Fault isolation simulation of distribution network based on VDNAP

This paper expounds the establishment mechanism and realization method of distribution network analysis platform VDNAP (visual distributed network analysis platform) based on geographic information systems relatively deeply, presents a new fault-point search location algorithm - reverse search method, that´s make the search direction carryied through and maintain the reverse direction to the flow of current. Through the connection relation between nodes and devices and circuits to search and then get the impedance value from root node to short-circuit node and provide the basis for the line setting calculations and network reconfiguration and so on. Finally, using the method and an example to carry out fault isolation simulation of distribution network in the VDNAP, operation process are graphical, visual, convenient and fast.