VERBUND's Mellach power plant is a run-of-river power plant on the Mur River in the municipality of Mellach in Styria.
*Source: ENTSO-E Production 2017
The Mellach power plant was built between 1982 and 1985 and is situated in the Mellach power plant group together with the thermal facilities. The run-of-river power plant contains two bulb turbines. The water flowing through the cooling water canal of the site’s thermal power plants is also used for generation purposes by an S-turbine. Around 74 GWh of electricity is generated annually in this way from hydropower.
Turbines and generators: The two bulb turbines have a nominal output of 8.55 MW each. Directly coupled are the two 10,000 kVA three-phase synchronous generators, which have a nominal voltage of 6.3 kV.
Cooling water turbine: The S-turbine with a nominal output of 582 kW for the cooling water channel is coupled to a generator with an output of 800 kVA.
Transformers: The plant has a 25,000 kVA block transformer for transforming the generated energy. It connects the 6.3 kV and the 110 kV voltage levels.
Weir system: The weir system is equipped with three pressure segment gates with weir flaps. They have a clear width of 15 metres and a closing height of 7.35 metres.
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