Description
Overview
2 x Siemens V94.2 (SGT5-2000E class) gas turbine generator units, units GT11 and GT12, used
Simple cycle, natural gas fired, 50 Hz
Both units commissioned on 1 November 1995
Each unit complete with Siemens TLR1 108/36 generator, static excitation, static frequency converter start-up, SPPA-T3000 controls, unit transformers and main auxiliaries
Operating history and overhaul records available
Gas Turbine
Configuration: single-shaft, single-casing, axial exhaust
Compressor: 16-stage axial, variable inlet guide vanes
Combustion: 2 side-mounted silo combustors, 16 gas burners
Turbine: 4-stage
Speed: 3,000 rpm
Fuel: natural gas
Performance Per Unit (ISO, Simple Cycle)
Output at generator terminals: 138.7 MW base load / 145.7 MW peak load
Efficiency: 32.5% base / 32.7% peak
Turbine inlet temperature (ISO 2314): 1,060 °C (1,940 °F) base / 1,090 °C (1,994 °F) peak
Compressor pressure ratio: 10.5 base / 10.6 peak
Exhaust mass flow: 487 kg/s (1,074 lb/s) base / 488 kg/s (1,076 lb/s) peak
Exhaust temperature: 533 °C (991 °F) base / 575 °C (1,067 °F) peak
Combined output of both units: approx. 277 MW base
Generator
Model: Siemens TLR1 108/36
Type: cylindrical rotor, 2-pole, open air cooled
Apparent output: 173.5 MVA
Active power: 138.8 MW
Rated voltage: 10.5 kV ± 525 V
Rated current: 9,540 A
Frequency / power factor: 50 Hz / 0.8
Stator connection: star (Y)
Rated excitation: 982 A / 433 V
Electrical And Control Systems
Static excitation system and static frequency converter for start-up (start-up power at least 2,900 kW / 3,720 kVA)
Control system: Siemens SPPA-T3000 with SIMATIC S7-400 and ET200M I/O
Fault-tolerant servers, client workstations, UPS units and GPS time servers
Unit auxiliary transformer: 3,150 kVA, 10.5 / 6.6 kV
LV transformer: 630 kVA, 6,600 / 410 V
Excitation transformer: 16,600 kVA, 6.6 kV / 780 V
Starting transformer: 630 kVA, 6,600 / 410 V
Auxiliary Systems
Lubricating oil system with 11.5 m³ (3,038 US gal) main tank
Jacking oil and DC emergency oil pumps
Hydraulic oil system with 250 L (66 US gal) tank
Clean water tank 500 L (132 US gal) and ignition gas buffer tank
Air intake and axial exhaust connections
Unit GT11
Total starts: 3,481
Equivalent operating hours: 152,455 EOH
March 2018: third major (life-extension) overhaul; new inner casing, mixing chambers and turbine blades installed; turbine rotor inspected and maintained
February 2024: fourth major overhaul; turbine blades and other critical components replaced; generator rotor returned to the manufacturer for repair
Unit GT12
Total starts: 4,818
Equivalent operating hours: 148,293 EOH
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
Availability
Subject to prior sale
Dismantling, preservation, packing, transport, installation and commissioning not included
