220kV GIS SF_6 CT气室闪络分析  

Analysis of 220kV SF_6 Arc-Over Breakdown in CT Air Chamber

作　　者：裘吟君[1] 刘岩[1] 姜宏仁 姚唯建 周永言 陈锦清 钱艺华 

机构地区：[1]海南电力试验研究所,海南海口570203 [2]广东电力试验研究所,广东广州510600

出　　处：《南方电网技术》2007年第2期71-74,共4页Southern Power System Technology

摘　　要：通过常规与非常规化学、电气试验手段,对GISSF6CT气室中闪络故障前后固体粉末、气体成分及CT气室内的化工材料进行排查试验,证明频繁发生闪络故障的内置式CT气室内存在丁腈橡胶板,其腐蚀性硫与气室内触头等镀银件反应形成硫化银,最终形成导电通道,引起CT气室闪络击穿。By chemical and electrical experiments both conventionally and non-conventionally, thorough inspections are carried out on the solid powder, gas components and chemical materials in the CT air chamber before and after flashover faults. It is testified that butyronitrile rubber plate exists in CT air chamber with frequent flashover faults, the caustic sulphur in the plate reacted with silver-gilt items and produced silver sulphide, which is the cause of flashover in CT chamber.

关 键 词：SF6 分析 腐蚀 标准 

分 类 号：TM721.1[电气工程—电力系统及自动化] TM723