SF_6混合绝缘气体电气设备中气体泄漏检测技术研究  

Research on Leakage Detection Technology for Electrical Equipment Insulated by SF_6 Mixtures

作　　者：程伟[1] 苏镇西[1] 马凤翔[1] 朱峰[1] 刘子恩[1] 王海飞[1] 刘添天[1] 

机构地区：[1]国网安徽省电力公司电力科学研究院国网公司六氟化硫气体特性分析与净化处理技术重点实验室,合肥230022

出　　处：《高压电器》2016年第12期146-150,共5页High Voltage Apparatus

摘　　要：《京都议定书》将SF_6气体列为限制排放的6种温室效应之一。为减少SF_6气体的使用量,采用SF_6/N_2和SF_6/CF_4混合绝缘气体作为SF_6替代气体是现实可行的,国内外已在部分设备中投入使用。目前,国内外关于SF_6混合绝缘气体电气设备泄漏检测技术的研究较少,现有SF_6检测技术能否直接应用于混合绝缘气体的检测是目前亟须解决的问题。文中以SF_6/N_2和SF_6/CF_4两种混合绝缘气体为试验对象,模拟不同混合比的混合绝缘气体在不同距离和风力等条件下的泄漏情况,利用红外成像仪等仪器进行检测,得出了仪器的检出限值,并提出检测的的最佳条件,证明SF_6泄漏检测技术可以应用于混合绝缘气体的现场检测,对于SF_6混合绝缘气体泄漏现场检测具有一定的指导意义。SF6 gas is regarded as one of the six greenhouse gases in Kyoto Protocol. In order to reduce the amount of SF6 usage, it has been shown to be feasible to use SF6/N2 and SF6/CF4 mixtures as SF6 alternatives and the mixtures have been used in some of the electrical equipment both domestically and abroad. There has been very little research on the detection technology of SF6 mixtures, and weather the detection technology of SF6 gas is applicable to SF6 mixtures is an issue that needs to be addressed. In this paper, we make SF6/N2 and SF6/CF4 mixtures as experimental subjects, simulate the leakage situations of SF6 mixtures with different mixing ratios at different distance and under different wind speed. Infrared camera is used to detect gas leakage and to obtain the detection limit of the instrument, thus defining the optimum detecting conditions. It has been shown that the leakage detection technology for SF6 gas can be used guidance for the on-site detection of SF6 mixture leakage to detect SF6 mixture leakage, which provides sensible

关 键 词：SF6混合绝缘气体 电气设备 泄漏检测 红外成像法 

分 类 号：TM507[电气工程—电器]