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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 Transcript
slide1
Presentation

To

The Hon.CERC

on

performance

of

GEB Managed

Thermal Power Stations

New Delhi Nov.11,2003

Gen. Dept., GEB,HO,Vadodara

introduction
Introduction
  • GEB Established under Section 5 of E(S) Act 1948 in 1960
  • Present network

Gen. Dept., GEB,HO,Vadodara

power scenario of gujarat during 2002 03
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

generation capacity for gujarat system in mw
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

generation and plf for geb managed thermal power stations
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

our good performance attributed to the following activities
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

slide7
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

implementation of recommendations made by m s teri for fuel stock management
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

implementation of recommendations made by m s teri for fuel stock management contd
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

major r m activities on hand
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

slide11
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

stationwise performance ukai
Stationwise performance UKAI

Gen. Dept., GEB,HO,Vadodara

stationwise performance sikka
Stationwise performance- Sikka

Gen. Dept., GEB,HO,Vadodara

stationwise performance kltps
Stationwise performance- KLTPS

Gen. Dept., GEB,HO,Vadodara

stationwise performance dhuvaran tps
Stationwise performance- Dhuvaran TPS

Gen. Dept., GEB,HO,Vadodara

outage details for 200 210 mw thermal units 13 units cap 2710 mw
Outage details for 200/210 MW thermal units (13 units,cap-2710 MW)

In percentage

Gen. Dept., GEB,HO,Vadodara

slide24

Outage details for 120 MW thermal units (6 units, Cap-720 MW)

In percentage

Gen. Dept., GEB,HO,Vadodara

outage details for 63 5 mw lshs thermal units 4 units cap 254 mw
Outage Details for 63.5 MW LSHS thermal units(4 units, Cap-254 MW)

In percentage

Gen. Dept., GEB,HO,Vadodara

outage details for 140 mw lshs thermal units 2 units cap 280 mw
Outage Details for 140 MW LSHS thermal units(2 units, Cap-280 MW)

In percentage

Gen. Dept., GEB,HO,Vadodara

outage details for 70 75 mw lignite thermal units 3 units cap 215 mw
Outage Details for 70/75 MW Lignite thermal units (3 units, Cap-215 MW)

In percentage

Gen. Dept., GEB,HO,Vadodara

r m activities carried out during last five years
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

r m activities carried out during last five years1
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

r m activities carried out during last five years2
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

r m activities carried out during last five years3
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

materials management
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

service life of geb power stations
SERVICE LIFE OF GEB POWER STATIONS

Gen. Dept., GEB,HO,Vadodara

o m expenses for ukai tps
O&M expenses for UKAI TPS

Rs in Crores

Gen. Dept., GEB,HO,Vadodara

o m expenses for gandhinagar tps
O&M expenses for Gandhinagar TPS

Rs in Crores

Gen. Dept., GEB,HO,Vadodara

o m expenses for wanakbori tps
O&M expenses for Wanakbori TPS

Rs in Crores

Gen. Dept., GEB,HO,Vadodara

o m expenses for sikka tps
O&M expenses for Sikka TPS

Rs in Crores

Gen. Dept., GEB,HO,Vadodara

o m expenses for dhuvaran tps
O&M expenses for Dhuvaran TPS

Rs in Crores

Gen. Dept., GEB,HO,Vadodara

o m expenses for utran gas based tps
O&M expenses for Utran Gas based TPS

Rs in Crores

Gen. Dept., GEB,HO,Vadodara

slide43

THANK YOU

Gen. Dept., GEB,HO,Vadodara

o m expenses for kltps
O&M expenses for KLTPS

Rs in Crores

Gen. Dept., GEB,HO,Vadodara