores Gen. Dept., GEB,HO,Vadodara

  36. O&M expenses for Wanakbori TPS Rs in Crores Gen. Dept., GEB,HO,Vadodara

  37. O&M expenses for Sikka TPS Rs in Crores Gen. Dept., GEB,HO,Vadodara

  38. O&M expenses for Dhuvaran TPS Rs in Crores Gen. Dept., GEB,HO,Vadodara

  39. O&M expenses for Utran Gas based TPS Rs in Crores Gen. Dept., GEB,HO,Vadodara

  40. Meritorious Awards received by GEB & GSECL Power Stations Gen. Dept., GEB,HO,Vadodara

  41. Meritorious Awards received by GEB & GSECL Power Stations Gen. Dept., GEB,HO,Vadodara

  42. Meritorious Awards received by GEB & GSECL Power Stations Gen. Dept., GEB,HO,Vadodara

  43. THANK YOU Gen. Dept., GEB,HO,Vadodara

  44. O&M expenses for KLTPS Rs in Crores Gen. Dept., GEB,HO,Vadodara

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