Fault detection method and system overhead distribution lines

The present invention discloses a method and system for fault detection overhead distribution lines, relates to detection techniques. To solve the existing overhead distribution line fault detected by real-time low. Comprising: a failure detection promoter, for detecting operating parameters of the line, the line fault condition is determined in accordance with operating parameters, when a line failure is detected, the operating parameters will be sent to the slave stations; sub-station for receiving three phase line fault reporting the detector operating parameters, operating parameters for fault detection on the detector fault reported by three-phase line, when detecting the failure of the three-phase lines, said master station transmits to a fault condition and a fault message ; master station, sub-station according to the reported fault message and a fault condition, in conjunction with the topology of overhead distribution lines to determine the position of failure, and displays the fault location and fault status. Technical solutions provided by the embodiments of the present invention can be applied to overhead distribution lines.