Dorfhain hydroelectric power station
| Dorfhain hydroelectric power station | ||
|---|---|---|
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| location | ||
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| Coordinates | 50 ° 56 '15 " N , 13 ° 33' 55" E | |
| country |
Germany Saxony
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| place | Village grove | |
| Waters | Wild Weisseritz | |
| power plant | ||
| owner | DREWAG - Stadtwerke Dresden GmbH | |
| Start of operation | 1944 | |
| technology | ||
| Bottleneck performance | 1.3 megawatts | |
| Turbines | 2 Francis turbines from Voith | |
| Generators | 2 asynchronous three-phase generators from Siemens-Schuckertwerke | |
| Others | ||
The hydropower plant Dorfhain is a run-of-river power plant near Dorfhain and is owned by Stadtwerke Dresden .
Most of the raw water supply for the city of Dresden was to come from the water from the Klingenberg dam . For this reason, the Coschütz waterworks was built, which is supplied with this raw water via a combined tunnel / pipe system. For this purpose, a pressure of approx. 6 bar had to be reduced at Dorfhain, which results from the difference in altitude between the Klingenberg dam and the Dorfhain tunnel entrance.
The Dorfhain hydropower plant was built as a technical structure for this purpose. The official commissioning took place on July 1, 1944. Until then, the Wilde Weißeritz was dammed by a weir and the water was directed through a tunnel to the Tharandt hydroelectric power station . This weir was destroyed by the flood of the century. The remains of the complex were demolished and the Wilde Weißeritz renatured.
Two Francis turbines (built in 1939, manufacturer: Voith ) are driven in the waterworks . The directly coupled asynchronous three-phase generators (year of construction: 1939, manufacturer: Siemens-Schuckertwerke ) each have an output of 650 kW. If the turbines fail, an energy destroyer (year of construction: 1939, manufacturer: Voith, system: 2 ventilated needle valves) safeguards the raw water supply for the Coschütz waterworks.