用变频信号进行超高压输电线路故障诊断初探

Investigation of Fault Diagnosis with Frequency varying Signals for EHV Transmission Lines

基于波动方程、利用外加变频诊断信号对超高压输电线路故障进行诊断，可以克服自动重合闸的盲目性，并对永久性故障进行准确定位。仿真计算表明，该方法具有较高的精度。

This paper presents a new method based on wave equations to diagnose EHV transmission line fault using frequency varying signals. This method can avoid the blindness of auto reclosing and provide precise fault location. Software simulation shows that this method has high accuracy.