配电网故障自动定位技术研究综述

Survey of fault location technology for distribution networks

根据已有的研究成果,对配电网故障自动定位技术研究涉及的主要内容,即故障选线、区段定位、故障测距进行了综述。故障选线是为了识别判断母线多条出线中的故障线路,其主要包括:基于外加注入信号的故障选线,基于故障稳态量、暂态量和综合式故障选线等。区段定位旨在迅速隔离故障并恢复非故障区域供电,主要研究包括:基于现场设备采集的故障实时信息、基于故障投诉电话等定位方法以及故障特征微弱时的故障识别判断。故障测距的目的是直接定位出故障位置,其主要包括:注入法故障测距、基于稳态量故障测距和基于暂态量故障测距。结合配电网故障自动定位技术及最新研究成果,对其发展方向进行了展望。

A survey of fault location technology for distribution networks is introduced based on existing research results,including faulty line selection,faulty section location and fault distance detection. The faulty line selection is used to distinguish the faulty one among multiple feeders and it is mainly based on the additional signal injection,the fault fundamental component,the fault transient component or the synthetic signals. The faulty section location is used to quickly isolate the faulty area for power recovery and it is mainly based on the real-time fault information uploaded from field devices,the trouble call or the weak fault characteristic detection. The fault distance detection is used to directly determine the fault location and it is mainly based on the signal injection,the fault fundamental component or the fault transient component. Combined with the key technologies of,..automatic fault location and its latest research achievements,its development trend is prospected.