双端主动式行波故障定位方法的研究

提出了一种高压输电线双端主动式行波故障定位方法,该法采用高精度GPS同步技术和高速数据采集与检测技术,当输电线有故障时,在继电保护装置切除线路前,由故障线路两端向线路的故障点发射探测波,高速采集检测、计时线路回波,再结合高速双端探测技与合成波的折、反射分析以及干扰波的识别技术计算和分析以准确定位故障。该法抗干扰能力较强,可靠性和灵活性更好。

Study on Initiative Travelling Wave Fault Location Technique for High Voltage Transmission Line

In this paper, a new double ends initiative travelling wave fault location technique for high voltage line is presented. This technique uses the high precision GPS synchronization, the high speed data acquisition and checking techniques. When there is fault on the line, the fault location system sends out detection waves to the fault point from its both ends, then collects, checks and times the e-choes quickly before the tripping protection cuts off the line. The refraction and echo analysis technique of detection waves and compound waves and the disturbance wave distinguishing technique are used to analyze the data. At last, the fault location will be located comparatively exactly. This technique has quite strong anti-interference ability, reliability and flexibility.