The Guangdong Pumped Storage Power Station or Guangzhou 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 near

Guangzhou Guangzhou (, ; ; or ; ), also known as Canton () and alternatively romanized as Kwongchow or Kwangchow, is the capital and largest city of Guangdong province in southern China. Located on the Pearl River about north-northwest of Hong Kon ...

, Guangdong Province, China. Power is generated by utilizing eight

turbines A turbine ( or ) (from the Greek , ''tyrbē'', or Latin ''turbo'', meaning vortex) is a rotary mechanical device that extracts energy from a fluid flow and converts it into useful Work (physics), work. The work produced by a turbine can be used ...

, each with a capacity, totalling the installed capacity to . The generated power is sold to CLP customers in

Hong Kong Hong Kong ( (US) or (UK); , ), officially the Hong Kong Special Administrative Region of the People's Republic of China (abbr. Hong Kong SAR or HKSAR), is a city and special administrative region of China on the eastern Pearl River Delta i ...

. The power station was constructed in two stages, the first four turbines were completed in 1994 and the second four in 2000.

Operation

The station is composed mainly of a lower and upper reservoir and an

underground power station An underground power station is a type of hydroelectric power station constructed by excavating the major components (e.g. machine hall, penstocks, and tailrace) from rock, rather than the more common surface-based construction methods. One or mor ...

. Water for the system is derived from the

Liuxihe River The Liuxi River (), or simply Liuxi, is a tributary of the Pearl River in China with its basin situated northeast of Guangzhou in Guangdong Province Guangdong (, ), alternatively romanized as Canton or Kwangtung, is a coastal province in ...

. The lower reservoir has a capacity of and is created by a tall and long gravity

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 ...

composed of roller-compacted concrete. Water from this reservoir is pumped into the upper reservoir which is created by a tall and long concrete face rock-fill embankment dam and has a capacity of . Water from the upper reservoir can then be re-released down two

penstock A penstock is a sluice or gate or intake structure that controls water flow, or an enclosed pipe that delivers water to hydro turbines and sewerage systems. The term is inherited from the earlier technology of mill ponds and watermills. H ...

s towards the power station. The same reversible pumps that moved the water up can now generate electricity. Just before reaching the power station, the two penstocks each split off into four separate branch pipes, each feeding one of the eight reversible 300 MW turbine generators with water. Once power generation is complete, the generators can reverse, pump the water back up to the upper reservoir and resume the process over again.

References

External links

Guangdong PPS
at China Light & Power {{Energy in the People's Republic of China Energy infrastructure completed in 1994 Energy infrastructure completed in 2000 Hydroelectric power stations in Guangdong Pumped-storage hydroelectric power stations in China Dams completed in 1994 Roller-compacted concrete dams Dams in China 1994 establishments in China Underground power stations

Operation

See also

References

External links