避雷器的常见故障及红外诊断  

Usual Failure and Infrared Diagnose of Arrester

作　　者：李庆玲[1] 程济兵[1] 张明智[1] 

机构地区：[1]兰州理工大学,甘肃兰州730050

出　　处：《电瓷避雷器》2007年第2期30-33,39,共5页Insulators and Surge Arresters

摘　　要：对运行中的避雷器进行在线红外诊断是电力设备带电诊断行之有效的技术手段。分析了FS、FZ、FCZ、FCD型避雷器和金属氧化物避雷器在正常状态和故障状态的发热特点,认为避雷器故障主要是受潮引起的,热像特征主要表现为局部温升。用红外热像仪对运行中的避雷器进行红外测温和故障分析,结果表明,应用红外诊断技术检测避雷器故障,可靠性较高。Line infrared diagnose on agnosing of power equipment. The thermal running arrester is an effective techno-measure for live-difeature of lightning arresters of FS, FZ, FCZ and FCD, and metal oxide surge arresters was analyzed when it is in normal and faulty condition and the basic method of failure detection. And it explain the elemental principle of infrared thermometer and in the end introduce the application of infrared diagnose. It is considered that the failure of surge arrester is caused mainly by moisture ingress which characterized by local temperature rise. Temperature inside surge arresters is measured in service with infrared thermometer and the service status being analyzed. The result shows that high reliability of surge arrester diagnose can be obtained using infrared technology.

关 键 词：避雷器故障 故障分析 红外测温 红外诊断 

分 类 号：TM862[电气工程—高电压与绝缘技术]