The Jixi Pumped Storage Power Station () is a

pumped-storage Pumped-storage hydroelectricity (PSH), or pumped hydroelectric energy storage (PHES), is a type of hydroelectric energy storage used by electric power systems for load balancing. The method stores energy in the form of gravitational potential ...

hydroelectric power station currently under construction in

Jixi County Jixi County (, Mandarin pronunciation: ; Jixihua pronunciation: ''jie' cii xin'') is a county under the administration of the prefecture-level city of Xuancheng, in the southeast of Anhui province, China, bordering Zhejiang province to the east ...

Anhui Province Anhui , (; formerly romanized as Anhwei) is a landlocked province of the People's Republic of China, part of the East China region. Its provincial capital and largest city is Hefei. The province is located across the basins of the Yangtze River ...

, China. Studies were carried out in 2008 and construction began in December 2010. It is expected to last 6 years. As of April 2017 the dam is completed. First turbine was commissioned in December 2019, followed by second in May 2020 and third and fourth in August 2020. The last two units were commissioned in February 2021.

Reservoirs

The lower reservoir is formed by a tall and long

concrete-face rock-fill dam A dam is a barrier that stops or restricts the flow of surface water or underground streams. Reservoirs created by dams not only suppress floods but also provide water for activities such as irrigation, human consumption, industrial use, ...

(CFRD), with a storage capacity of of which is active (or 'usable') for pumping. The upper reservoir is formed by a CFRD as well, which is tall and long, withholding a man-made lake. The normal elevation of the lower reservoir is and the upper . This difference in elevation affords a rated

hydraulic head Hydraulic head or piezometric head is a specific measurement of liquid pressure above a vertical datum., 410 pages. See pp. 43–44., 650 pages. See p. 22. It is usually measured as a liquid surface elevation, expressed in units of length, ...

of . The power station is located located underground near the bank of the lower reservoir and contains six 300 MW

Francis pump turbine The Francis turbine is a type of water turbine. It is an inward-flow reaction turbine that combines radial and axial flow concepts. Francis turbines are the most common water turbine in use today, and can achieve over 95% efficiency. The proces ...

-generators.

References

{{reflist Dams in China Pumped-storage hydroelectric power stations in China Concrete-face rock-fill dams Hydroelectric power stations in Anhui Underground power stations

Reservoirs

See also

References