Problems of operating the 500-kV outdoor electrical equipment of the Sayano-Shushenskoe hydroelectric station
The Sayano-Shushenskoe hydroelectric station is part of the Siberian interconnected power system. Power is transmitted to the grid by two 500 kV transmission lines. The site characteristics made nearby placement of conventional 500 kV switchyard equipment impossible. The original plans were to place the switchyard 35 km away, but the 500 kV lines to the yard would have passed through mountain regions with intense thunderstorm activity. Because of the unique design of the generators, the number of lightning-induced disconnects was substantial. For greater reliability, 500 kV equipment suitable for placement at the sight was designed, and the overall electrical layout of the yard was revised by reconstructing the middle network of the 4/3 scheme to three networks with two switches per connection. Sectioning of the collecting bus systems was necessary for a further increase in the reliability of the yard.
- Sponsoring Organization:
- USDOE
- OSTI ID:
- 379351
- Journal Information:
- Hydrotechnical Construction, Vol. 28, Issue 4; Other Information: PBD: Oct 1994; TN: Translated from Gidrotekhnicheskoe Stroitel`stvo; No. 4, 37-39(Apr 1994)
- Country of Publication:
- United States
- Language:
- English
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