输电线路雷击故障点远程定位装置的设计

Design of the Remote Location Device for Lightning Strike Fault Point on Transmission Line

电力系统输电线路距离长、跨度大,受雷击的机率高,故障点不易确定,对设备的及时修复带来了很大困难,针对这一问题,笔者设计了输电线路雷击故障点远程定位装置。该装置基于GSM无线通信网络,以超低功耗单片机MSP430为控制单元,采用电流采集环和罗氏电流传感器,对输电线路上各绝缘子串进行实时监测,当被监测绝缘子串发生雷击闪络事故,该装置就会利用GSM无线网络以手机短信的形式将雷击点信息传输到监测中心及相关工作人员手机,从而代替了繁琐的人力检查,准确有效地对雷击故障点进行定位,给线路抢修抢险赢得宝贵时间,节约人力物力,减少经济损失,保障供电可靠性。

The long distance and large span of the power system transmission lines lead to its high risk of lightning stroke.Moreover it is difficult to fix the lightning fault point,which brings very great difficulty for equipment repair timely.In order to solve this problem,the paper presents the design of a remote location device for transmission line lightning fault point.The device is based on GSM wireless communication network and uses low power consumption MCU MSP430 as the control unit,adopting the current collection ring and Rogowski current sensor to monitor the insulator string on the transmission lines.If the lightning flashover accidents happened on the monitored insulator string,this device will transmit the information of lighting fault point to the monitoring center and mobile phones of related staff through GSM wireless network in the form of mobile phone short message,thus replacing the human inspection tour.This device can correctly and effectively locate the lightning fault point,which will win precious time for the emergent repairing of transmission lines,as well as save manpower and material resources.In addition,it can reduce the economic loss and ensure the reliability of power supply.