|
The main function of the Kruonis Pumped Storage Plant (the KPSP) is the balancing of electricity generation and consumption as well as the prevention of accidents and their liquidation in the power system.
The main purpose of the Kruonis Pumped Storage Plant is to provide a spinning reserve of the power system, to regulate the load curve of the power system 24 hours a day.
To liquidate the capacity deficit in the event of the disconnection of the Ignalina Nuclear Power Plant, the Kruonis Pumped Storage Plant generators are automatically launched into operation.
The KPSP uses hydro-resources of artificial water pools existing at different geographical levels.
The electricity from this power plant is supplied to 330 kV electricity networks.
During a surplus of electricity generation output, the KPSP operates at pump mode and uses the surplus electricity to pump water from the lower pool to the upper pool.
During an electricity output deficit, the Kruonis PSP operates as a regular hydro power plant, letting water flow from the upper pool to the lower pool and in this way generating additional electricity.
Basic technical data
- Designed capacity of the pumped storage plant: 1 600 MW (8 units, 200 MW each)
- Installed capacity of the pumped storage plant: 900 MW (4 units, 225 MW each)
Turbine–pump
- Type - Radial Axis
- Runner diameter 6,3 m
- Capacity at turbine mode 205 MW
- Capacity at pump mode 217 MW
- Revolutions 150 aps./min.
- Rated discharge at turbine mode 226 m³/s
- Rated discharge at pump mode 189 m³/s
- Nominal pressure 100 m
Engine–generator
- Type - Synchronic vertical
- Capacity 236 MW
- Generator voltage 15, 75 kV
- Weight 1120 t
Reverse channel
- Width of bottom 189 m
- Width of water surface 250 m
- Depth 10 m
Pipelines
- Length 840 m
- Internal diameter 7,5 m
- External diameter 8,4 m
- Number of poles 2800, ( diam. 1 m)
Upper pool
- Area 306 ha
- Dam length 6,3 km
- Perimeter of pool 6,8 km
- Water level:
- maximum - 153,5 m alt.
- minimum - 140, 0 m alt.
- Bottom 138 m alt.
- Total pool volume 48 mln. m³
- Payload pool volume 41 mln. m³
Lower pool
- Length 127 m
- Width 70 m
- Height 50 m
Key dates
- 1974 03 19 Approval to start engineering works of the Kruonis PSP.
- 1978 04 04 Approval of the technical design of the Kruonis PSP. Beginning of construction.
- 1978 09 02 First cubic meter of soil dug at the construction site.
- 1981 10 01 One millionth cubic meter of soil dug.
- 1984 04 21 Construction of the foundation for the Kruonis PSP started, first cubic meter of concrete laid.
- 1984 06 30 Wastewater treatment facilities put into operation.
- 1988-1990 Active movement of the Greens, resulting in huge financial loss and delaying KPSP commissioning.
- 1991 04 26 Installation of the first unit is completed.
- 1991 11 14 Reverse canal is flooded.
- 1991 12 12 Construction of the Kruonis PSP continued by Government Resolution No.98 (capacity – 1 600 thousand kW).
- 1992 02 18 First unit put into operation.
- 1992 07 14 Upper pool flooded.
Key dates of KPSP construction
- 1992 08 05 Second unit put into operation.
- 1992 09 29 New Lithuanian enterprise registered – Kruonio hidroakumuliacinė elektrinė.
- 1994 08 03 Third unit put into operation.
- 1998 06 30 Fourth unit put into operation.
- 1992-1999 Produced 3 billion KWh of peak electricity.
|
