冰雪环境下复合绝缘子有限元分析

Finite Element Analysis of Composite Insulator under Snow and Ice Conditions

为了分析冰雪环境下复合绝缘子附近电场分布的变化情况,使用Ansys有限元软件对覆冰与覆雪同时存在的复合绝缘子进行了相关分析。通过对不同伞群伞径、伞间距、雪高度、冰棱长度等情况进行系统分析,得出覆冰和覆雪都会使得复合绝缘子的电场分布发生一定畸变,其中覆雪相对于覆冰来说对于复合绝缘子影响较弱。并且通过对不同伞群结构的复合绝缘子仿真分析得出,同样大伞间距时大小中小大的伞群结构对绝缘子覆冰、覆雪的电场畸变有很好的缓解作用,更加适用于常年处于冰雪天气下的地区。

In order to analyze the changes of electric field near the insulator under snow and ice conditions, the composite insulator covered with ice and snow is analyzed by Ansys finite element software. It is obtained that distortion will occurred in the electric field when ice and snow covered, through the system analysis on the conditions of different type, dimension and space of sheds, snow height, ice length and etc, and the influence of snow on composite insulator is weaker than the influence of ice. And through simulated analysis of the insulator with different sheds structure it is obtained that, the sheds structure with the same sheds space has good relief effect for electric field distortion of insulator with ice-covered and snow-covered, it is more suitable to the area under ice and snow all the year round.