Murray Gill & Gordon Evans
Customer Story | 1 min read
SVCs enable increased use of low-cost power generation
Since 1986, Kansas Gas and Electric Co. (KG&E) of Wichita has operated two static var compensators (SVC), delivered by Hitachi Energy, at the Murray Gill and Gordon Evans 138 kV substations in the Wichitha area.
The compensators, having a combined dynamic rating of 500 Mvar, were delivered on a turn-key basis.
Power is being transmitted to the Wichita region over a distance of 100 miles from the Wolf Creek nuclear power station by means of two 345 kV lines. The purpose of the compensators is to stabilize the voltage of the 138 kV system around Wichita during various network conditions, including major disturbances such as loss of either of the 345 kV feeding lines.
| Main data | ||
|---|---|---|
| Murray Gill | Gordon Evans | |
| Controlled voltage | 138 kV | 138 kV |
| Dynamic rating | 25 Mvar inductive to 200 Mvar capacitive | 0 to 300 Mvar capacitive |
| Control system | 3-phase voltage control by means of a voltage regulator | |
| Thyristor valves | Water-cooled 3-phase valves with magnetic triggering | |