雾霾参数对电晕老化硅橡胶外绝缘特性影响研究  

Influence of haze parameters on external insulation characteristics of corona-aged silicone rubber

作　　者：毕茂强 帅垭灵 邓润坤 江天炎 董扬 陈曦 BI Maoqiang;SHUAI Yaling;DENG Runkun;JIANG Tianyan;DONG Yang;CHEN Xi(School of Electrical and Electronic Engineering,Chongqing University of Technology,Chongqing 400054,China;State Grid Chongqing Electric Power Company Maintenance Branch,Chongqing 400039,China)

机构地区：[1]重庆理工大学电气与电子工程学院,重庆400054 [2]国网重庆市电力公司检修分公司,重庆400039

出　　处：《重庆理工大学学报（自然科学）》2023年第2期251-259,共9页Journal of Chongqing University of Technology：Natural Science

基　　金：国家自然科学基金项目(51607019);重庆理工大学研究生创新项目(gzlcx20223043)。

摘　　要：为研究雾霾的各参数和电晕放电对复合绝缘子伞裙的共同老化作用,以一种硅橡胶材料为试品,分别在单霾、盐雾以及雾霾环境中对试品进行不同时长的电晕老化试验,通过测试老化试品的闪络电压、电阻率、憎水性和泄漏电流进行评估分析。结果表明:闪络电压随老化时长的增加而降低;老化后试品的表面电阻率、体积电阻率和憎水丧失特性跟老化环境关系不大;在电晕老化早期,雾霾环境中的颗粒撞击是硅橡胶表面被破坏的主要原因;在后期,环境中的无机盐成分加速了电晕老化,且硫酸铵的作用比硝酸钠更强。研究结果可为评估雾霾频发地区复合绝缘子的使用寿命提供理论依据,在复合绝缘子抗雾霾、防污闪等方面提供参考。In order to study the co-aging effect of various parameters of haze and corona discharge on composite insulator sheds,this paper uses a silicone rubber material as the test sample to carry out corona aging tests for different time periods in single haze,salt fog and haze environments.The flashover voltage,resistivity,hydrophobicity and leakage current of the aging test sample are evaluated and analyzed.The results show that the flashover voltage decreases with the increase of the aging time.The surface resistivity,volume resistivity and hydrophobic loss characteristics of the sample after aging have little to do with the aging environment.At the early stage of corona aging,the particle impact in the haze environment is the main reason for the destruction of the silicone rubber surface.At the later stage,the inorganic salt in the environment accelerates the corona aging,and the effect of ammonium sulfate is stronger than that of sodium nitrate.The research results can provide a theoretical basis for evaluating the service life of composite insulators in haze-prone areas and a reference for anti-haze and anti-pollution flashover of composite insulators.

关 键 词：雾霾 硅橡胶 闪络 电晕放电 电阻率 

分 类 号：TM211[一般工业技术—材料科学与工程]