Problems of operating the 500-kV outdoor electrical equipment of the Sayano-Shushenskoe hydroelectric station

1.

The design scheme of the 500-kV OEE of the Sayano-Shushenskoe hydrostation has a number of substantial shortcomings reducing the reliability of power output. Reconstruction of the middle network of the existing 4/3 scheme to three networks with two switches per connection is the most optimal variant of reconstruction. Sectioning of the collecting bus systems is necessary for a further increase of the reliability of the scheme.

2.

In the case of repair works on equipment of small nonstandard switchgear, such as the 500-kV OEE of the Sayano-Shushenskoe hydrostation, it is necessary to use special equipment and mechanisms, the development of which must be recommended to domestic industry.

Translated from Gidrotekhnicheskoe Stroitel'stvo, No. 4, pp. 37–39, April, 1994.