基于GPRS技术的配电线路故障自动定位系统

为解决小电流接地系统线路故障,尤其是单相接地故障的自动定位问题,提出一种实现配电线路短路故障和单相接地故障快速自动定位的新方法。该方法通过检测过流现象判断相间短路故障,通过在中性点投入中电阻增加接地故障电流有功分量的方法实现单相接地故障的检测。故障检测信息通过通用分组无线业务(GPRS)无线通信网络上报至自动定位系统主站,主站自动定位分析软件根据各节点上报的故障检测信息,可以定位出故障所在区段。

Auto fault locating system for distribution feeders based on GPRS technique

An auto fault locating method is proposed for the feeder fault of small current grounding system,especially for the single-phase grounding fault.It detects the inter-phase short-circuit fault by checking the excess current,while the single-phase grounding fault by checking the fault current increment through the shunt resistance at system neutral point.The fault information is sent to the control center through the GPRS(General Packet Radio Service) communication network,based on which the fault location analysis software running in the master station locates faulty segment.