Английская Википедия:CU (power line)
Шаблон:Short description Шаблон:GeoGroupTemplate CU is the designation of a line for high-voltage direct current (HVDC) transmission between the Coal Creek Station power plant south of Underwood, North Dakota at Шаблон:Coord and the Dickinson converter station near Buffalo, Minnesota at Шаблон:Coord.
The designation most likely refers to two Minnesota-based power generation/transmission cooperatives that originally partnered to build the Coal Creek plant and associated line - Cooperative Power Association and United Power Association, which later merged to become Great River Energy. Great River Energy recently announced that the mine-mouth plant that supplies this line, Coal Creek Station, will be decommissioned in 2022, unless another entity steps up to acquire (and continue operating) the plant, leaving the future of this line in doubt.
The CU project controversy in 1978 and 1979 was a result of protests by farm landowners in the path of the CU line right of way.
The CU line, which went in service in 1978, can transfer an electrical power of 1,000 megawatts at a symmetrical transmission voltage of 400 kV. An overhead line connection 436 miles (710 kilometers) long is used, with two conductors per pole. Thyristor static inverters are used.[1]
Crossing of HVDC powerlines
Southeast of Wing, North Dakota, at Шаблон:Coord CU crosses Square Butte, another HVDC powerline. This is the only crossing point of two HVDC overhead powerlines in the Western hemisphere.
Electrodes
The ground return electrode line at Coal Creek Station uses the towers of the AC line between Шаблон:Coord and Шаблон:Coord as support before it ends at Шаблон:Coord.
The electrode line at Dickinson converter plant runs on the towers of the main line until a tower at Шаблон:Coord. From this tower it runs on a line on 4 poles until its endpoint situated at Шаблон:Coord.
References
- ↑ https://web.archive.org/web/20050526185217/http://www.transmission.bpa.gov/cigresc14/Compendium/CU.htm CU project description, retrieved 2010 June 8
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