合成绝缘子鸟粪闪络与不明原因闪络  

COMPOSITE INSULATOR FLASHOVERS CAUSED BY BIRD DROPPING AND UNKNOWN REASONS

作　　者：梁曦东[1] 黄崚[1] 王绍武[1] 陈震[1] 王黎明[1] 

机构地区：[1]清华大学电机系,北京100084

出　　处：《电网技术》2001年第1期13-16,共4页Power System Technology

摘　　要：在人工模拟鸟粪闪络现象的基础上 ,对鸟粪闪络机理及闪络条件进行了研究。发现鸟粪闪络主要是空气间隙在瞬间电场畸变情况下的击穿 ,而不是以往认为的沿面闪络。在以往认为的不明原因闪络中 ,有相当一部分实际上是属于鸟粪闪络 。Based on the successful simulation of flashover caused by bird dropping, the mechanism of this kind of flashoverandtheflashoverconditions arestudied in this paper. It is found that the flashover caused by bird dropping is that the breakdown strength of the electric field of insulator at the air gap is suddenly changed where bird excrement drops, but not theflashoveralong theinsulator surface as previously assumed. Actually, inmanypreviouscasesof unknown reason flashover a considerable number could be attributed to bird droppings. The anti\|flashover method is also discussed.

关 键 词：鸟粪闪络 不明闪络 试验 合成绝缘子 输电线路 

分 类 号：TM216.06[一般工业技术—材料科学与工程] TM726[电气工程—电工理论与新技术]