Est-20140717

The Štěchovice Hydro Power Station was built between 1938 and 1947. The concrete dam with granite revetment is 22.5 m high and 120 m long. This waterworks includes a lock chamber, which overcomes the difference of 19.10 m between the lower and upper water levels and is unique in Europe, and also the reservoir of the pumped-storage power station Homole with a total capacity of 0.5 million m3, and two steel penstock shafts of 1.7 to 2 m diameter and length 590 m. The medium-head part of the power station with 2 Kaplan turbines with total installed capacity of 22.5 MW (2x11.25 MW) was commissioned in 1944. The pumped-storage power station was initially built between 1941 and 1947. After many years of intensive exploitation, it was shut down in 1991 and reconstructed between 1991 and 1996. Instead of two sets arranged in three stages of total capacity of 42 MW it is now equipped with a single set of a reversing Francis turbine and a motor generator, which give a total capacity of 220 MWh. The set is installed in an underground generator room built in a pit which is approximately 45 m high. The power station includes also two outdoor switching stations, 110 kV and 22 kV. Both parts of the power station are fully automatic and are controlled remotely from the Control Room of the Vltava Cascade.

The Štěchovice water reservoir was built between 1938 and 1944. The concrete dam with a granite revetment is 22.5 m high and 120 m long, with five spillways with crest gates. These spillways with the capacity of 2,400 m3/s are able to handle floods as catastrophic as the one in 1890.

The medium-head power station is equipped as a classic run-off-river hydroelectric power station, with two sets of Kaplan turbines. It further includes an outdoor 110 kV switching station, and outgoing and distribution transformers.


Open-loop Pumped Hydro Storage


45,000

4:53.00