电力机车车顶绝缘子电场计算

在车顶绝缘子闪络事故中,由于绝缘子覆冰而导致的闪络事故占很大比例.如何才能有效地减少车顶绝缘子上覆冰的形成,提高绝缘子覆冰闪络电压,已经成为华北地区电气化铁路急需解决的难题.针对车顶绝缘子冰闪事故的实际发生情况,采用绝缘子表面部分涂覆半导体涂料的组合绝缘子设计方案.笔者利用有限元电场分析方法,分析了半导体涂料涂覆长度和...

Electric Field Calculation for Electric Locomotive Roof Insulator

In all these flashover accidents,the reason that caused by ice accumulation covered a large proportion.How to effectively reduce the forming of ice on roof insulator used in electric locomotive and improve the flashover characteristic of icing insulator,has became a serious problem that urgently needs tobe addressed in electric railway in North China.In connection with actual situation of the ice coating flashover on roof insulator,we adopted the design of combination insulator that partial surface was covered with semi-conducting glaze.Electric field around the insulator surface with changing of the position and length of semi-conducting glaze was calculated by finite element method.In the end,the optimization coating design of the semi-conducting glaze was given and coated on the roof insulator surface.