涂污绝缘子在盐雾环境下的交流闪络特性研究  

Experiment Research on AC Flashover Performance of Smearing Insulator under Sea-Salt Pollution

作　　者：王昱晴 宋思齐[1] 罗亚运[1] 肖黎明[1] 张丹丹[1] 王绥瑜 陈钦柱 何正浩[1] 

机构地区：[1]强磁场工程与新技术国家重点实验室(华中科技大学),武汉430074 [2]海南电力技术研究院,海口570125

出　　处：《电瓷避雷器》2015年第5期11-15,共5页Insulators and Surge Arresters

摘　　要：在人工污秽实验室内对积污绝缘子在盐雾环境下的污秽闪络进行了模拟,得到三种类型绝缘子在不同盐密、不同盐雾盐度下的污闪电压及闪络电压梯度。试验结果表明:盐雾对绝缘子闪络电压的影响远大于盐密;结合海南实际污秽情况与海水电导率,在高盐密下,绝缘子闪络电压下降不超过20%,而在高盐度下,绝缘子的污秽闪络电压会下降40%以上;由此证明在沿海地区,仅用等值盐密、灰密为依据进行外绝缘配置会使外绝缘配置不足,存在事故隐患。The experiments in artificial contamination laboratory have been taken to simulate contaminated insulators flashover under salt spray environment. Voltage and voltage gradient of contamination flashover of three kinds of insulators in case of different salt deposit density and different salinity of salt spray are gained. It proves that the impact of salt spray on insulators is much larger than the impact of salt deposit density. Considered the actual contamination situation and the seawater conductivity of Hainan, the flashover voltage of insulators drops less than 20% in high salt deposit density, and drops more than 40% in high salinity of salt spray. So if external insulation configuration only relies on equivalent salt deposit density and non-soluble deposit density, it would be inadequate and dangerous.

关 键 词：绝缘子 盐雾 等值盐密 人工污秽试验 污秽闪络电压 闪络电压梯度 

分 类 号：TM216[一般工业技术—材料科学与工程]