Blanda power station
| Blanda power station | ||
|---|---|---|
| location | ||
|
||
| Coordinates | 65 ° 24 '57 " N , 19 ° 49' 11" W | |
| country | Iceland | |
| Waters | Blanda , Blondulón | |
| power plant | ||
| owner | Landsvirkjun | |
| operator | Landsvirkjun | |
| construction time | from 1984 | |
| Start of operation | 1991 | |
| technology | ||
| Bottleneck performance | 150 megawatts | |
| Average height of fall |
287 m | |
| Expansion flow | 39 m³ / s | |
| Standard work capacity | 720 million kWh / year | |
| Turbines | 3 Francis turbines | |
| Others | ||
The Blanda power plant ( isl. Blöndustöð ) is a power plant operated by the Icelandic energy company Landsvirkjun , which uses the water of the Blanda river to generate energy, which is dammed up above the power plant to Lake Blöndulón .
history
The first ideas for building a hydroelectric power station on the Blanda River came up in the 1950s. Detailed studies were carried out in the 1970s and finally a concrete plan was presented in 1980. The Blanda project was officially started on May 6, 1982 by a parliamentary resolution. Construction of the power plant began in 1984, the first machine set went into operation in autumn 1991, and the last machine set in March 1992. The Blanda power plant is the first power plant in Iceland designed exclusively by Icelanders.
To compensate for the flooded areas that were created by the damming of the Blanda by an artificial dam, the state Landsvirkjun Group planted around 5000 hectares of wasteland from 1981 onwards.
In 1996 the dam of the reservoir was raised by 4 meters to increase the storage capacity. The power plant employs an average of 15 people.
technology
The power plant is fed from two reservoirs. The larger of the two lakes is formed by the Blanda and the Kolka barrier walls and has a usable volume of 400 million m³ with a surface area of 56 km². From there the water is led through canals and a lake to a second reservoir, which is formed by the Gilsá dam and has a usable volume of 20 million m³ over an area of 5 km². The power plant is also located there.
The power plant is built as a cavern power plant , ie the turbine house, in which three Francis turbines with an output of 50 megawatts each are operated, is located 200 m underground and is only accessible via an elevator or an 800 m long tunnel. The cavern has a footprint of 12 m × 66 m and a height of 28 m. The usable head is 287 m and an average water flow of 39 m³ / s flows through the turbines.