Study on 10kV Quick Vacuum Circuit Breaker of Double Opening and Closing Coil

Abstract

The research status of quick vacuum circuit breakers at home and abroad is analyzed, and the problems such as low efficiency and reliability of existing control mechanism are put forward. On this basis, a new type of 10kV quick vacuum circuit breaker of double opening and closing coil is proposed. The new vacuum circuit breaker has two sets of opening and closing coil. Each set of opening and closing coil has a separate charging capacitor circuit. When a set of opening and closing coil or charging capacitor circuit failure, resulting in one of the metal repulsion disk not moving, the other set of opening and closing coil will successfully cut off the current, thereby avoiding unnecessary losses and improving the reliability and stability of the circuit breaker.