101 Three-dimensional Numerical Analysis of High-Temperature and High-pressure Gas Flow in Gas Circuit Breakers

Abstract

Gas circuit breaker is the very important safety device that instantaneously interrupts the circuit and protects the electric power equipment when an abnormal current in lightning strike for example flows to electric power transmission line of high voltage transmission system. Recently gas circuit breaker is required downsizing because cost and reduce use of SF_6 has greenhouse effect. In this study, we did three-dimensional analyses of high temperature gas behavior in gas circuit breaker using CRIMSON(Civa Refined Multiphase SimulasiON),and we compared experimental result with numerical result.