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GAS TURBINE GENERATORS - 1. 4 X 160 MW, GE (GENERALELECTRIC) FRAME 7 FA

1. 4 X 160 MW, GE (GENERALELECTRIC) Frame 7 FA GAS TURBINE GENERATORS.

(3 Unit)
Year of Manufacture: 2002, Indoor Installation, 211 MVA, 60 Hz Generator, 18 kV output, 0.85 pf, Natural Gas Only, DLN 2.6 Combustion System, 9 ppm emissions, Mark V Control System, EX2000 with PSS, Two LCI’s, Provisions for inlet fogger, Electrical and electronics, equipment shipped loose, Seismic: OBC 2002 - Group II, Wind: OBC 2002 - 90 mph, Snow: OBC 2002 - 20 psf ,

(1 Unit)
Year of Manufacture: 2002, Outdoor Installation, 211 MVA, 60 Hz Generator, 18 kV output, 0.85 pf, Natural Gas Only, DLN 2.6 Combustion System, 9 ppm emissions, Mark VI Control System, EX2100 with PSS, Single LCI, PEECC provided, Seismic: CBC-1998 Zone 4, Wind: CBC-1998, 80 mph, Snow: Not listed

2. 1 X 245 MW ,GE ( GENERAL ELECTRIC ) STEAM TURBINE GENERATOR .

245 MW GE - D-11 Steam Turbine, Year of Manufacture: 2002 , Outside Installation, 1900 psia steam inlet, 1050 degree F HP/RH steam inlet, D11S-33.5” LSB, 300 MVA, 60 Hz Generator, 18 kV output, 0.85 pf, Mark V Control System, EX2000 with PSS, Seismic: UBC-97 Seismic Zone 1, Wind: 90 mph, Snow: 10 psf

Ref : 12117

POWER PLANT, 330 MWEL LIGNITE-FIRED, LOW RUNNING HOURS

This power plant with one line 330 MWel started its commercial operation in 04/1983.
The plant design was for base load with a technical useful life without higher reinvestment of 200.000 hours. Recorded yearly operating hours were up to > 5.000 mainly in wintertime, due to available excess hydro power in summertime. Steam turbine is equipped with extraction for 120 °C / 60 °C district heating. Together with an additional flue gas heat exchanger at the boiler a total of 47,5 MWth can be supplied. Efficiency of power production is 38.5 %
Plant was shut down in 05/2006 based on a foreseeable run down of lignite on site.
Total operating hours were 84.289 with 411 starts after a gross production of 23.876.006 MWhel.
After shut down owner invested about 7.000 man hours in cleaning and preservation. Boiler is filled with water and preservation solvent, Generator and Turbine are permanently dried with hot air and are frequently turned.
Coal transport system with conveyor belts from open pit mine to the coal storage area was already dismantled.

Technical data

Boiler
Manufacturer European manufacturer
Thermal cycle type forced circulation, single pass design (SULZER type)
Max. hight above ground 100 m
Max. continuous rating 980 t/h
Max. short time Overload 1.029 t/h
Heating surface size 44.746 m²
Total piping length 383.000 m
Max. pressure rating 203 bar
Live steam conditions 184 bar, 535° C
Reheat steam 920 t/h
Reheat steam temperature 535° C
Min. Boiler load 55 % operational, 40 % theoretical
Fuel Lignite, size 0 - 30 mm
Average Heating value 10.500 kJ/kg (normal 9.210 – 12.560)
Average Water content 35 % (normal 30 – 40)
Sulphur content 0,7 % (normal 0,3 – 1,05)
Firing Tangential coal dust firing
Average fuel consumption 280 t/h
Ignition 6 HFO burners
Casing Membrane walls
Slag removal Wet
Flue gas quantity 1.100.000 Nm³/h dry
Flue gas temperature 150 °C
Boiler efficiency measured 90,7 %

Coal Mills
Manufacturer German manufacturer
Type Beater Wheel
Number of Mills 6 (one in stand-by)
Rated capacity 72 t/h each
Rpm 470 - 520
Wheel diameter 3.400 mm
Coal mill motors 1.300 kWel each, 6 kV

Auxiliary steam
Steamblock Type 3000
Steam parameters 26 t/h, 14 bar, 320°C.
Fuel HFO

Dust control
System Electric Precipitator

Denitrification
System Primary measures and Selective Catalytic Reduction
Year of commissioning / retrofitting 1988 / 1990
Additive for denitrification Ammoniumwater
Average consumption 500 kg/h

Desulphurisation
System Furnace limestone injection process and wet sorption
Year of commissioning / retrofitting 1983 / 1986
Additive for desulphurisation Limestone
Number of scrubbers 2
SO2 efficiency 90 – 95 %
Average Gypsum production 17,3 t/h
Flue gas temperature into stack 80°C

Main stack
Description Concrete stack, steel flue gas duct hanging from top
Inner diameter 5.500 mm
Wall thickness 8 mm (steel)
Height of stack 180 m
Stack base outside diameter 21,8 m (concrete)
Stack crest diameter 10,2 m (concrete)
Stack wall thickness 300 mm (concrete)

Steam turbine
Manufacturer German manufacturer
Casing 1 x HP, 1 x MP, 1 x LP double flow
Max. continuous rating 330 MW
Live steam conditions 177,5 bar, 532 OC
Reheat steam conditions 37,3 bar. 534 OC
2 Bleedings for District Heating 37,5 MWth
Condenser pressure 51 mbar
Cooling surface 13.100 m²

Feed pumps
System 3 x 50 % electric driven with constant rpm pre-pumps
and variable rpm main pumps via VOITH gear box.
Manufacturer of Pumps KSB
Manufacturer of feed pump motors ASEA
Rated power 6.200 kWe each, 6 kV

Cooling
Cooling water extraction River
Cooling method 99 m concrete natural draught cooling tower
Cooling water quantity total 25.000 m³/h
Cooling water demand 720 m³/h

Synchronous Generator
Manufacturer European brand
Generator capacity 375 MVA
Voltage 21 kV
Power factor 0.88
Speed 3 000 rpm

Step-Up Transformer
Manufacturer European brand
Rated power 360.000 kVA
Voltage 21 / 116 kV
Vector group YNd 11

Start Transformer
Rated power 40.000 kVA
Voltage 116 / 6,3 kV

Consumption Transformer
Rated power 40.000 kVA
Voltage 20 / 6,3 kV

Process Control System Details on demand

Auxiliaries
All auxiliaries for safe operation of the plant are available, including turbine and generator control, fuel system, cooling water system, deionisation plant, etc. and a remarkable lot of spare parts and crane are available.

Spare Parts
Available and stored in a separate building.

Documentation
Complete documentation, including civil engineering, operation manuals, maintenance reports, log books, etc. is available.

 Ref : 11224

2 X 150 MW OIL- FIRED- POWER- PLANT

Power plant built in the early 60’th as strategic reserve and moth- balled after few years of
Operation

Technical Data for the 150 MW type power plant

Boiler:
Manufacturer Svenska Maskinverken
Type Horizontal design, natural circulation
Fuel Diesel and WRD oil
Steam pressure 130 bar
Steam temperature 515 degree C
Steam capacity 480 tons/hour

Steam Turbine:
Manufacturer ABB Stal
Type: Durax, radial and axial turbine systems, 3000 rpm

Generator:
Manufacturer ASEA
Type 50 Hz, air-cooled
Voltage 10.5 kV

Main Transformer:
Manufacturer ASEA
Voltage 130 / 10,5 kV

Start-up Transformer:
Manufacturer ASEA
Voltage 130 / 6 kV

Auxiliary Transformers: Manufacturer ASEA
Voltage 6 / 0.5 kV

Steam Condenser:
Type Water-cooled, water flow 7 m3/sec.

Operating Data:
Operated hours 45 000 hours
Number of starts 600 starts
NOx emissions 50 mg/MJfuel with diesel
Efficiency 38 % net.
Year of commissioning: Plant B1 in 1960,
- Plant B2 in 1961,

Condition of the plant moth- balled, in very good condition

 Ref : 11225