SF_6电气设备放电故障检测和判断方法  

Detection and Judgment of Discharge Failures of Sulphur Hexafluoride Electrical Equipment

作　　者：庄贤盛[1] 李智[1] 姚唯建[1] 李翔 

机构地区：[1]广东省电力试验研究所,广州510600 [2]汕头供电局城东供电所,广东汕头515100

出　　处：《广东电力》2008年第12期35-38,67,共5页Guangdong Electric Power

摘　　要：根据SF6电气设备的放电特点,将SF6电气设备放电故障分为硬故障和软故障。通过分析SF6电气设备放电故障分解产物,确定了检测和判断SF6电气设备放电故障的特征组分为二氧化硫(SO2)和硫化氢(H2S),并提出把特征组分检测作为预防性常规检测项目。根据实践经验,分析、总结出SF6电气设备放电故障判断标准,包括注意值、故障值、严重故障值、特征组分体积分数比值和放电电流计算公式。According to the discharge characteristics of sulphur hexafluoride （SF6） electrical equipment, the discharge failures of SF6 electrical equipment is categorized as hard failure and soft failure. Upon analysis of the decomposition product of the discharge failure, the characteristic components for detecting and judging the discharge failures of SF6 electrical equipment are determined as sulfur dioxide （SO2） and sulfurated hydrogen （H2 S）. The detection of the characteristic components is also suggested to be a routine preventive detection item. The criteria for judging discharge failures of SF6 electrical equipment are analyzed and summarized based on practical experience, which include attention value, fault value, serious fault value, volume fraction ratio of characteristic components and calculating formula of discharge current.

关 键 词：SF6电气设备 放电故障 分解产物 特征组分 

分 类 号：TM855[电气工程—高电压与绝缘技术]