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Siemens, V94.2 (SGT5-2000E), 1995, Gas Turbine Generator Units, 138.7 MW, 50 Hz, Natural Gas, 2 Units

Description

  1. Overview

    1. 2 x Siemens V94.2 (SGT5-2000E class) gas turbine generator units, units GT11 and GT12, used

    2. Simple cycle, natural gas fired, 50 Hz

    3. Both units commissioned on 1 November 1995

    4. Each unit complete with Siemens TLR1 108/36 generator, static excitation, static frequency converter start-up, SPPA-T3000 controls, unit transformers and main auxiliaries

    5. Operating history and overhaul records available

  2. Gas Turbine

    1. Configuration: single-shaft, single-casing, axial exhaust

    2. Compressor: 16-stage axial, variable inlet guide vanes

    3. Combustion: 2 side-mounted silo combustors, 16 gas burners

    4. Turbine: 4-stage

    5. Speed: 3,000 rpm

    6. Fuel: natural gas

  3. Performance Per Unit (ISO, Simple Cycle)

    1. Output at generator terminals: 138.7 MW base load / 145.7 MW peak load

    2. Efficiency: 32.5% base / 32.7% peak

    3. Turbine inlet temperature (ISO 2314): 1,060 °C (1,940 °F) base / 1,090 °C (1,994 °F) peak

    4. Compressor pressure ratio: 10.5 base / 10.6 peak

    5. Exhaust mass flow: 487 kg/s (1,074 lb/s) base / 488 kg/s (1,076 lb/s) peak

    6. Exhaust temperature: 533 °C (991 °F) base / 575 °C (1,067 °F) peak

    7. Combined output of both units: approx. 277 MW base

  4. Generator

    1. Model: Siemens TLR1 108/36

    2. Type: cylindrical rotor, 2-pole, open air cooled

    3. Apparent output: 173.5 MVA

    4. Active power: 138.8 MW

    5. Rated voltage: 10.5 kV ± 525 V

    6. Rated current: 9,540 A

    7. Frequency / power factor: 50 Hz / 0.8

    8. Stator connection: star (Y)

    9. Rated excitation: 982 A / 433 V

  5. Electrical And Control Systems

    1. Static excitation system and static frequency converter for start-up (start-up power at least 2,900 kW / 3,720 kVA)

    2. Control system: Siemens SPPA-T3000 with SIMATIC S7-400 and ET200M I/O

    3. Fault-tolerant servers, client workstations, UPS units and GPS time servers

    4. Unit auxiliary transformer: 3,150 kVA, 10.5 / 6.6 kV

    5. LV transformer: 630 kVA, 6,600 / 410 V

    6. Excitation transformer: 16,600 kVA, 6.6 kV / 780 V

    7. Starting transformer: 630 kVA, 6,600 / 410 V

  6. Auxiliary Systems

    1. Lubricating oil system with 11.5 m³ (3,038 US gal) main tank

    2. Jacking oil and DC emergency oil pumps

    3. Hydraulic oil system with 250 L (66 US gal) tank

    4. Clean water tank 500 L (132 US gal) and ignition gas buffer tank

    5. Air intake and axial exhaust connections

  7. Unit GT11

    1. Total starts: 3,481

    2. Equivalent operating hours: 152,455 EOH

    3. March 2018: third major (life-extension) overhaul; new inner casing, mixing chambers and turbine blades installed; turbine rotor inspected and maintained

    4. February 2024: fourth major overhaul; turbine blades and other critical components replaced; generator rotor returned to the manufacturer for repair

  8. Unit GT12

    1. Total starts: 4,818

    2. Equivalent operating hours: 148,293 EOH

    3. December 2019: third major (life-extension) overhaul; inner casing repaired; mixing chambers, turbine blades and other hot-section components replaced; turbine rotor inspected and maintained

  9. Availability

    1. Subject to prior sale

    2. Dismantling, preservation, packing, transport, installation and commissioning not included