考虑污秽电流的避雷器在线监测系统的设计和应用

Design and Application of On-line Monitoring System for Lightning Arresters Considering Pollution Current

针对华安水电厂的几组避雷器尚未实现中控室实时监测和存储、故障报警,均需到现场监测其运行状态的问题,基于110 kV华城线(华高线、华新II路、华铁线、华城线)等四组线路避雷器和两组主变出口避雷器,以及两组室内GIS中避雷器的具体情况,通过传感器固定、信号线敷设、动作信号引入、监测站的安装调试等工作,进行持续泄漏电流、污秽电流及避雷器的动作次数在线监测系统的设计,并在实验室中以接收字符串信号的方式对在线监测系统进行了调试。

Several sets of lightning arresters in Hua′an Hydropower Plant have not yet achieved real-time monitoring and storage,and fault alarms in the central control room.They all need to monitor their operation status on site.Based on 110 kV Huacheng Line(Hua Gao Line,Huaxin II Road,Huatie Line,Huacheng Line)four sets of line arresters,two sets of main transformer outlet arresters,and two sets of indoor GIS lightning arresters,the on-line monitoring system for continuous leakage current,pollution current and action times of lightning arrester is designed through sensor fixation,signal line laying,action signal introduction,installation and commissioning of monitoring station,etc.The on-line monitoring system is debugged by receiving string signal in the laboratory.