Tianhuangping Pumped Storage Power Station

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Tianhuangping Pumped Storage Power Station
JiangNanTianChi.JPG
Upper reservoir
Tianhuangping Pumped Storage Power Station is located in China
Tianhuangping Pumped Storage Power Station
Location of Tianhuangping Pumped Storage Power Station
Country China
Location Tianhuangping, Anji County of Zhejiang Province, China
Coordinates 30°28′13″N 119°36′21″E / 30.47028°N 119.60583°E / 30.47028; 119.60583Coordinates: 30°28′13″N 119°36′21″E / 30.47028°N 119.60583°E / 30.47028; 119.60583
Status Operational
Construction began 1993
Commission date 2004
Construction cost $900 million USD
Pumped-storage power station
Upper reservoir Tianhuangping Upper
Upper res. capacity 6,760,000 cubic metres (238,727,147 cu ft) (Normal)
Penstocks 3
Lower reservoir Tianhuangping Lower
Lower res. capacity 6,770,000 cubic metres (239,080,294 cu ft) (Normal)
Hydraulic head 887 metres (2,910 ft)
Pump-generators 6 x reversible Francis turbines
Power generation
Nameplate capacity 1,836 MW (installed)
2,016 MW (max. planned)

The Tianhuangping Pumped Storage Power Station is a pumped-storage power station in Tianhuangping, Anji County of Zhejiang Province, China. The power station has an installed capacity of 1,836 MW utilizing 6 x reversible Francis turbines. Construction began in 1993 and by 2004 the power station was complete.[1]

Operation[edit]

Tianhuangping Dam[edit]

Situated on the Daxi Creek, the Tianhuangping Dam creates the power station's lower reservoir. The concrete face rock-fill dam is 72 metres (236 ft) high and 577 metres (1,893 ft) long. The dam creates a reservoir that can store 6,770,000 cubic metres (5,489 acre·ft) of water and contains an uncontrolled side-weir spillway that can discharge a design level of 536 cubic metres per second (18,929 cu ft/s).[2]

Upper reservoir[edit]

From the lower reservoir, water is pumped up into the upper reservoir which has a normal storage capacity of 6,760,000 cubic metres (5,480 acre·ft). The upper reservoir is artificial and cut into the mountain and created with the assistance of four saddle dams. When power is being generated, the water leaves the reservoir and falls through two 882 metres (2,894 ft) long and 7 metres (23 ft) diameter penstocks down towards the power station which is above the lower reservoir. Before reaching the reversible turbines, the water branches off into six branch pipes.[2]

Power station[edit]

The six branch pipes feed water into the six turbines. Each reversible Francis turbine has a 306 MW installed capacity and 336 MW maximum capacity. The turbines and generators are stored in an underground power house measuring 198.7 metres (652 ft) long, 21 metres (69 ft) wide and 47.7 metres (156 ft) high. After power is produced, the water is discharged back into the lower reservoir and the entire process can repeat.[2]

See also[edit]

References[edit]

  1. ^ "Tianhuangping Pumped-Storage Hydro Plant, China". Power-Technology.com. Retrieved 3 January 2011. 
  2. ^ a b c "Tianhuangping Pumped Storage Power Station". Chinese National Committee on Large Dams. Retrieved 3 January 2011.