一种空中进行接地故障检测的方法和试验

A method and Test for Ground Fault Detection in the air

为了提高配网接地故障检测的效率,通过使用无人机平台代替人工检测,验证配电网接地信号源功能的有效性,对信号源信号持续性、稳定性进行了全面的入网前检测。结果表明,发生单相接地故障时信号源能够正确向线路注入特定序列的电流信号,并能根据线路不同进行频率调整,故障指示器能够在非接触情况下接收到线路广播信号。经过实际线路试验,来判定空中进行接地故障检测的方法是否具有正确性和有效性,以便进行深一步的技术研发。

In order to improve the efficiency of grounding fault detection in distribution network,the effectiveness of the functional performance of distribution network signal source is verified by using UAV platform instead of manual detection,and the signal continuity and stability of signal source are comprehensively detected before entering the network.The results show that in case of singlephase grounding fault,the signal source can correctly inject a specific sequence of current signals into the line,and the frequency can be adjusted according to different lines.The fault indicator can receive the line broadcast signal under non-contact conditions.Through the actual line test,to determine whether the method of ground fault detection in the air is correct and effective,so as to carry out further technical research and development.