Trends in Switching and Protection Technology for Stable Supply of Electricity

Abstract

Switching and protection equipment in electric power transmission and distribution systems, such as circuit breakers, surge arresters, and switchgear, are essential components for the stable supply of electricity. The demands on the equipment, for example, low maintenance cost, long life, and environmental friendliness, have been growing. Development trends in switching and protection technology applied to gas insulated switchgear, gas circuit breakers, electric power distribution equipment, medium voltage switchgear, and surge arresters are reviewed in this paper.