| Tianhuangping Pumped Storage Power Station | |
| Coordinates: | 30.4703°N 119.6058°W |
| Country: | China |
| Location: | Tianhuangping, Anji County of Zhejiang Province, China |
| Status: | Operational |
| Construction Began: | 1993 |
| Opening: | 2004 |
| Cost: | $900 million USD |
| Res Name: | Tianhuangping Upper |
| Res Capacity Total: | 6760000m2 (Normal) |
| Lower Res Name: | Tianhuangping Lower |
| Lower Res Capacity Total: | 6770000m2 (Normal) |
| Plant Pumpgenerators: | 6 reversible Francis turbines |
| Plant Hydraulic Head: | 887m (2,910feet) |
| Plant Capacity: | 1,836 MW 2,016 MW (Planned) |
The Tianhuangping Pumped Storage Power Station is a pumped-storage power station in Tianhuangping, Anji County of Huzhou, Zhejiang Province, China. The power station has an installed capacity of utilizing 6 reversible Francis turbines. Construction began in 1993 and the power station was completed in 2004.[1]
Situated on the Daxi Creek, the Tianhuangping Dam creates the power station's lower reservoir. The concrete face rock-fill dam is high and long. The dam creates a reservoir that can store 6770000m2 of water and contains an uncontrolled side-weir spillway that can discharge a design level of .[2]
From the lower reservoir, water is pumped up into the upper reservoir which has a normal storage capacity of 6760000m2. 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 long and 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]
The six branch pipes feed water into the six turbines. Each reversible Francis turbine has a installed capacity and maximum capacity. The turbines and generators are stored in an underground power house measuring long, wide and high. After power is produced, the water is discharged back into the lower reservoir and the entire process can repeat.[2]