高压电器2017，Vol.53Issue(8)：110-116,7.DOI:10.13296/j.1001-1609.hva.2017.08.019
潮湿环境下车顶绝缘子电场分布研究及优化策略
Research on Electric Field Distribution of Roof Insulator Under Humid Condition and Its Improving Strategy
摘要
Abstract
Under humid condition,water droplets on the surface of roof insulator will lead electric filed distortion,and induce corona discharge,which is a threat to train operation.A roof insulator computational model is established based on finite element method to simulate the influence of water droplet parameters,like position,size and amount,on electric flied distribution along insulator surface.And grading ring frequently used on insulator for high voltage transmission line is applied to roof insulator,to suppress corona discharge induced by water droplet.Theresult shows,water droplet at the junction of shed and sheath has the greatest impact on electric field distortion.When the radius of water droplet is 2 mm,influence of water droplet on shed is most obvious.A larger distance between water droplets results in weaker maximum electric field along insulator surface.The optimal configuration scheme of grading ring is confirmed that radius is 85 mm,the section radius of grading ring is 24 mm,and the height apart from the high voltage side is 50 mm.关键词
水珠/车顶绝缘子/均压环/电场/电晕放电Key words
water droplet/roof insulator/grading ring/electric field/corona discharge引用本文复制引用
彭松,吴广宁,邵梦春..潮湿环境下车顶绝缘子电场分布研究及优化策略[J].高压电器,2017,53(8):110-116,7.基金项目
国家自然科学基金(U1234202).Project Supported by National Natural Science Foundation of China(U1234202). （U1234202）
