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GE, LM6000 PC, 1999, Combined Cycle Power Plant, 60 MW, 50 Hz

GE, LM6000 PC, 1999, Combined Cycle Power Plant, 60 MW, 50 Hz

Description

  1. Overview
    1. Running hours since new: 22,000 hrs.
    2. Frequency: 50 Hz.
    3. Plant was shut down in late 2016.
    4. Plant constructed on a land size of 25,000 m².
  2. Gas Turbine-Generator Unit
    1. Gas turbine type: LM 6000 PC Sprint.
    2. Number of units: 1.
    3. Nominal unit power (at ISO conditions): 49 MWm / 48.2 MWe.
    4. Exhaust gas flow rate: 134.5 kg/h.
    5. Exhaust gas temperature: 443.5 °C.
    6. Consumed thermal energy: 8,970 kJ/kWh.
    7. Compressor air compression ratio: 13.9.
    8. Turbine efficiency: 35.5%.
    9. Generator brand: Meidensha 1C6856RJ1.
    10. Generator installed power: 64,500 kVA.
    11. Generator output voltage: 11.50 kV.
    12. Generator frequency: 50 Hz.
    13. Generator revolutions: 3,000 revs/min.
    14. Gross electricity production: 420,000,000 kWh/year.
    15. Net electricity production: 405,000,000 kWh/year.
    16. Generator power factor: 0.800.
  3. Waste Heat Steam Boiler
    1. Steam is produced in the waste heat boiler with water pipes using exhaust gas from the gas turbine; process steam is fed to the steam turbine for electricity production.
    2. Boiler manufactured in Canada, brand IST, model OTSG; contains pipes that can operate without water.
    3. Type: Innovative Steam Technologies / Canada – waste heat boiler with single pass.
    4. Boiler exhaust gas inlet temperature: 443.5 °C.
    5. Boiler exhaust gas outlet temperature: 180 °C.
    6. Feed water temperature: 26 °C.
    7. Steam HP temperature: 430 °C.
    8. Steam HP pressure: 51 bar.
    9. Steam LP temperature: 230 °C.
    10. Steam LP pressure: 5.5 bar.
    11. Steam capacity HP: 43.5 ton/hour (55 bar).
    12. Steam capacity LP: 14 ton/hour (5.5 bar).
    13. Exhaust fumes discharged from boiler flue to atmosphere at temperature of 140 degrees.
  4. Steam Turbine-Generator Unit
    1. Steam turbine code: WT 7841.
    2. Steam turbine type: NKS 50/72/72.
    3. Operation steam pressure: 52 bar.
    4. Operation steam temperature: 430 degrees.
    5. Number of units: 1.
    6. Nominal unit power (at ISO conditions): 12.5 MWm / 12 MWe.
    7. Condenser model: HTC/N-1300-17.
    8. Vacuum at exit of steam turbine: around 0.13 bar (a).
    9. Generator brand: Nanyang.
    10. Generator type: QFW-12.4-2.
    11. Generator installed power: 12,400 kW.
    12. Generator output voltage: 11.50 kV.
    13. Generator frequency: 50 Hz.
    14. Generator revolutions: 3,000 revs/min.
    15. Gross electricity production: 110,000,000 kWh/year.
    16. Net electricity production: 100,000,000 kWh/year.
    17. Generator power factor: 0.85.
  5. Cooling Tower
    1. Used to cool water contained within the condenser of the steam turbine.
    2. Contains 3 units of cooling fans.
    3. Top up of water for the tower is provided from the raw water tank.
  6. Switching Station and Transformer Station
    1. Provides connection of cogeneration plant with 60 MW power rating to a distribution system.
    2. Contains 2 units of transformers, 1 unit of line feeder, 1 unit of coupling at 154 kV voltages at the energy transmission plant for the first phase.
    3. An area has been allocated within the land for 1 unit of line feeder and 1 unit of power transformer for future requirements.
  7. Water Treatment System
    1. Water used for production is obtained from the raw water tank.
    2. Raw water tank is vertical and cylindrical, manufactured from steel; water is conveyed to pre-treatment plant and service areas through pumps; also used to store firefighting water.
    3. Polymer solutions are injected into water from the raw water tank for effective filtration through multimedia filters.
    4. Particles are cleansed through multimedia filtration and cartridge filtration.
    5. Sodium bi-sulphite is dosed to eliminate free chlorine in water treated by multimedia filters.
    6. If water has high hardness or positive Langelier index, blockage of membranes may occur due to ion settling.
    7. Advanced treatment is performed to eliminate hardness and inhibit particles that could cause damage.
  8. Condition
    1. Running hours since new: 22,000 hrs.
    2. Plant was shut down in late 2016.
    1. Plant constructed on a land size of 25,000 m².