高电压技术2012，Vol.38Issue(10)：2617-2622,6.
轻覆冰时憎水性对复合绝缘子的闪络电压的影响
Influence of Hydrophobicity on Composite Insulator's Flashover Voltage Under Light Ice Accumulation Conditions
摘要
Abstract
The icing flashover accident occurs on the composite insulator strings under light ice accumulation conditions.The performance of insulators deteriorates under light ice accumulation and wet contamination deposition conditions.In order to deeply investigate the impact of hydrophobicity on ice flashover performance,experiments of full-size composite insulators were carried out in artificial climate chamber using rise-voltage method.In our tests,the icing flashover voltage of composite insulator with good hydrophobicity was quite high,while icing flashover voltage of the composite insulator without hydrophobicity was lower than the contamination flashover voltage when they were both pre-contaminated with the same equivalent salt deposit density(ESDD).Hydrophobicity of composite insulators plays an important role in preventing the occurrence of flashover accident under light ice accumulation and wet contamination deposition conditions.Flashover under light icing conditions can be considered as one kind of pollution flashover and partial arcs are always developed along the surface of shed,thus increase creepage distance while keep the structure height constant is an effective way to prevent flashover in light icing condition.关键词
轻覆冰/冰闪/雾/复合绝缘子/湿污沉降/憎水性Key words
light ice/icing flashover/fog/composite insulators/wet contamination deposition/hydrophobicity分类
信息技术与安全科学引用本文复制引用
崔文军,苏华锋,李君明,王迪,孙震庭,贾志东..轻覆冰时憎水性对复合绝缘子的闪络电压的影响[J].高电压技术,2012,38(10):2617-2622,6.基金项目
国家自然科学基金 （）
国家重点基础研究发展计划（973计划） （）
国家“十一五”科技支撑计划 （）
