不同盐密灰密对瓷绝缘子污秽闪络特性影响的研究  

The Influence of Different Pollution on the Flashover Characteristic of Porcelain Insulator

作　　者：周瑜[1] 李军[1] 张仲秋[1] 吴童生[1] 李志玮[1] 

机构地区：[1]青海电力科学试验研究院,西宁810008

出　　处：《绝缘材料》2009年第6期58-60,共3页Insulating Materials

摘　　要：针对电力系统绝缘子污秽闪络产生的危害问题,采用升压法对涂污秽物的单片瓷绝缘子(XP-210)进行人工污秽试验,分析了不同盐密(NaCl)、灰密(硅藻土)对单片瓷绝缘子闪络电压的影响。结果表明:盐密、灰密对单片瓷绝缘子人工污秽闪络电压都有影响,闪络电压与盐密、灰密均成幂函数关系,并且二者对闪络电压的影响是独立的。据此提出了划分电网污秽等级的建议。The influence of ESDD and NSDD on flashover voltage was analyzed with single porcelain insulator（XP-210） as test sample in order to solve the damage problem of pollution flashover.The results show that ESDD and NSDD have independent influence on the flashover voltage in artificial contamination test;the relationship between flashover voltage and ESDD,NSDD could be expressed as power function with a negative index.Therefore a suggestion on classification of electric grid pollution was put forward.

关 键 词：瓷绝缘子 盐密 灰密 人工污秽试验 污秽闪络 

分 类 号：TM216.3[一般工业技术—材料科学与工程] TM201.46[电气工程—电工理论与新技术]