Using geographic information, facilities management and network topology of GIS, combined with the dynamic searching method and the backtracing approach of expert system, the fault regions can be located efficiently. 它充分利用了配电网GIS的地理信息、设备管理、网络拓扑结构.结合专家系统的规则库进行动态搜索、回溯推理,直到确定故障区域。