罐式SF_6高压断路器灭弧室电场分布的有限元分析

The Finite Element Analysis of the Electric Field Distribution in the Arc Chute of Tank Type SF 6 Circuit Breaker

用有限元法对日本日立公司的ＯＦＰＴＢ－５５０型罐式断路器灭弧室内的电场分布进行数值计算，分析计算了灭弧室内动、静触头在分合过程中不同位置的静态电场，找到了最大场强的位置，得到了不同开距状态下灭弧室内的电场分布和沿触头表面的电场强度分布的情况，对断路器灭弧室内的绝缘强度进行了评估．

The electric field distribution in the arc chamber of tank type OFPTB 550 SF 6 circuit breaker′s closed boundary is computed by finite element method. The electric field of the interrupter in different electrod positions is calculated and the position of the maximum stress has been found. The electric field distribution in the arc chamber and the field strength distribution on the contact surface have been obtained. The insulation strength of the chamber has been evaluated.