Research on Active Distribution Network Monitoring and Police Method of Substation Based on Fault Tree

Abstract

Substation is a power facility for transforming voltage, receiving and distributing power, controlling power flow and adjusting voltage in power system. After the active distribution network fails, it can effectively improve the power supply reliability of the distribution network by comprehensively utilizing the islanding operation ability of the standby contact line and the internal DG to restore the power supply for the outage load after the failure. Considering the main transformer fault and the timing characteristics of the DG output, the fault point is located in the shorter section between the intelligent bodies through the initial fault location. The fault secondary point is used to determine the fault point and the switch on both sides of the fault point is disconnected. Isolating the fault zone and restoring the power supply of the non-faulty section. It is an important technical measure to ensure that the voltage of each node in the power grid meets the required constraints, accurately locate the fault point, and ensure the reliable operation of the power grid.