交直流避雷器耐污秽能力研究  

Research on the Pollution-Resistant Capacity of AC/DC MOA

作　　者：张搏宇[1] 苏宁[1] 吕雪斌[1] 张翠霞[1] 殷禹[1] 陈立栋[1] 

机构地区：[1]中国电力科学研究院,北京100192

出　　处：《电瓷避雷器》2014年第1期79-84,共6页Insulators and Surge Arresters

基　　金：国家电网公司重点科技项目(编号:GY71-10-017)

摘　　要：研究限制避雷器耐污秽能力的关键因素有助于制定合理的避雷器污秽试验方法,提高耐污型避雷器的设计水平。本文以相关标准规定的污秽试验方法为基础,通过试验考核了不同外套的交直流避雷器的最大耐受盐密。结果表明:外部闪络是限制避雷器耐污秽能力的最关键因素;瓷外套避雷器在污秽试验时温升超过40K,内部热稳定性也是限制其耐污秽能力的关键因素之一;避雷器内部芯体有助于提高外套的耐污闪能力。The research on pollution-resistant capacity of MOA is helpful to formulating a probable artificial pollution test method, and also designing arresters with advanced performance under pollution condition. Based on the pollution test methods specified in the related standard, this article compares the maximum withstand degree of pollution of different samples with different housed. The results show that the external insulation is the key factor of pollution-resistant capacity for MOA, and also the thermal stability should not be ignored for some samples. The internal varistors are helpful to improving anti-pollution flashover of MOA.

关 键 词：避雷器 污秽试验 内部温升 外绝缘 闪络 

分 类 号：TM862.1[电气工程—高电压与绝缘技术]