摘要
六氟化硫(SF6)气体在电弧、电火花和电晕放电的作用下会发生分解,产生二氧化碳(CO2)、四氟化碳(CF4)等分解产物。SF6气体组分分析(可在设备带电状态下进行)是诊断SF6气体绝缘设备内部运行情况的一个强有力的手段,据此可判断设备是否故障,并确定故障的具体部位,近年来已有不少成功案例。探讨了GIS中典型放电性故障特征及相应的SF6气体分解产物和分解机理,给出了不同放电类型故障相关试验结果,并对最常见的电晕放电故障给出了放电量与分解产物的关系。在此基础上,归纳了不同放电故障下主要气体分解产物的反应方程,并应用于一起GIS故障分析,为GIS潜伏性故障及其故障类型判断累积经验。
SF6 gas decomposition may occur in the role of electric arc,sparks and corona discharge,and produce carbon dioxide（CO2）,four carbon fluoride（CF4）and other decomposition products.SF6 gas component analysis,which can be done in a electrification state）is a powerful method to diagnose the internal operation status of SF6 gas insulated equipment.It can determine whether the equipment fault has existed or not,and make sure the fault position.In recent years,there have been a lot of successful cases.The typical discharge fault characteristics in gas insulated swtchgear（GIS）,and the corresponding SF6 gas decomposition products and decomposition mechanism are dicussed.The relevant test results of different kinds of discharge failures are given.The relationship between the common corona discharge faults and decomposition products is pointed out.On this basis,the reaction equation of main gas decomposition products generating under different discharge faults are summed up.It was applied to a GIS failure analysis.The experience were accumulated for GIS potential faults and fault type judgement.
出处
《现代电子技术》
2013年第18期20-22,共3页
Modern Electronics Technique
关键词
组合电器
SF6分解物
故障诊断
绝缘设备
composite apparatus
SF6 decomposition product
fault diagnosis
insulated equipment
