Tianhuangping Pumped Storage Power Station
{{Infobox dam
| name =Tianhuangping Pumped Storage Power Station
| name_official =
| image =JiangNanTianChi.JPG
| image_caption =Upper reservoir
| image_alt =
| coordinates = {{coord|30|28|13|N|119|36|21|E|type:landmark|display=inline,title}}
| country =China
| location = Tianhuangping, Anji County of Zhejiang Province, China
| status = Operational
| construction_began =1993
| opening =2004
| demolished =
| cost =$900 million USD
| owner =
| operator =
| res_name =Tianhuangping Upper
| res_capacity_total ={{Convert|6760000|m3|acre.ft|abbr=on}} (Normal)
| lower_res_name =Tianhuangping Lower
| lower_res_capacity_total ={{Convert|6770000|m3|ft3|abbr=on}} (Normal)
| plant_pumpgenerators =6 reversible Francis turbines
| plant_turbines =
| plant_pumps =
| plant_hydraulic_head = {{Convert|887|m|abbr=on}}
| plant_capacity = 1,836 MW
2,016 MW (Planned)
| plant_capacity_factor =
| website =
| extra =
}}
The Tianhuangping Pumped Storage Power Station ({{zh|天荒坪抽水蓄能电站}}) is a pumped-storage power station in Tianhuangping, Anji County of Huzhou, Zhejiang Province, China. The power station has an installed capacity of {{convert|1836|MW}} utilizing 6 reversible Francis turbines. Construction began in 1993 and the power station was completed in 2004.{{cite web |title=Tianhuangping Pumped-Storage Hydro Plant, China |url=http://www.power-technology.com/projects/tianhuangping/ |publisher=Power-Technology.com|accessdate=3 January 2011}}{{Unreliable source?|reason=domain on WP:BLACKLIST|date=June 2016}}
Operation
=Tianhuangping Dam=
Situated on the Daxi Creek, the Tianhuangping Dam creates the power station's lower reservoir. The concrete face rock-fill dam is {{Convert|72|m}} high and {{Convert|577|m}} long. The dam creates a reservoir that can store {{Convert|6770000|m3|acre.ft}} of water and contains an uncontrolled side-weir spillway that can discharge a design level of {{Convert|536|m3/s}}.{{cite web |title=Tianhuangping Pumped Storage Power Station |url=http://www.chincold.org.cn/dams/rootfiles/2010/07/20/1279253974149477-1279253974151981.pdf |publisher=Chinese National Committee on Large Dams |accessdate=3 January 2011}}
=Upper reservoir=
From the lower reservoir, water is pumped up into the upper reservoir which has a normal storage capacity of {{Convert|6760000|m3|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 {{Convert|882|m}} long and {{Convert|7|m}} 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.
=Power station=
The six branch pipes feed water into the six turbines. Each reversible Francis turbine has a {{convert|306|MW}} installed capacity and {{convert|336|MW}} maximum capacity. The turbines and generators are stored in an underground power house measuring {{Convert|198.7|m}} long, {{Convert|21|m}} wide and {{Convert|47.7|m}} high. After power is produced, the water is discharged back into the lower reservoir and the entire process can repeat.
See also
{{stack|{{Portal|China|Water|Renewable energy}}}}