Dniester Pumped Storage Power Station

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The pumped storage power plant Dniester is located on the Dniester ( Dniester ) in Ukraine and is under construction since 1983. It is 8 km northeast of Sokyrjany in the Chernivtsi Oblast. Currently, there are seven 324- MW generators probably three ( as of 2012) in operation. With completion expected in 2017Vorlage: Future / In 3 years the power plant will have an installed capacity of 2268 MW.

Background

The Dniester Hydropower Complex with a pump storage power plant was planned in the 1970s, along with two dams ( Dniester I & II) and a nuclear power plant. 1983 Dniester II was a dam that impounds the lower basin completed. The construction of the plant began in 1988. Three years later, heard the construction going on because of the dissolution of the Soviet Union. The project was re- set in motion in 1993 and the construction work resumed in 2001. The construction costs rose because the previously built structures were not maintained. On 22 December 2009, the first generator was put into operation. The commissioning of the second and third generator were provided for 2011 and 2012 respectively. The difficulties of Ukraine to finance were affected by controversies relating to transparency, environmental influences, and the water flow after undercurrent to Moldova. The Ukraine had requested assistance from the World Bank, but only 29.6 million U.S. $ for the electrical transmission lines ready made ​​2007. Industry experts believe that Ukraine can complete the project independently. The hydroelectric power plant of the operator Ukrhydroenergo will probably go all the way to the grid in 2017.

Functioning and operation

The PSW works with reversible Francis turbines that pump in periods of low electricity demand water from the lower reservoir to the upper basin. The lower reservoir is dammed by the lock Dniester HPP - II, which is 7.5 km to the southeast near the border with Moldova. The lower reservoir has a storage space of 70 million m³. The upper reservoir with a storage space of 38.8 million m³ is formed by a ring dam. At high current demand water is discharged to the power plant to generate electricity. This changing process is used to adapt the generation of electricity to the changing needs. The height difference of the two reservoirs causes a hydraulic head of 38.7 m.

During the seven Francis turbines and generators at the power plant operation 7 × 324 MW = 2268 MW afford, 2947 MW capacity are taken at the pump with the same turbines.

Another, larger reservoir is dammed by the Dniester HPP lock -I. She stands 9 kilometers north of the power plant. The lock I HPP has its own hydroelectric power plant with an installed capacity of 702 MW and a storage space of 3,000 million m³. HPP - II has an installed capacity of 40.8 MW.