A Method for Locating Grounding Faults in Multi Branch Distribution Lines Based on Single Terminal Measurement Points

In the context of the construction of intelligent distribution networks, in order to improve the reliability of power supply, when a ground fault occurs, it is necessary to intelligently determine the line where the grounding point is located and its branch location while the line is in a power supply state. The branch where the grounding point is located should be disconnected and separated from the distribution network, in order to restore the normal operation of other networks without faults and minimize the power outage area to the greatest possible. This paper analyzes and studies the traveling wave process in the multi branch network of distribution lines when a ground fault occurs, and combines the multi branch topology structure of distribution lines to establish a ground fault network location model. It proposes a ground fault location method based on single terminal and online electrical measurement for the entire multi branch distribution line, which shortens the query and location time of ground fault points, improves emergency repair efficiency and power supply reliability.