自供能雷电流监测系统设计  

Design of Self-powered Lightning Current Measurement System

作　　者：杜林[1] 罗宇鹰 刘军[3] 

机构地区：[1]重庆大学输配电装备及系统安全与新技术国家重点实验室,重庆400030 [2]国网重庆江津供电公司,重庆402260 [3]国网重庆市电力公司检修分公司,重庆400039

出　　处：《高电压技术》2014年第5期1306-1311,共6页High Voltage Engineering

基　　金：国家重点基础研究发展计划(973计划)(2012CB215205);输配电装备及系统安全与新技术国家重点实验室自主研究资助项目(2007DA10512712201)~~

摘　　要：为向输电线路雷击大电流测量装置提供稳定可靠的电源,基于电磁感应原理设计了一种自供能雷电流监测装置,在雷电流入地通道（杆塔、避雷针、接地引下线）上安装信号线圈和取能线圈,当取能单元被雷电流触发后,即开始获取雷电流电磁能量,同时,信号线圈将对雷电流极性和峰值进行采样和存储。通过理论推导并借助Saber软件,最终确定取能和信号线圈的结构,并合理选取其尺寸等参数。研究结果表明,前置取能线圈能够通过连接相应的电能适配电路,向负载电路进行稳定供能。雷电流传感器能够对幅值介于10～200 kA之间的雷电流进行线性测量。In order to ensure the stable and reliable power supply for lightning current monitoring device of transmission lines, we proposed a self-powered lightning current monitoring device based on electromagnetic induction. Power harvesting coils and signal coils are installed in the lightning current channel including transmission lines towers, lightning rods, and lightning arrester grounding wires.When the power harvesting unit is activated by lightning current, the peak value and its polarity will be sampled and stored by signal coils in the meantime. Through theoretical deduction and numerical analysis by the Saber software, we eventually determined the appropriate structure and respective parameters of power harvesting coils and signal coils such as the geometry dimension. Further experiments indicate that, via subsequent power adapting circuits, the power coils can support load steadily, and the lightning current sensor can linearly measure lightning currents within 10 ～200 kA.

关 键 词：雷电流监测 信号线圈 取能线圈 信号调理 自供能 供能电路 

分 类 号：TM863[电气工程—高电压与绝缘技术]