, Volume 46, Issue 4, pp 312-316
Date: 13 Nov 2012

Limitation of short-circuit currents and transient recovery voltages in 110 – 220 KV networks

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A method of limiting the short-circuit current in the circuit breaker of a damaged connection by shunting a section of the busbars to which it is connected is proposed. Software and hardware systems are developed which rapidly reveal dangerous short-circuit currents and issue commands to engage a shunting device. A high-voltage high-speed switch is developed based on controlled vacuum dischargers, which closes the circuit in not longer than 0.1 msec. The high speed of response of the system enables the impulse current to be redistributed between the damaged connector and the shunting device.

Translated from Élektricheskie Stantsii, No. 5, May 2012, pp. 50 – 54.