硅橡胶表面分离水珠在不均匀电场中的放电特性分析  

Study of the Discharge Characteristics of the Discrete Water Droplets on the Silicone Rubber Surface in the Non-Uniform Electric Field

作　　者：李建[1] 刘念[1] 王利来[1] 潘荣超[1] 刘航宇[1] 冉立[1] 

机构地区：[1]四川大学电气信息学院,成都610065

出　　处：《电测与仪表》2014年第18期30-33,61,共5页Electrical Measurement & Instrumentation

摘　　要：通过针板电极模拟硅橡胶表面的极不均匀电场,研究硅橡胶表面分离水珠在不均匀电场中的放电特性,结果发现:在针板电极电场中,水珠的数量要达到一定程度后才能显著影响硅橡胶表面的闪络电压,少量分离水珠处于硅橡胶表面时闪络电压基本不变;水滴体积对不均匀电场中的闪络电压影响较小;硅橡胶表面闪络电压随分离水珠电导率的增大而减小。With the needle-plate electrode simulating the non-uniform electric field of the silicone rubber surface, the paper studied the discharge characteristics of the discrete water droplets on the silicone rubber surface in the non-uniform electric field. The results showed that in the needle-plate electric field, the surface flashover voltage of the silicone rubber would be remarkably affected only when the number of the discrete water droplets reached a certaindegree, that the surface flashover voltage remained the same when a few discrete water droplets were on the surface of the silicone rubber,that the flashover voltage in the non-uniform electric field was hardly affected bythe volume of the discrete water droplets, and that the flashover voltage on the silicone rubber surface would decrease with the increase of the conductivity of the discrete water droplets.

关 键 词：硅橡胶 分离水珠 不均匀电场 闪络电压 

分 类 号：TM93[电气工程—电力电子与电力传动]