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GE, Alstom, 2006, 400 MW CCGT Power Plant, 388.5 MW Site Capacity, Natural Gas

GE, Alstom, 2006, 400 MW CCGT Power Plant, 388.5 MW Site Capacity, Natural Gas

Description

  1. Overview
    1. Low hours pre-owned 400 MW CCGT power plant in excellent (as new) condition, fully erected and preserved.
    2. Ready for relocation/export with OEM support.
    3. 100% owned by an independent power generation company, depth free.
    4. Natural gas-fired combined cycle power plant with a site gross capacity of 388 MW.
    5. Gas turbine supplied by G.E. and steam turbine supplied by Alstom, Germany.
    6. COD – 16th September 2006.
    7. FFH clocked – 36,736 hours.
    8. Long term assured parts supply agreement and a long-term maintenance contract with GE for maintenance of the gas turbine.
    9. Transmission line connected to a 400 kV grid.
    10. Water supply from a river.
  2. Operational Features
    1. Plant capacity: ISO 410 MW (388.5 MW at site conditions) with GT evaporative cooling, duct firing and fuel gas heating on.
    2. Site conditions: DBT – 29.2 °C, RH – 71%, atm. pressure – 1010.7 mbar, elevation – 24.5 m above MSL.
    3. Plant heat rate: 1730 kcal/kWh (on HHV).
    4. Auxiliary power consumption for plant: 10.450 MWh (2.69%).
    5. Guaranteed emission limits: NOx – 35 ppmv and CO – 15 ppmv @ 15% O2.
    6. Plant O&M by professional company; LTMA and LTAPSA by GE licensor for GT and generator.
    7. Power evacuation through 2 quad moose feeders from 400 kV switch yard.
    8. Supplementary duct firing: 27.3 MW (47.3 M kcal/hr).
    9. Water consumption: 13,392 m³/day.
    10. Plant start up time: cold start up – 260 min, warm start up – 120 min, hot start up – 90 min.
    11. Fuel: natural gas with HHV – 9832 kcal/m³ at 35 bar, 15 °C.
    12. Plant area: 26 acres (built up area).
  3. Major Equipment
    1. Gas turbine: GE 9351 FA, site rating 232.54 MW, indoor installation.
    2. HRSG: CMI, India, HP/IP/LP steam generation 326/36/29 tph, pressure 127/27/4 bar, temperature 568/329/258 °C, vertical, triple pressure, reheat, supplementary firing.
    3. Steam turbine: Alstom ST-F15, site rating 156 MW, reheat, single flow, condensing type.
    4. Generators: GT – GE 285 MVA, H2 cooled; ST – Alstom 190 MVA, air cooled.
    5. Supplementary firing: supplied by CMI, approx. 20 MW, in-line type with BMS.
    6. Power transformer for GTG: CGL, 290 MVA.
    7. Power transformer for STG: CGL, 190 MVA.
    8. Unit auxiliary transformer: Voltamp, 20 MVA.
    9. EDG: Cummins, 1.01 MVA.
    10. Circulating water pump: WPIL, 18,000 m³/hr.
    11. Condensate extraction pump: Sulzer, 430 m³/hr.
  4. Gas Turbine Features
    1. GE PG 9351 FA with DLN2.0+.
    2. Heavy duty 9FA gas turbines from the experienced F class fleet with over 25 million hours of operation.
    3. Enhanced 24K hardware for increased reliability and availability.
    4. Mark VI control system controls the gas turbine using real-time physics based modeling, increasing the overall performance, operability, and reliability of the gas turbine.
    5. Capacity: 233 MW (at site conditions).
    6. Fuel: natural gas.
    7. Starting means: load commutated inverter (LCI).
    8. Air filtration: self-cleaning.
    9. Inlet air cooling: evaporative cooler.
    10. Compressor cleaning: on-line and off-line water wash.
    11. Exhaust system: exhaust diffuser with expansion joint for axial exit.
    12. Emissions control: dry low NOx 2.0+.
  5. Gas Turbine Generator
    1. Rating: 285 MVA hydrogen cooled.
    2. Frequency: 50 Hz.
    3. Cooling: hydrogen.
    4. Power factor: 0.80 lagging, capability to 0.95 leading.
    5. Terminal voltage: 15.75 kV.
    6. Generator excitation: digital static bus fed.
  6. Steam Turbine Features
    1. Alstom – steam turbine ST-F15 and generator.
    2. Turbine: 2 casing, condensing steam turbine.
    3. Sliding pressure operation.
    4. Triple pressure single reheat.
    5. Manufactured by Alstom Germany.
    6. 100% bypass capability for HRH/LP.
    7. Make: Alstom.
    8. Capacity: 156.15 MW.
    9. Main steam parameters: HP steam – 324 t/hr @ 127 bar, 568 °C; IP steam – 361 t/hr @ 26 bar, 568 °C; LP steam – 32 t/hr @ 5 bar, 320 °C.
  7. Steam Turbine Generator
    1. Rating: 183.7 MVA.
    2. Frequency: 50 Hz.
    3. Power factor: 0.85 lagging.
    4. Terminal voltage: 15.75 kV.
    5. Cooling: air cooled.
  8. Power Transformer GTG – CGL
    1. Rating: 3 phase, 290 MVA, 0.85 PF lag.
    2. Voltage: 15.75/420 kV.
    3. Cooling: ONAN/ONAF/OFAF.
    4. Frequency: 50 Hz.
  9. Unit Auxiliary Transformer – Voltamp
    1. Rating: 3 phase, 20 MVA.
    2. Voltage: 15.75/6.9 kV.
    3. Cooling: ONAN/ONAF.
    4. Frequency: 50 Hz.