基于LoRa物联网的输电铁塔雷击点远程实时监测系统研究

随着社会经济的快速发展,直接促进了远距离高压传输电网的建设,我国电力输电线路覆盖面积广、距离长、跨度大,经常遭受雷击事故,严重影响了电力系统的稳定运行。对雷击点进行准确定位并进行快速检修,能够在一定程度上提高输电线路运行可靠性。针对目前输电线路的雷击点监测定位精度不高、灵敏度不够及通信功耗高的问题,本项目提出一种基于LoRa物联网技术的输电铁塔雷击点远程实时监测系统。该系统通过在输电线路沿线的各个输电铁塔接地引线上安装电流监测单元,实现对雷击泄露电流波形数据的高速采集并通过LoRa通信模块无线传输到监控终端。所提出的输电铁塔雷击点远程实时监测系统具有定位准确、灵敏度高、通信功耗低、抗干扰性强、免维护、可长期在线运行等优点。

With the rapid development of social economy,the construction of long-distance high-voltage transmission network has been directly promoted.China's power transmission lines cover a wide area,long distance and large spanand thusoften suffer from lightning accidents,which seriously affects the stable operation of the power system.Accurate positioning of lightning strike points and rapid maintenance can improve the reliability of transmission line operation to a certain extent.In response to the problems of low accuracy,insufficient sensitivity and high communication power consumption of lightning strike point monitoring of transmission lines,this project proposes a remote real-time monitoring system of lightning strike point of transmission towers based on LoRa IoT technology.By installing current monitoring units on the grounding leads of each transmission tower along the transmission line,the system achieves high-speed acquisition of lightning leakage current waveform data and wirelessly transmits it to the monitoring terminal via LoRa communication module.The proposed transmission tower lightning strike point remote real-time monitoring system has the advantages of accurate positioning,high sensitivity,low communication power consumption,strong anti-interference,maintenance-free,and long-term online operation.