高压电器2018，Vol.54Issue(8)：27-32,6.DOI:10.13296/j.1001-1609.hva.2018.08.005
局部破损RTV涂层盘型悬式绝缘子的污闪特性研究
Study on Pollution Flashover Characteristics of RTV Coating Disc Suspension Insulators with Different Local Defects
摘要
Abstract
Under high temperature, high humidity and strong ultraviolet radiation environment, the performances of RTV (room temperature vulcanized silicone rubber) coating caused by pulverization, local defect and uneven hydrophobicity on surfaces of insulator will be deteriorated. In this paper, the effects of anti-pollution flashover of RTV with partial defects are analyzed. The pollution flashover tests of glass samples with RTV coating are designed to research the influence of the pollution flashover voltage and the similar cap and pin insulators are also used to verify the test results. The finite element software is used to analyze the influence of the electric field on the surface of insulator caused by local defects. The test results show that the anti-pollution flash performance will become much worse as the length of partial defect of RTV coating in the direction of creepage distance is longer, the influence of pollution flashover voltage is different if the position that the partial defect of RTV coating on the surface of insulator is located in different, and there is no significant decrease in the anti-pollution flashover performance if the partial defect appears on the high voltage side. The electric field in other area of RTV coating will enhance, which leads to the corona discharge more likely to appear and damage the hydrophobicity of other RTV coating.关键词
绝缘子/RTV涂层/局部破损/污闪特性/爬电距离Key words
insulator/RTV coating/local defect/pollution flashover characteristics/creepage distance引用本文复制引用
伏祥运,曹彬,崔建胜,孙浩然,梅红伟,王黎明..局部破损RTV涂层盘型悬式绝缘子的污闪特性研究[J].高压电器,2018,54(8):27-32,6.基金项目
国家自然科学基金 (51377093).Project Supported by National Natural Science Foundation of China(51377093). （51377093）
