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General Electric, PG9171E, 121MW, 50 Hz, Gas Turbine Generator Sets

Description

  1. Turbine Overview
    1. Turbine A: 83,371 hours
    2. Turbine B: 71,196 hours
    3. Turbine C: 83,249 hours
  2. Included Generators
    1. One Alstom generator 121.25 MVA, 15000 V, 3000 rpm, model T240-370, year of manufacture 2001
    2. One Hyundai 2001 120 MVA generator
  3. Generator Technical Details
    1. Type: 3 phases; T240-370
    2. Year of manufacture and serial numbers: 2001; 500659 for GT-1A, 500641 for GT-1B, 500650 for GT-1C
    3. Cooling: By air
    4. Output: 121.25 MVA
    5. Voltage: 15000 V
    6. Stator current: 4667 A
    7. Power factor: 0.8
    8. Speed and frequency: 3000 rpm and 50 Hz
    9. Class of insulation: F
    10. Duty: Continuous
    11. Protection: IP54
    12. Exciter: Rotating diode; rated output 304 kW, rated volts 163 V
  4. Generator Step-Up Transformer Technical Details
    1. Type: 3 phase generator transformer with OLTC; TMPY (90000) / 132
    2. Make and year of manufacture: Hyundai, 2001
    3. Cooling system: ONAN / ONAF
    4. Rated power (ONAN / ONAF): 90 / 120 MVA
    5. Rated voltage HV / LV: 132 / 15 kV
    6. Rated currents HV / LV – ONAN: 393.65 / 3464.1 A
    7. Rated currents HV / LV – ONAF: 524.86 / 4618.80 A
    8. Vector group: YNd11
    9. Tap range HV: +8 / -10 x 1.25%
    10. Rated frequency: 50 Hz
    11. Degree of protection: IP 55
    12. Standard: IEC 60076
    13. Temperature rise of windings / oil: 55 / 50 K
    14. Weights: Cover, core and coil 87600 kg; tank 9600 kg; oil 37000 lt; total 149600 kg
  5. Gas Pressure Reduction Terminal Technical Details
    1. Inlet ESD skid
    2. Inlet filter separator skids A and B
    3. Metering skid
    4. Water bath heater skids A and B
    5. Pressure reduction skid
    6. All skids have 2 x 100% capacity trains with changeover logic
    7. Interconnection piping from ESD skid to pressure reduction skids is 10 inch, reducing to 8 inch at each skid inlet
    8. Final fuel gas pipe leaving pressure reduction skid to gas turbines is 16 inch
    9. Process parameters: inlet pressure 7700 / 6400 kPag (max/min), outlet pressure 2700 kPag
    10. Inlet temperature 50 / 20 deg C (summer/winter), outlet temperature 52 deg C
    11. Mass flow: 2316 t/day
    12. Volume flow: 2880 x 1000 m3(st)/d (max)
    13. Density: 76.5 / 52.5 kg/m3 (max/min) at inlet, 20.9 kg/m3 at outlet
  6. Firewater Tank and Pumps Technical Details
    1. One fire water storage tank of 848 m3 capacity
    2. Two fire water pumps (one AC motor driven and one DG driven)
    3. One jockey pump
    4. Fire pump controllers
    5. Fire water storage tank: nominal diameter 12.0 m, nominal height 7.5 m, steel circular cone roof, design standard API 650 9th edition, design pressure atmospheric, design liquid level 7.2 m, max operating temperature 60 deg C, 4 shell courses, material BS 4360 GR 43 A, weight 30 tons
    6. Fire water pumps: multistage, split case, foot mounted, horizontal centrifugal pump
    7. Flow: 1135.5 m3/hr (5000 USGPM)
    8. Head: 90 m
    9. Seal: Mechanical single cartridge
    10. Coupling: Flexible
    11. Casing: Aluminium bronze
    12. Impeller: 316L stainless steel
    13. Drive: Electric 300 kW, 4P, 6.6 kV, 50 Hz; engine Caterpillar model 3.406
  7. Black Start Diesel Generator Technical Details
    1. 3200 kWe Wartsila model 18V200 engine paired with ABB710MR04 / 4 pole, 6.6 kV generator
    2. Total running hours: 978.4 hours
    3. Air inlet dust louver and inertial separator system
    4. Sound proof ventilation air outlet
    5. Starting air unit with diesel engine
    6. Exhaust silencer
    7. Water / fuel-oil heat exchanger
    8. Radiator
    9. Diesel day tank
    10. Neutral grounding register
    11. Genset control panels
    12. Battery charger 125 VDC
    13. Engine type: Diesel engine, single stage supercharging, aftercooler
    14. Number of cycles: 4
    15. Number of cylinders and stroke: 18; 200 x 240
    16. Total displacement: 136 L
    17. Compression ratio: 14.5:1
    18. Output at 1500 rpm: 180 kW/cyl
    19. Vee angle: 60 deg
    20. Number of inlet and exhaust valves per cylinder: 2
    21. Number of turbochargers: 2
    22. Rotation: clockwise