湿润复合绝缘子表面的电场分析  

Calculation of AC Electric Field Distributions along Polluted Polymer Insulators

作　　者：王仲奕[1] 王琪[1] 陈青[1] 

机构地区：[1]西安交通大学电气工程学院,陕西西安710049

出　　处：《高压电器》2010年第3期53-58,共6页High Voltage Apparatus

摘　　要：为了研究不同湿润条件下复合绝缘子周围的电场分布特性,笔者根据复合绝缘子上下表面不同憎水性等级时的湿润状态,建立了简化的三维计算模型,应用电场有限元计算软件ElecNet计算,比较了不同憎水性等级(水滴的形状参数不同以及分布状态不同)对复合绝缘子表面电场特性的影响,得出:复合绝缘子表面的电场与表面憎水性以及水滴分布状态有关;表面受潮形成的水滴或水带使水滴周围的电场急剧增大;伞裙下表面水滴周围的最大电场强度高于上表面;护套表面水滴对电场的增强程度远高于伞裙表面水滴对电场的增强程度。The model and the AC electric field distributions of polluted polymer insulators are studied based on pollution flashover mechanism. By adopting surface conductivity of pollution film and the simulated thin resistive sheet boundary condition, electric field distribution of the thin conductive film is modeled and Calculated with the electric field finite element analysis software ElecNet. The differences of potential and electric field distributions of insulators with uniform and nonuniform collocations along axial direction are compared, and the effects of pollution film conductivity and pollution film distribution on electric field distribution of insulators are obtained.

关 键 词：复合绝缘子 憎水性 有限元 电场 

分 类 号：TM216[一般工业技术—材料科学与工程]