Feistritz-Ludmannsdorf Run-of-River Power Plant

VERBUND’s Feistritz-Ludmannsdorf power plant is a run-of-river power plant on the Drava River in the municipality of Feistritz, Carinthia. It was constructed from 1965 until 1968 by Österreichische Draukraftwerke AG.

* Source: ENTSO-E Production 2017

The Feistritz-Ludmannsdorf power plant was built between 1965 and 1968 with the financial involvement of KELAG. Since 2007, all ten power plants of the Drava plant group, including Feistritz-Ludmannsdorf, between Spittal and the Slovenian border have been managed together by the Drava central control room. Two Kaplan turbines generate an annual average of approx. 351 GWh of electricity.

 

Turbines and generators: Two vertical Kaplan turbines with an impeller diameter of 5.1 metres each generate approximately 351 GWh of electricity per year with a bottleneck capacity of 88,000 kW. The two three-phase synchronous generators have an output of 45,000 kVA each with a nominal voltage of 10.5 kV. They are designed as screen rotors of type W6 and, like at the Edling power plant, they each have a main exciter and an auxiliary synchronous generator for exciting the main exciter. Cooling is provided by the air via a cooling circuit, with the waste heat being used to heat the machine hall in winter.

Transformers: The generated energy is raised from 10.5 kV to 220 kV by two 45 MVA main transformers.

Weir system: The weir system, which is unique on the Drava river, has three 15 metre-wide weir fields and was executed as a stop-log weir due to the drop height. At the base, a bottom outlet with a 5.8 metre-high pressure segment enables the discharge of flood water, while a 6.04 metre-tall gate regulates the final level above the stop-log. The segments and gates are controlled with oil-based hydraulics.

The Feistritz-Ludmannsdorf power plant was built between 1965 and 1968 with the financial involvement of KELAG.