Siemens, V94.2, 2006, Combined Cycle Power Plant, 445 MW, 50Hz

Description

  1. Overview
    1. Combined cycle power plant based on Siemens V94.2 gas turbines.
    2. Total plant output: 445 MW.
    3. Plant installed in 2006; natural gas available from March 2009.
    4. Commissioning dates: GT #1A on 30 March 2009, GT #1B on 10 March 2009.
    5. Open cycle declared on 04 June 2009.
    6. STG commissioned on 22 June 2010.
    7. Combined cycle declared on 30 June 2010.
    8. Running hours: GT #1A = 32,361 EOH, GT #1B = 22,913 EOH, STG = 19,460 EOH.
    9. Steam turbine operating hours: 17,900 hours.
    10. Gas turbines feature built-in dehumidifier (V94.2).
  2. Technical Details
    1. Gas turbine: Siemens Electric V94.2, 139 MW, quantity: 2.
    2. Gas turbine generator: Electrosila, quantity: 2.
    3. Steam turbine: LMZ K166/107, 158 MW, quantity: 1.
    4. Steam turbine generator: Electrosila 15.85 kV, 200 MW, quantity: 1.
    5. Heat recovery boiler: L&T, HP 222 TPH @ 107 bar, MP 38 TPH @ 22 bar, LP 19 TPH @ 4.5 bar, quantity: 2.
    6. Generator transformers: Crompton Greaves 400 kV / 15.75 kV, quantity: 2.
    7. Auxiliary transformers: Crompton Greaves 6.6 kV / 415 V, quantity: 2.
    8. HP/IP/LP boiler feedwater pumps: Nasosenergomash, 270 m³/hr, quantity: 3.
    9. Boiler feedwater pumps: Nasosenergomash, 65 m³/hr, quantity: 2.
    10. Boiler feedwater pumps: Kirloskar, 25 m³/hr, quantity: 2.
    11. Condensate extraction pump: Nasosenergomash 245 TPH, quantity: 2.
    12. DM plant: Doshi Ion Exchange, quantity: 1.
    13. CW pumps: Kirloskar, quantity: 3.
    14. CW pump motors: WEG, quantity: 3.
    15. Cooling tower: Paharpur, 16 cells, quantity: 1.
    16. Emergency diesel generator: Cummins 1250 kVA, quantity: 1.
  3. Gas Turbine Specifications
    1. Brand: Siemens.
    2. Model: BM 380.
    3. Frame: V94.2.
    4. Design ISO output: 156,000 kW.
    5. Overall correction factor for power: 0.8938.
    6. Auxiliary power consumption: 1,409 kW.
    7. Net site electrical output in open cycle mode: 139,530 kW.
    8. Net electrical output in combined cycle mode: 139,086 kW.
    9. Heat rate correction factor to site condition: 0.966.
    10. Net heat rate on LCV basis: 2,675.6 kcal/hr (GT heat rate for combined cycle operation).
    11. Type of fuel: natural gas.
    12. Type of governing system: Siemens Symadyn.
    13. Exhaust temperature: 556.2 °C.
    14. Exhaust flow: 480.87 kg/sec.
    15. Fuel consumption: 9.9 kg/sec.
    16. NOx level: 50 ppm.
    17. NOx control: dry low NOx burners.
    18. Turning gear: through oil jets around 100 rpm.
    19. Full speed of machine: 3,000 rpm.
    20. Compressor: axial, 17 stage, 5th and 10th stage for bleeding.
    21. Turbine: 2 combustion chambers, 4 stage.
    22. Water washing: DM water, offline as well as online.
    23. Starting device: electrical starting through generator and frequency converter; power requirement = 2,900 kW.
    24. Air filter: 2 micron, main and pre filter, self-cleaning pulse jet type.
  4. Gas Turbine Auxiliaries
    1. Shaft mounted oil pump: not provided.
    2. Auxiliary oil pump: 37 kW, quantity 2.
    3. Emergency oil pump: 37 kW, quantity 1.
    4. Vapour extraction fan: 0.3 kW, quantity 1.
    5. Turning gear: hydraulic oil driven, quantity 1.
    6. Air filter cleaning compressor: quantity 2.
  5. GT Exhaust System - Diverter Damper
    1. Brand: Bachmann Limited, Faridabad.
    2. Position: between inlet duct and guillotine damper.
    3. Damper dimensions: 5,600 x 5,600 mm.
    4. Quantity: 2 for GTG #1A and #1B.
    5. Sealing system: duplex.
    6. Sealing efficiency: 100% with SAF, 99.98% without SAF.
    7. Function: isolation.
    8. Operating time: 60 seconds.
    9. Max. operating temperature: 600 °C.
    10. Main drive actuator: Limitorque, Faridabad SMB-4, quantity 1, data sheet no. J-0787/03-004.
    11. Gear box: Limitorque, Faridabad H10 BC + SGA2.92, quantity 1, data sheet no. J-0787/03-004.
    12. Motor for blower: CGL sq. cage, 3 phase AC, size 20 HP, quantity 2, data sheet no. J-0787-03-0006.
    13. Gate valve actuator: Limitorque, Faridabad electric, size L120-20, quantity 2, data sheet no. J-0787-03-0004.
    14. B.F.V. actuator: Limitorque, Faridabad electric, size L120-10 + T-100, quantity 1, data sheet no. J-0787-03-0004.
    15. Gate valve: K.S.B., class 150#, size 200 NB, quantity 2.
    16. Blade seals: Bachmann Limited, Faridabad, flexible metal, material Inconel 625, quantity 2 sets/unit (1 HRSG side and 1 bypass side).
    17. Reference documents: GA drg no. J-0787-03-0000, R4, 10 sheets.
  6. GT Exhaust System - Guillotine Damper
    1. Position: between diverter damper and HRSG inlet.
    2. Damper dimensions: 5,600 mm x 5,600 mm.
    3. Quantity: 2 for GTG #1A and #1B.
    4. Sealing system: duplex.
    5. Sealing efficiency: 100% with SAF, 99.98% without SAF.
    6. Function: isolation.
    7. Operating time: 5 minutes.
    8. Max. operating temperature: 600 °C.
    9. Main drive actuator: Limitorque, Faridabad SMB-3, quantity 1, motor 19.74 HP, 4 pole.
    10. Gear box: Limitorque, Faridabad H6 BC, quantity 1.
    11. Motor for blower: CGL sq. cage, 3 phase AC, size 7.26 HP, 2 pole.
    12. Gate valve actuator: Limitorque, Faridabad electric, size L120-10, motor 0.54 HP, 2 pole.
    13. Reference documents: P&ID no. J-0787-03-0011, R2.
  7. GT Exhaust System - Expansion Joints and Silencers
    1. Expansion joint (HRSG inlet): quantity 2 for GTG #1A and #1B; axial compression movement 120 mm, axial extension movement 10 mm, lateral movement 110 mm; MOC inlet frame IS 2062 Gr. B, outlet frame SA 387 Gr. 12, fabric element UFV-100; reference documents drg no. J-0787-07-0000, R4 (2 sheets).
    2. Expansion joint (diverter damper inlet): quantity 2 for GTG #1A and #1B; axial compression movement 40 mm, axial extension movement 10 mm, lateral movement 10 mm; MOC inlet frame IS 2062 Gr. B, fabric element UFV-100; reference documents drg no. J-0787-01-0000, R3 (2 sheets).
    3. Expansion joint (diverter damper outlet towards stack): quantity 2 for GTG #1A and #1B; axial compression movement 30 mm, axial extension movement 10 mm, lateral movement 10 mm; MOC inlet frame IS 2062 Gr. B, fabric element UFV-100; reference documents drg no. J-0787-02-0000, R3 (2 sheets).
    4. Silencer transition (sq. to sq.) and (sq. to round): quantity 2 for GTG #1A and #1B; MOC shell plate IS 2062 Gr. B, insulation cover SS 409; reference documents drg no. J-0787-08-0000, R3 (2 sheets), drg no. J-0787-10-0000, R2 (2 sheets).
    5. Exhaust silencer: quantity 2 for GTG #1A and #1B; MOC main frame IS 2062 Gr. B, insulation cover SS 409; reference documents drg no. J-0787-09-0000, R3 (3 sheets).
    6. Bypass stack: quantity 2 for GTG #1A and #1B; MOC shell plate IS 2062 Gr. B, insulation cover SS 409; reference documents drg no. J-0787-11-0000, R2 (3 sheets).
  8. HRSG Performance Parameters
    1. Manufacturer: Larsen & Toubro Limited.
    2. Type of boiler: vertical induced circulation.
    3. Max. continuous rating (MCR): HP circuit - 221 tonnes/hr, IP circuit - 38 tonnes/hr, LP circuit - 38.85 tonnes/hr.
    4. Steam temperature at terminal point: HP circuit - 528 °C, IP circuit - 324 °C, LP circuit - 223 °C.
    5. Steam pressure at terminal point: HP circuit - 112.7 bar, IP circuit - 23.70 bar, LP circuit - 4.5 bar.
  9. HRSG HP Drum
    1. Brand: ISGEC, Yamunanagar.
    2. Quantity: 1 for HRSG A, 1 for HRSG B.
    3. Construction code: IBR 1950.
    4. Fluid circulated: steam and DM water.
    5. Heating surface: 31.42 m².
    6. Capacity: 41.5 m³.
    7. Dimensions: OD 2,500 x 10,458 mm length.
    8. Thickness: shell 95.6 mm, dish end 54.9 mm.
    9. Insulation thickness: 200 mm.
    10. Material: SA 302 Grade B.
    11. Weight: empty 81.3 t.
    12. Design pressure: 127.5 kg/cm² (g).
    13. Hydro test pressure: 191.25 kg/cm² (g).
    14. Design temperature: 331 °C.
    15. Reference documents: GA drg no. PV-01-1564.
  10. Availability and Inspection
    1. Available for sale.
    2. Sold ex-foundation, ex-site, as is.
    3. Frequency: 50 Hz. A 60 Hz conversion is not included and would be undertaken by the buyer.
    4. The plant can be inspected on its foundation after signing an NCND agreement and issuing an LOI and proof of funds.
    5. Dismantling can start within 20 days of the advance payment.
    6. The full equipment specification, with running hours, is available on request.