基于行波法的民用电力线路故障测距技术

Fault location technology of civil power line based on traveling wave

民用电力系统具有分支线路多、折反射复杂、反射行波信号较弱、故障行波信号难以捕捉和识别的特点,为了实现对民用电力线路的故障定位,本文提出了一种利用分支线路检测装置+主机接收装置+低压脉冲发生器的故障定位方法,分支线路检测装置可以检测各分支线路的状况并在故障发生时将故障信息发送给主机接收装置,主机接收装置可以在电脑界面上显示相应的故障信息和位置,低压脉冲发生器用于离线测量、提高测距精度,该套装置配合通用行波测距装置可以实现对民用电力线路故障的准确定位。

Civilian pow er system has many branch lines w hich lead to the refraction and reflection of the fault traveling wave are very complicated ,and the reflected traveling wave signal is weak and it is hard to capture and recognize the sig‐nal .In order to locate the fault ,this paper presented a method w hich utilize branch line detection device＋ host receiver＋low voltage pulse generator .T he branch line detection device can detect the branch lines and send the fault message to the host receiver ,and then the host receiver will display the fault message in the computer screen .The low voltage pulse generator is used to add a pulse signal to the lines after power off to resurvey and improve the accuracy .These devices can be worked cooperatively with the general traveling wave fault location equipment to realize the accurate fault location of civil pow er line .