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Posted by Energetic
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 (239,080,294 cu 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).
From the lower reservoir, water is pumped up into the upper reservoir which has a normal storage capacity of 6,760,000 cubic metres (238,727,147 cu 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 three 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.
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.
|Tianhuangping Pumped Storage Power Plant|
|Locale||Tainhuangping, Anji County of Zhejiang Province, China|
|Construction cost||$900 million USD|
|Upper reservoir||Tianhuangping Upper|
|Reservoir capacity||6,760,000 cubic metres (238,727,147 cu ft) (Normal)|
|Catchment area||.327 square kilometres (0 sq mi)|
|Lower reservoir||Tianhuangping Lower|
|Reservoir capacity||6,770,000 cubic metres (239,080,294 cu ft) (Normal)|
|Catchment area||24.2 square kilometres (9 sq mi)|
|Pumped-storage station information|
|Pump-generators||6 x reversible Francis turbines|
|Hydraulic head||887 metres (2,910 ft)|
|Lower reservoir spillways||Controlled, side-weir|
|Lower reservoir spillway discharge||536 cubic metres per second (18,929 cu ft/s)|
|Power generation information|
|Installed capacity||1,836 MW|
|Maximum capacity||2,016 MW|