Imaichi Pumped Storage Plant
The Imaichi Dam (今市ダム) is a concrete gravity dam on the Togawa River located 4 kilometres (2.5 mi) west of Nikkō in Tochigi Prefecture, Japan.
The dam serves as the lower reservoir for the 1,050 megawatts (1,410,000 hp) Imaichi Pumped Storage Power Station, while the Kuriyama Dam forms the upper.
It is owned by TEPCO and was constructed between 1979 and 1986.
The reservoir can store 9,100,000 cubic metres (7,400 acre⋅ft) of water. Of that storage volume, 6,200,000 cubic metres (5,000 acre⋅ft) can be used for power generation.
Imaichi Pumped Storage Power Station
The power plant operates using the pumped storage hydroelectric method. During periods of high electricity demand, water is sent from the upper Kuriyama Reservoir to the power plant which contains 3 x 350 megawatts (470,000 hp) Francis pump turbines. Water discharged from the power plant then enters the Imaichi Reservoir. When demand is low, the pump-generators reverse mode and pump water from the lower reservoir back up to the upper. The process repeats as needed.
See also
References
Wikimedia Commons has media related to Imaichi Dam.
- ^ "Tokyo Electric Power Station Imaichi" (in Japanese). Suiryoku.com. Retrieved 19 January 2012.
- ^ Engineers, prepared by Task Committee on Pumped Storage of the Committee on Hydropower of the Energy Division of the American Society of Civil (1996). Hydroelectric pumped storage technology : international experience. New York, NY: American Soc. of Civil Engineers. pp. 2.2 1–5. ISBN 0-7844-0144-6.
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