Kannagawa pumped storage power plant
| Kannagawa pumped storage power plant | ||
|---|---|---|
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| location | ||
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| Coordinates | 36 ° 0 '18 " N , 138 ° 39' 9" E | |
| country |
 Japan
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| place | Minamiaiki , Ueno | |
| Waters |
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| power plant | ||
| operator | Tōkyō Denryoku (Tepco) | |
| Start of planning | 1993 | |
| construction time | 2003 to after 2020 | |
| Start of operation | 2005 | |
| technology | ||
| Bottleneck performance |
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| Average height of fall |
653 m | |
| Expansion flow | 510 m³ / s | |
| Turbines | 6 × pump turbines | |
| Generators | 6 × motor generators | |
| Others | ||
| Website | Kannagawa power station | |
The Kannagawa pumped storage power plant ( Japanese. 神 流川 発 電 所 , Kannagawa hatsudensho , German "Kannagawa power plant") is a pumped storage power plant under construction by Tōkyō Denryoku (or Tokyo Electric Power Company (Tepco)) near Minamiaiki in Nagano and Ueno prefecture in Gunma in Japan . The hydropower plant uses the height difference between a lower and an upper basin, which are formed by two dams. The upper one is the Minamiaiki Dam on the Minamiaiki-gawa River and the lower is the Ueno Dam on the Kanna-gawa River. The power plant will have six pump turbines and generators of 470 MW each, which together can produce 2820 MW. So far only one machine unit has been put into operation in 2005. When it is completed around 2020, the power plant will have the greatest capacity of a pumped storage plant that there is on earth.
construction
In July 1993, the Kannagawa Hydropower Planning Bureau was established and in July 1995 the power plant was approved. Construction work began in May 1997. In October 2003, the lower basin at the Ueno dam began to be dammed, and the Minamiaiki reservoir filled up the next year. Both dams were completed in 2004 and the upper basin was also completely dammed in 2004.
Hydroelectric power plant
The underground power plant is almost 500 m underground and is 216 m long, 33 m wide and 51 m high. It will have six pump turbines , each with an output of 470 MW, with a total output of 2820 MW. The water flows from the upper Minamiaiki basin through the power station, where it generates electricity, into the Ueno lower basin. The pump turbines can then pump the water from the lower reservoir back into the upper reservoir at times of low consumption. The connecting pipeline is six kilometers long. The hydraulic drop height is 653 m and the maximum flow rate 510 m³ / s. Machine Unit 1 started commercial operation in 2005 and the second unit is expected in 2012. The others will not start operating until 2020.
The two dams
The upper Minamiaiki dam is located in the municipality of the same name in Nagano prefecture and is a 136 m high and 444 m long rock rubble dam . It consists of 7.3 million cubic meters of bulk material and accumulates a 19.17 million m³ reservoir. It is fed by the Minamiaiki-gawa River, which is part of the Shinano river system. (The coordinates refer to the Minamiaiki Dam.)
The lower Ueno dam in the municipality of the same name in the Gunma prefecture is a 120 m high and 350 m long concrete gravity dam . It consists of 720,000 m³ of concrete and has an 18.4 million m³ reservoir. It is fed by the Kanna-gawa of the Tone river system.
Web links
- Tōkyō Denryoku: Kannagawa power station (Japanese)
Individual evidence
- ↑ a b Press Release: Commencement of Commercial Operation of Unit 1 of Kannagawa Hydropower Plant-- Pumped-Storage Power Plant with World's Largest Capacity . TEPCO. December 22, 2005. Retrieved August 31, 2010.
- ↑ a b c d Robert Peltier: Kannagawa Hydropower Plant, Japan . Power Magazine. August 15, 2006. Retrieved August 31, 2010.
- ↑ a b c Specifications of Kannagawa Pumped Storage Power Plant . IEA Hydro. Archived from the original on July 27, 2010. Info: The archive link was automatically inserted and not yet checked. Please check the original and archive link according to the instructions and then remove this notice. Retrieved August 31, 2010.
- ↑ Annual Report 2010 (PDF; 4.4 MB) TEPCO. Retrieved August 31, 2010.
