Pratt&Whitney 2 JT 3C-6

Listing description

24 MW PPD3 is equipped with two gas generators and two turbines in double end configuration driving one common generator from both ends. In the 24 MW PPD3 a free wheel SSS coupling between each
power turbine and the common generator enables flexible operation with one or two gas turbines for 12 MW or 24 MW power output.
The scope of supply includes complete gas turbine blocks including all main components and auxiliary equipment, buildings and enclosures, spare parts and relevant documentation including operation and maintenance manuals. The supply boundaries are the fuel booster pump inlet and the terminals on the generator breaker connection to the 10 kV switchgear. Boundaries of other connections to equipment not forming part of the unit are at the terminal points in the unit.
1
24 MW PPD3 GAS TURBINE
The plant was built in 1972 - 1973 to cover the peak electricity demand of the company. The plant was used earlier rather frequently for grid balancing duties and test runs, but after the deregulation only regular test runs have been performed. The plant is operative, in good condition and has been regularly maintained.
1.1
Operating data
The plant was commissioned in 1973 and the unit has been utilized for peak load operation
Operating hours and starts:
Engine 1:
3276 h, 976 starts
Engine 2:
3616 h, 966 starts
1.2
Technical Data
Gas Turbines : Pratt&Whitney JT 3C-6, two off
Power Turbines: ABB Stal-Laval 88-3, 3000 rpm, two off
Generator:
ASEA GTP 80/160
30 MVA, cos ? = 0.85, 50 Hz,

10.5 kV, one off
Performance
ISO: peak load 24 MW

base load 20 MW

heat rate 13 600 Btu/kWh

efficiency 25 %
Fuel:
jet fuel (kerosene)

1.3
Scope of Supply
- air intake system including filters and silencer
- fuel system including booster pump, filter, flow meter
- lube oil system
- governing oil system
- cooling system; air cooled
- starting system; air including compressor and receiver
- fire fighting system; CO2
- exhaust system including silencers and stacks with shutting flaps
- buildings and enclosures
- generator
- generator breaker
- start up transformer
- excitation transformer
- auxiliary transformer
- connecting bus bars with current and voltage transformers
- control system of type ABB Procontrol
- DC system 110 V lead acid batteries
- documentation
- spare parts: one spare jet engine P&W JT3C-6, set of combustion chambers, miscellaneous electrical and mechanical parts

This equipment is located in SE