General Electric Model PG7121EA Gas Turbine

Transcription

1 General Electric Model PG7121EA Gas Turbine Estimated Performance - Configuration: DLN Combustor Compressor Inlet Conditions 59 F (15 C), 60% Relative Humidity Atmospheric Pressure 14.7 psia (1.013 bar) Fuel: Natural Gas Distillate Design Output kw Design Heat Rate (LHV) Btu/kWh (kj/kwh) (11050) (11150) Design Heat Cons (LHV) Btu/h (kj/h)x10^ (932.5) (924.2) Design Exhaust Flow lb/h (kg/h)x10^ (1071) 2368 (1074) Exhaust Temperature deg. F (deg. C) 998 (536.7) 999 (537.2) Load Base Base Notes: 1. Altitude correction on curve 416HA662 Rev A. 2. Ambient temperature correction on curve 522HA283 Rev Effect of modulating IGV's on exhaust temperature and flow on curve 522HA284 Rev Humidity effects on curve 498HA697 Rev. B - all performance calculated with a constant specific humidtiy of.0064 or less as not to exceed 100% relative humidity. 5. Plant Performance is measured at the generator terminals and includes allowances for the effects of inlet bleed heating, exitation power, shaft driven auxiliaries, and 3.5 in H2O (7.29 mbar) inlet and 5.5 in H2O (13.70 mbar) exhaust pressure drops and a DLN Combustor. 6. Additional inlet and exhaust pressure loss effects: % Effect on Effect on Output Heat Rate Exhaust Temp. 4 in Water (10.0 mbar) inlet F (1.0C) 4 in Water (10.0 mbar) exhaust F (1.0C) Deg F Heat Consumption - Percent Design Deg F 59 Deg F I. Levine 8/17/98 Generator Output - Percent Design 522HA282 Rev - 2

2 General Electric Model PG7121EA Gas Turbine Estimated Performance - Configuration: DLN Combustor Compressor Inlet Conditions 59 F (15 C), 60% Relative Humidity Atmospheric Pressure 14.7 psia (1.013 bar) Fuel: Natural Gas Design Output kw Design Heat Rate (LHV) Btu/kWh (kj/kwh) ( ) Design Heat Cons (LHV) Btu/h (kj/h)x10^ (1006.2) Design Exhaust Flow lb/h (kg/h)x10^ (1071.4) Exhaust Temperature deg. F (deg. C) 1063 (572.8) Load Peak Notes: 1. Altitude correction on curve 416HA662 Rev A. 2. Ambient temperature correction on curve 522HA709 Rev Base Load performance on curve 522HA282 Rev Humidity effects on curve 498HA697 Rev. B - all performance calculated with a constant specific humidtiy of.0064 or less as not to exceed 100% relative humidity. 5. Plant Performance is measured at the generator terminals and includes allowances for the effects of inlet bleed heating, exitation power, shaft driven auxiliaries, and 3.5 in H2O (7.29 mbar) inlet and 5.5 in H2O (13.70 mbar) exhaust pressure drops and a DLN Combustor. 6. Additional inlet and exhaust pressure loss effects: % Effect on Effect on Output Heat Rate Exhaust Temp. 4 in Water (10.0 mbar) inlet F (1.0C) 4 in Water (10.0 mbar) exhaust F (1.0C) Deg F Heat Consumption - Percent Design Deg F 59 Deg F I. Levine 8/21/98 Generator Output - Percent Design 522HA710 Rev - 1

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5 GENERAL ELECTRIC MODEL PG7121EA GAS TURBINE Effect of Inlet Guide Vane on Exhaust Flow and Temperature As a Function of Output and Compressor Inlet Temperature Fuel: Natural Gas Design Values on Curve 522HA282 Rev Exhaust Temperature (F) Deg F 30 Deg F 59 Deg F 90 Deg F 120 Deg F Exhaust Flow - Percent Design Deg F 90 Deg F 59 Deg F 30 Deg F 0 Deg F I. Levine 8/17/98 Generator Output - Percent 522HA284 Rev - 2

6 GENERAL ELECTRIC GAS TURBINE ALTITUDE CORRECTION CURVE ALTITUDE VS ATMOSPHERIC PRESSURE AND ALTITUDE VS CORRECTION FACTOR FOR GASTURBINE OUTPUT, FUEL CONSUMPTION, AND EXHAUST FLOW 15.5 NOTES: 1. Exhaust Temperature, Heat Rate, and Thermal Efficiency are not affected by altitude. 2. Correction Factor = P(atm)/ Correction Factor Atmospheric Pressure (PSIA) Correction Factor 11.5 Atmospheric Pressure Altitude (Feet) 0.50 Gajipara H. N. 6/30/99 416HA662 Rev-B

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8 ESTIMATED SATURATION AND SYNCHRONOUS IMPEDANCE CURVES 2 Pole 3600 RPM kva Volts PF SCR 270 Volts Excitation 15 Deg. C Cold Gas 886 Ft. Altitude No load field current = 295 AMPS Synchronous impedance field current = 551 AMPS Full load field current = 801 AMPS Rated armature voltage = VOLTS Rated armature current = 4188 AMPS PER UNIT ARMATURE VOLTAGE AND CURRENT A B C D A = B = C = D = E = F = E F Air Gap Line No load saturation Synchronous impedance Saturation at rated armature current pf Saturation at rated armature current - rated pf Saturation at rated armature current - 0 pf(lag) 91638G1-1a EXCITER FIELD CURRENT (Amps) GENERATOR FIELD CURRENT (Amps)

9 ESTIMATED REACTIVE CAPABILITY CURVES 2 Pole 3600 RPM kva Volts PF SCR 270 Volts Excitation 15 Deg. C Cold Gas 886 Ft. Altitude 120 Base Capability -32 C Cold Gas LEADING MEGAVARS LAGGING C Cold Gas 42 C Cold Gas G1-2a MEGAWATTS

10 1.40 ESTIMATED VEE CURVES 2 Pole 3600 RPM kva Volts PF SCR 270 Volts Excitation 15 Deg. C Cold Gas 886 Ft. Altitude Base Capability -32 C Cold Gas kw C Cold Gas PER UNIT KILOVOLT-AMPERES kw kw 42 C Cold Gas Leading Lagging 91638G1-3a EXCITER FIELD CURRENT (Amps) GENERATOR FIELD CURRENT (Amps)

11 120 GENERATOR OUTPUT AS A FUNCTION OF COLD GAS TEMPERATURE 2 Pole 3600 RPM kva Volts PF SCR 270 Volts Excitation 15 Deg. C Cold Gas 886 Ft. Altitude Output (Megawatts) Base Capability (0.85 PF) G1-7a Generator Cold Gas Temperature (Deg. C)