330kV单断口SF_6断路器灭弧室内全场域电场数值分析

Numerical Analysis of Electric Field for 330kV Puffer SF_6 Arc-extinguishing Chamber

运用四边形八结点等参元有限元法对不同结构的330kV单断口SF_6断路器灭弧室的全场域进行了电场数值计算.通过对比数值计算结果,讨论了均压电容器、电客器屏蔽罩、动触头屏蔽罩对电场分布的影响.

Using quadrangle 8 - nodded isoparametric finite element analysis method, the electric field calcula-tions are made for different configurations of 330kV SF6 puffer arc - extinguishing chamber. The influences of the voltage - dividing capacitor, the shield of voltage - dividing capacitor and the shield of moving contact on electric field are dis-cussed by comparing the numerical calculation results.