Method for controlling fault self-recovery of power distribution switching station

Abstract

A method for controlling fault self-recovery of a power distribution switching station belongs to the field of automation of electric system and includes a fault isolation step and a power restoration step. A main unit intelligently judges time limit, sequence and feasibility of a reclosure tripping unit according to electricity and switch state information of auxiliary units during fault after collecting fault and protection data from the auxiliary units and superposes the same in the manner of superposition of the auxiliary units or standby master and branch units; the logic algorithm set in the main unit comprises line inlet superposition conditions, line outlet superposition conditions, line inlet reconstructing conditions, automatic standby switching conditions and line outlet superposition conditions, is started according to the protection information and electricity of the auxiliary units acquired by the main unit, and quick power restoration of non-faulty circuits after faults is realized. By the aid of the method for controlling fault self-recovery of the power distribution switching station, running modes of a switching station (a ring main unit) can be controlled automatically, fault isolation and power restoration can be realized, and reliability, safety and economization of power supply are improved.

Description

technical field [0001] A fault self-healing control method for a power distribution system belongs to the field of power system automation, and in particular relates to a fault self-healing control method for switch stations, switching stations, and ring network cabinets. Background technique [0002] With the development of the economy, power consumers have put forward higher requirements on the reliability of power supply. At present, power distribution monitoring devices are generally installed in switching stations (ring network cabinets) within the jurisdiction of domestic power supply departments, but these power distribution monitoring devices do not have fault protection functions. When a line fails, it can only be protected by tripping out of the substation. The power distribution terminal then sends the fault information to the main station, and the main station collects various information to determine the fault section and notify the management personnel to deal ...

AI Technical Summary

Problems solved by technology

At present, power distribution monitoring devices are generally installed in switching stations (ring network cabinets) within the jurisdiction of domestic power supply departments, but these power distribution monitoring devices do not have a fault protection function. When a line fails, it can only be protected by tripping out of the substation. The power distribution terminal then sends the fault information to the main station, and the main station collects various information to determine the fault section and notify the management personnel to deal with the fault

This fault handling method takes a few minutes, and cannot isolate the faulty area in a short time, prolongs the power restoration time, and cannot distinguish between permanent faults and transient faults

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