架空输电线路隐患在线监测方案研究

Study on On-Line Monitoring Scheme for Hidden Dangers of Overhead Transmission Lines

随着行波法故障测距稳定性以及成熟性的不断提升,故障时刻行波信号中包含的其他信息正逐步被挖掘。从行波法故障测距角度出发,利用行波故障测距原理,结合宽频带传感器以及隐患预警系统算法判定输电线路中是否存在隐患放电情况,开发了一套架空输电线路隐患监测系统。该系统基本可实现架空输电线路的隐患预警,从而辅助输电线路现场运维人员进行故障排查,减小输电线路因隐患发展成故障跳闸。

With the continuous improvement of stability and maturity of fault location using traveling wave method,other information contained in traveling wave signal at fault time is gradually excavated.From the perspective of fault location using traveling wave method,a hidden danger monitoring system for overhead transmission lines by using the principle of traveling wave fault location was proposed,and the main organization structure and key measurement technology of the system was introduced.Combined with the broadband sensor and the hidden danger warning system algorithm to determine whether there is hidden danger discharge in the transmission line,the system can basically realize the hidden danger warning of overhead transmission lines,so as to assist the on-site operation and maintenance personnel of the transmission line to troubleshoot and reduce the electric energy caused by the development of hidden dangers into fault tripping of the transmission line.