PowerStation no 1 A-B 42.5 Mw
42.5 MW Gas Turbine
The gas turbine unit operates according to a comparatively
simple cycle.
Compression in (2) two steps with inter-cooling, combustion
in (2) combusting chambers and expansion in three (3)
steps.
The air first reaches the low pressure compressor and
finally to the two combustion chambers. In the combustion
chamber the fuel is supplied and gas with a temperature
of 700ْ C
is formed. This gas is used to operate the turbine-driven
compressors and then the turbine, witch via the coupling
operates the generator.
This plant is a light oil fuel-fired gas turbine power
plant. The plant are also able to operate on natural gas
or “washed” heavy fuel oil. The power plant
is complete and not in operation but professionally preserved
to retrain the status of the equipment. The turbine, pumps
and fans have been rotated once a month since the plant
was put in stand-by mode as a part of the Swedish electricity
capacity reserve. Se data below and description in Enclosure
2. The Buyer have to make all civil works. |
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Technical Data:
Manufacturer: |
ABB STAL-LAVAL |
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Turbine |
ABB STAL-LAVAL,
TYPE GT 120, Gas turbine. |
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Manufactured: |
1962 |
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Design data: |
42.5 MWe. 11kV |
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Type GT 120: |
LT r/m
3 250 |
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HT r/m 3 700 |
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KT r/m 3000 |
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Order no: |
9230.20 |
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Capacity: |
42 500
kW (at 760 mm Hg, -5ْ C
outdoor temp, +10C cooling water temp.)
35 000 kW ( at 740 mm Hg, +15ْ C
outdoor temp, +10 cooling water temp.) |
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Spec. heat |
3 175 kCal/kWh
at full load which means total |
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Consumption |
efficincy 27
% |
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Number of start-ups: |
435 times for
generation ad 425 for power correction |
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Hours of operation: |
6 410 hours
of active power generation and 26
438 hours for reactive power generation. |
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Fuel: |
Light fuel oil,
natural gas or treated “washed”
Heavy fuel oil. |
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Generator: |
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3 – 50Hz |
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Type GTA 1629 |
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No 494 1049 |
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Magn, 400V |
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11 000V |
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Connection Y |
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3000 r/m |
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2 bars (g) |
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0,035 bars (g) |
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55 000 KVA x 0,8 |
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50 000 KVA x 0,8 |
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11 000 V |
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11 000 V |
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2 890 A |
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2 625 A |
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Magn 380 A |
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Magn 380 A |
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0 bars (g) |
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44 000 KVA x 0,8 |
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11 000 V |
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2 310 A |
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Magn 380 A |
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Temperature |
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Classification: |
Rotor |
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B Stator B Norm |
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SEN22 |
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Manufactured |
1962 |
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The plant also include:
Lubrication system, hydrogen and carbonic acid system, fuel
system, ignition system, cooling water system:
Automatic oil control system and operating oil system, jointing
oil system, control air syatem, cleaning system, automatic control
system, automatic and hot water system.
NOTE: The gas turbine, taken into operation 1962, is designed
for production with heavy as well as light fuel oil.
From 1983 only light fuel oil have been used.
Miscellaneous:
Total number of gas turbine starts 435, Total number of
starts for power correcting 425, Total operating time – active
6 410, Total operating time – reactive 36 438,
Accelaration time for gas turbine operation (warm unith) 3 minutes,
Accelaration time for power correction operation (cold unith)
6 minutes, Full load 42MW 12 minutes. Operating Crew permanent
2-3- persons.
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