中国电机工程学报Issue(21)：5632-5640,9.DOI:10.13334/j.0258-8013.pcsee.2015.21.029
受潮过程中复合绝缘子的有效附盐密度研究
Study on Effective Equivalent Salt Deposit Density of Wet Polluted Silicone Rubber Insulators
摘要
Abstract
Silicone rubber (SR) insulators have excellent hydrophobicity transfer performance, which makes the pollution layer be hydrophobic. Both the process of salt dissolving out of the pollution layer and running off from the surface of insulators would be more complicated for SR insulators. The pollution flashover characteristics are tightly related to the residual dissolved salt which made contribution to the surface conductivity of insulators. The concept of effective equivalent salt deposit density (EESDD, marked asρEESDD) was studied further. In this paperρEESDD was characterized with the amount of dissolved salt minus the amount of ran off salt. The influence of hydrophobicity transference time and non-soluble deposit density (NSDD, marked asρNSDD) onρEESDD was studied by experiment.ρEESDD of naturally polluted insulators was also studied as comparison. Test results indicate thatρEESDD of SR insulators increased in initial half period and decreased in ending half period of the wetting process. Hydrophobicity of pollution layer made the variation period ofρEESDD last for longer time. Rising ofρNSDD delayed the time corresponding to maximum value ofρEESDD. For naturally polluted insulators, maximum percent ofρEESDD was about 15%. It can be inferred that the lowerρEESDD was another reason why SR insulators have higher pollution flashover voltage.关键词
硅橡胶绝缘子/有效附盐密度(effective equivalent salt deposit density,EESDD)/受潮/盐分溶出/盐分流失Key words
silicone rubber insulators/effective equivalent salt deposit density/wetting/salt dissolving process/salt running off process分类
信息技术与安全科学引用本文复制引用
梁曦东,仵超,姚一鸣,高岩峰,王家福,刘瑛岩..受潮过程中复合绝缘子的有效附盐密度研究[J].中国电机工程学报,2015,(21):5632-5640,9.基金项目
国家重点基础研究发展计划项目(973项目)(2011CB 209406)。 The National Basic Research Program (973 Program)(2011CB 209406) （973项目）
