Generators: GT-GE GT 285 MVA GTG H2 cooled; ST-Alstom ST 190 MVA STG air cooled.
Supplementary firing supplied by CMI, approximately 20 MW, in-line type with BMS.
Power transformer for GTG: CGL 290 MVA.
Power transformer for STG: CGL 190 MVA.
Unit auxiliary transformer: Voltamp 20 MVA.
Emergency diesel generator: Cummins 1.01 MVA.
Circulating water pump: WPIL 18,000 m³/hr.
Condensate extraction pump: Sulzer 430 m³/hr.
Condition And Service History
Used, stopped, maintained in excellent condition.
LTSA with GE available.
Year of commissioning: 2006.
Year of shut down and preservation: 2016.
Total fired hours since new: 36,736 hours.
Inspection can be arranged at short notice.
Plant Performance And Site Conditions
Plant capacity: 388.5 MW at site condition with GT evaporative cooling, duct firing and fuel gas heating on.
Site conditions: DBT 29.2°C, RH 71%, atm. pressure 1010.7 mbar, elevation 24.5 m above MSL.
Plant heat rate: 1730 kcal/kWh (on HHV).
Auxiliary power consumption for plant: 10.450 MWh (2.69%).
Guaranteed emission limits: NOx 35 ppmv and CO 15 ppmv at 15% O₂.
Plant O&M as per OEM CSA (LTMA and LTAPSA) by GE for gas turbine and generator.
Power evacuation through 2 quad moose feeders from 400 kV switch yard.
Supplementary duct firing: 27.3 MW (47.3 M kcal/hr).
Water consumption: 13,392 m³/day.
Plant start up time: cold start up 260 min, warm start up 120 min, hot start up 90 min.
Fuel: natural gas with HHV 9832 kcal/m³ at 35 bar, 15°C.
Plant area: 26 acres (built up area).
Gas Turbine Specifications
Make: GE 9351 FA with DLN 2.0+.
Capacity: 233 MW (at site conditions).
Fuel: natural gas.
Starting means: load commutated inverter (LCI).
Air filtration: self-cleaning.
Inlet air cooling: evaporative cooler.
Compressor cleaning exhaust system: on-line and off-line water wash, exhaust diffuser with expansion joint for axial exit.
Emissions control: dry low NOx 2.0+.
Heavy duty 9FA gas turbines from the experienced F class fleet with over 25 million hours of operation.
Features: enhanced 24K hardware for increased reliability and availability; Mark VI control system controls the gas turbine using real-time physics based modeling, increasing overall performance, operability, and reliability.
Gas Turbine Generator Specifications
Rating: 285 MVA hydrogen cooled.
Frequency: 50 Hz.
Cooling: hydrogen.
Power factor (PF): 0.80 lagging, capability to 0.95 leading.
Terminal voltage: 15.75 kV.
Generator excitation: digital static bus fed.
Steam Turbine And Generator Specifications
Brand: Alstom ST-F15.
Capacity: 156.15 MW.
Features: 2 casing, condensing steam turbine; sliding pressure operation; triple pressure single reheat; manufactured by Alstom Germany; 100% bypass capability for HRH/LP.
Main steam parameters: HP steam 324 t/hr at 127 bar, 568°C; IP steam 361 t/hr at 26 bar, 568°C; LP steam 32 t/hr at 5 bar, 320°C.
Steam turbine generator rating: 183.7 MVA.
Frequency: 50 Hz.
Power factor (PF): 0.85 lagging.
Terminal voltage: 15.75 kV.
Cooling: air cooled.
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