【摘要】 SF6气体大量应用于气体绝缘组合电器(GIS)中。通过化学方法检测SF6气体及其衍生物是检测GIS设备故障的一种重要方法。该文采用红外光谱技术分析了三种情况下的GIS设备内SF6气体组成情况,得出S2F10气体含量可以用来分析GIS故障原因是否为强火花或者电弧放电引起;CF4气体可以用来表征GIS设备内绝缘气体的绝缘状态。另外,研究表明,GIS设备在线运行时,绝缘气体气室密封失效、造成气体泄漏,引入新的气体杂质的问题比较严重。所以在进行GIS设备维护工作时,绝缘气室的密封维护工作十分重要。文章在研究GIS设备绝缘气体SF6红外谱图的基础之上提出了建立基于红外光谱技术的GIS设备故障诊断专家系统的意见。更多还原

【Abstract】 Pressured SF6 gas is widely used in GIS for electrical insulation as well as for arc extinction.And a chemical way for detecting the SF6 and its byproducts is a powerful diagnosis method for GIS.The present paper analyzes the decomposition of insulated gas of GIS(mostly SF6)in three cases with infrared spectrometer.As a result,it was found that the content of S2F10 can be used to decide whether spark or arc discharge leads to the fall down of GIS;CF4 can be used for judging the insulation grade of GIS.Besides,the gas leakage of the GIS should be concerned in the long lifetime of GIS.Finally,it is supposed that a data base containing the history of results from the gas diagnostics for each piece of equipment should be created for future maintenance activities.更多还原