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.
See also
*
Huizhou Pumped Storage Power Station
*
List of power stations in China
The following page lists some power stations in mainland China divided by energy source and location.
Coal
Nuclear
Hydroelectric
Solar
Tide
Wind
By location
The following pages list the major power stations ...
References
External links
Guangdong PPSat 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