电瓷避雷器Issue(4)：131-139,9.DOI:10.16188/j.isa.1003-8337.2024.04.016
硅橡胶表面离散水珠电场分布及其影响因素研究
Electric Field Distribution and Influencing Factors of Discrete Water Droplets Over Silicone Rubber Surface
摘要
Abstract
In high humidity and temperature environment,raining and morning condensation are usual to leave small water droplets on the surface of composite insulator in transmission line.At the junction of three media around the water droplet under external electric field,it is easy to occur strong distortion of electric field,resulting in corona discharge and loss of hydrophobicity on the surface of silicone rubber material of composite insulator,which will lead to accelerated aging and surface flashover.In order to in-vestigate the influencing factors of water droplet corona discharge,it is necessary to simulate the electric field near water droplets,and investigate the influence of water droplets separated on silicone rubber sur-face on the electric field distribution under horizontal electric field.The influence of four physical param-eters such as water droplet volume,number,spacing and static contact angle on the degree of electric field distortion is studied.A 3D model is established based on multi-physical field simulation software.The electric field distribution under different physical parameters is calculated using the finite element method and control variable method.The electric field enhancement factor is calculated,and the change process of corona discharge caused by the deformation of water droplets under AC voltage is explained based on results of simulation and experiments.The results can provide a reference for further explanation and analysis of the development of water droplet corona discharge to surface flashover.关键词
硅橡胶/水珠起晕/电场仿真/电场分布/接触角Key words
silicone rubber/water droplet onset corona/electric field simulation/electric field distribu-tion/contact angle引用本文复制引用
王敩青,张瑞晨,张予阳,杨跃光,尹芳辉,王黎明..硅橡胶表面离散水珠电场分布及其影响因素研究[J].电瓷避雷器,2024,(4):131-139,9.基金项目
国家自然科学基金面上项目(编号:51977118) （编号:51977118）
南网科技项目"主网架输电线路复合绝缘子均压环配置技术研究"(编号:CGYKJXM20200202).Project supported by National Natural Science Foundation of China(NSFC)(No.51977118) （编号:CGYKJXM20200202）
Science and Technology Program of China Southern Power Grid(No.CGYKJXM20200202). （No.CGYKJXM20200202）
