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GE, 9FA.03 / D11, Unused, 750 MW, 50 Hz, Combined Cycle Power Plant

Description

  1. Overview
    1. Two nos. – 750 MW each, unused gas based complete combined cycle power plants.
    2. Each module has two gas turbines GE 9FA.03 (DLN2+) and one steam turbine GE D11.
    3. Each GT exhaust is directed to a triple pressure unfired, natural circulation horizontal, type CMI USA HRSG.
    4. This configuration helps turndown operation of station up to 45%.
    5. Net combined cycle efficiency at site condition is approx 57% on LHV basis.
    6. Inherent design of the gas turbine reduces NOx emissions to < 25 ppmvd.
    7. Noise level of the station is below 85 dB.
    8. Machines operating frequency is 50 Hz and power factor 0.85.
  2. Ambient Conditions
    1. Site elevation above MSL: 27 meter.
    2. Ambient temperature: 29 deg C.
    3. Relative humidity: 70%.
  3. Major Operation Parameters
    1. Base load gas requirement per GT is 1.5 million standard cubic meter per day (mmscmd).
    2. Base load gross heat rate on GCV basis: 1780 kcal/kWh.
    3. Nominal station auxiliary power consumption is < 3%.
  4. Station Water Requirements for 3 Modules
    1. Total water requirement: 2544 cum/hr.
    2. Cooling tower make up: 2394 cum/hr.
    3. Power cycle make up: 37 cum/hr.
    4. Service water and other: 113 cum/hr.
  5. Technical Data Sheet of Equipment
    1. Attachment A.
  6. Major Equipment Run Hours
    1. Run hours: nil (designed maintenance cycle hot gas path inspection (HGPI) 24000 hrs and major inspection (MI) 48000 hrs).
  7. Installed and Uninstalled Packages
    1. Some part of the equipment is installed and some equipment are in unerected condition.
    2. For details please refer to Attachment B.
  8. Gas Turbine Details
    1. Make: General Electric, USA.
    2. Model: PG 9351 FA.03.
    3. Fuel: Natural gas.
    4. Combustion: Dry low NOx DLN 2.0+.
    5. Compressor stage: 18.
    6. Turbine stage: 3.
    7. Operating speed: 3000 RPM.
    8. Trip speed: 3300 RPM.
    9. Starting means: Static start.
    10. Air filtration: Self cleaning.
    11. Inlet air cooling: Evaporative cooler on/off condition.
    12. Compressor cleaning: Offline / online.
    13. Enclosure: Indoor.
    14. Cooling: Closed loop.
    15. NOx emissions: Gas fuel, 25 ppm ref 15% O2.
  9. Generator Details
    1. Manufacturer: GE.
    2. Type: 324 LU.
    3. Prime mover: GT 9FA.
    4. Cooling method: Hydrogen cooled.
    5. Rated capacity: 310.725 MVA.
    6. Rated terminal voltage: 15.75 kV.
    7. Rated stator current: 11390 A.
    8. Rated power factor: 0.85 (lag), capability to 0.95 (lead).
    9. Rated speed: 3000 RPM.
    10. Rated frequency: 50 Hz.
    11. Number of phase / connection: 3 / wye.
    12. Short circuit ratio (SCR): 0.53.
    13. Excitation: Static bus fed EX2100.
    14. Terminal enclosure: On top.
    15. Seal oil system: Scavenging design.
  10. Heat Recovery Steam Generator Details
    1. Make: CMI EPTI, USA.
    2. Type: Horizontal, natural circulation, triple-pressure.
    3. HP max. allowable working pressure: 149.8 kg/cm2.
    4. HP heating surface area: 153446 m2.
    5. HP max steaming capacity: 292500 kg/h.
    6. Reheater max. allowable working pressure: 32.8 kg/cm2.
    7. Reheater heating surface area: 21122 m2.
    8. Reheater max steaming capacity: 326500 kg/h.
    9. IP max. allowable working pressure: 38.2 kg/cm2.
    10. IP heating surface area: 33444 m2.
    11. IP max steaming capacity: 50000 kg/h.
    12. IP is ola table economizer max. allowable working pressure: 76.6 kg/cm2.
    13. IP is ola table economizer heating surface area: 153446 m2.
    14. IP is ola table economizer max steaming capacity: 7853 kg/h.
    15. LP max. allowable working pressure: 10.2 kg/cm2.
    16. LP heating surface area: 38609 m2.
    17. LP max steaming capacity: 38700 kg/h.
    18. LP is ola table economizer max. allowable working pressure: 43.2 kg/cm2.
    19. LP is ola table economizer heating surface area: 153446 m2.
    20. LP is ola table economizer max steaming capacity: 82580 kg/h.
  11. HP/IP Boiler Feed Pump and Motor Details
    1. Make: Torishima.
    2. Type and size: MHB 5/11.
    3. Speed: Variable speed (nominal 2979 RPM).
    4. Capacity: 352.9 m3/h.
    5. Design pressure (bar a): Extraction: 88.4; discharge: 247.6.
    6. Hydraulic balancing: Piston.
    7. Casing type / mount: Diffuser / centerline.
    8. External casing: Barrel.
    9. Coupling: Voith.
    10. Motor make: TECO Taiwan.
    11. Motor type: AEZW, 6.6kV, 50Hz, 3 ph.
    12. Motor method of starting: DOL.
    13. Motor frame size: 450E.
    14. Motor driver: 2700 kW.
    15. Motor degree of protection of enclosure: IP55.
    16. Motor stator: Wye.
  12. Condenser Extraction Pump and Motor Details
    1. Make: Torishima.
    2. Type and size: MMTV 250/5.
    3. Total head: 295.6 m.
    4. Speed: 1485 RPM.
    5. Capacity: 949.3 m3/h.
    6. Motor make: TECO Taiwan.
    7. Motor type: AEHC, 6.6kV, 50Hz, 3 ph.
    8. Motor method of starting: DOL.
    9. Motor frame size: 500 C.
    10. Motor driver: 1060 kW.
    11. Motor degree of protection of enclosure: IP55.
    12. Motor stator: Wye.
  13. CW Pump and Motor Details
    1. Make: WPIL.
    2. Type: Mixed flow non pull out.
    3. Model: VT 49-72.
    4. Total head: 24 MWC.