染污绝缘子沿面电场的数值计算及实测分析

Calculation and Measurement of Electric Field along Polluted Cylindrical Insulator

采用部分优化模拟电荷法和Ｐｏｃｋｅｌｓ场强测量仪，对染污光滑圆柱绝缘子在出现局部电弧前后以及局部电弧处于不同位置时的沿面电场分布进行了数值仿真计算和实测。根据计算和实测结果，系统地分析了各种情况下的电场分布对光滑圆柱绝缘子污闪过程中局部电弧向前延伸发展的影响。

In this paper,the electrical field distribution along the polluted cylindrical insu-lator before a nd after the local a re appea rs is calculated with the optim lzed pa rtially cha rge simula-tinn method and measured with the pockels device. Based on the calculating and measuring results,the in fluen ce of the electric field distri bu tion on the propagation of local a re in the flashover ofcyIlndrical insufator under various conditions is analyzed systematieally.