1986•IEEE Transactions on Power DeliveryRequires access

Suppression of Fast Transient Overvoltage during Gas Disconnector Switching in GIS

J. Ozawa, T. Yamagiwa, Masao Hosokawa, S. Takeuchi, H. Kozawa

Abstract

This paper describes the suppression of the transient overvoltage caused by gas disconnector switching of a small capacitive charging current in a gas insulated switchgear substation. The overvoltage is suppressed by the insertion of a resistor with an appropriate value during the switching. A scale model gas disconnector with the resistor is developed. The overvoltage suppression effect and the charging current breaking capability of the gas disconnector are experimentally confirmed. A prototype ultra high voltage gas disconnector is trial manufactured and tested.

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Available abstract

Key concepts: Disconnector, Switchgear, Overvoltage, Resistor, Transient (computer programming), Circuit breaker, Electrical engineering, Engineering