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Ingula Pumped Storage Scheme : ウィキペディア英語版
Ingula Pumped Storage Scheme
The Ingula Pumped Storage Scheme (previously named Braamhoek) is currently being constructed by an Eskom and CMC Impregilo Mavundla Joint Venture in the escarpment of the Little Drakensberg range straddling the border of the KwaZulu-Natal and Free State provinces, South Africa. It is about southwest of Van Reenen. The pumped-storage hydroelectric scheme consists of an upper and a lower dam apart and connected to a power station by tunnels. The scheme is being built at a cost of US$3.5 billion (R25 billion).〔(【引用サイトリンク】url=http://www.gibb.co.za/Projects/IngulaPumpedStorageScheme.aspx )〕 Construction began in 2005 and the power station scheduled to begin operations in late 2015.〔(【引用サイトリンク】url=http://www.royalhaskoningdhv.com/en-gb/projects/the-ingula-pumped-storage-scheme/587 )〕〔(【引用サイトリンク】url=http://www.eskom.co.za/Whatweredoing/NewBuild/IngulaPumpedStorage/Pages/Ingula_Pumped_Storage_Scheme.aspx )
The pumped-storage hydroelectric plant will use water from the upper reservoir to generate electricity during the peak demand periods of the day. At night, excess power on the grid generated by conventional coal and nuclear plants is used to pump water to the upper reservoir. The upper Bedford Dam on Bedford stream, a tributary of the Wilge River, was completed in April 2011. It is a tall concrete-face rock-fill dam. It has a water storage capacity of which can be used for power generation. The lower Bramhoek Dam on Bramhoek stream, a tributary of the Klip River, was completed in November 2011. It is a tall roller-compacted concrete gravity dam. It has a water storage capacity of which can be pumped up to the upper reservoir. A long headrace tunnel connects the upper reservoir to the underground power station which will house 4 x reversible Francis pump-turbines. The elevation between the two reservoirs affords a hydraulic head (water drop) of . Water from the power station is discharged down a long tailrace tunnel to the lower reservoir.〔〔
== See also ==

* List of pumped-storage hydroelectric power stations

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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