Kislaya Guba Tidal Power Station
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The tidal power plant Kislaja Guba is a tidal power plant in dam construction in the bay acids (Russian Кислая губа, Kislaja Guba ), a fjord on the Kola Peninsula in Russia north of Murmansk, which flows into the Barents Sea on the northern end.
Technology and history
The plant was an experimental project in their construction and therefore had a relatively small electric power of only about 400 kilowatts. The power plant was built in 1968 and was on the Rance tidal power plant, the second such facility in the world.
The system is protected as a scientific- technical monument of Russia. She has won at Expo 2005 in Japan a gold medal. Operator RusHydro.
The location for the power plant was chosen because of the fjord with an area of about 1 km ² and a tidal range of about 5 m at the mouth of a narrow strait has (width about 50 m ), which could be relatively easily closed by a shut-off.
The turbine building of reinforced concrete with dimensions of 36 m × 18 m × 15 m was built in a dock near Murmansk, then dragged over 100 km of floating to the site and lowered there on his foundation. The original turbine from the 1960s was a Kaplan turbine with a rotor diameter of 3.3 m. She came by the French company Neyrpic that had this type already used successfully in Rance.
As of 1994, the plant was shut down for ten years because of financing problems. Until that time, the plant had produced about 8 TWh of electrical energy. By closing the power plant, the inflow of sea water was so far hindered in accrued flood that the salt content in the water of the fjord markedly decreased, resulting in a fish kill resulted. It was only after the channel has opened, so that again held an exchange of water with the sea, the fauna recovered in the fjord.
In 2004, the plant began to operate again. For the re- commissioning the Kaplan turbine " orthogonal " was through a turbine (similar to an H- Darrieus rotor with 4 wings ) replaced with a power of 200 kW. This type of turbine has the advantage that the direction of rotation of the direction of water flow is independent, so that the rotation direction is not reversed with the change of the tide. This operating costs were reduced by approximately 30%. The rotor with a diameter of 2.5 m was made by the other known above all for its nuclear submarines Sevmash shipyard in Severodvinsk. Further in 2007, far more " orthogonal " turbine was installed with a power of 1500 kW, which was also produced from 2006 by Sevmash.
There are plans in Russia for two new, far larger projects of this type near the small town of Messines on the White Sea and near Tugur (Russian Тугур ) on the Sea of Okhotsk, the implementation is not expected in the near future.