In-situ feeder fault processing method and system

Abstract

The invention discloses a local feeder line fault processing method and system, and belongs to the field of power distribution transmission. According to the in-situ feeder fault processing method, after the fault is detected, the in-station switch of the distribution line is triggered to trip, so that all section switches on the corresponding target line are controlled to be switched off; and then the in-station switch is switched on again, and the states of the section switches are controlled according to the positions of the section switches in the target line and based on the detected electric energy data on the two sides of each section switch on the basis of preset logic, so that fault points are isolated, power supply of non-fault sections is recovered, and normal power supply of the non-fault sections is ensured. According to the technical scheme, the in-station switch only needs to trip once, secondary tripping is not needed, the time for recovering power supply of a non-fault line is shortened, secondary power failure of the whole line is not needed, and the power utilization experience of a user is improved.

Description

technical field [0001] The invention relates to the field of power distribution and transmission, in particular to a method and a system for handling local feeder faults. Background technique [0002] With the rapid development of the economy, users have higher and higher requirements for power supply reliability. The distribution network feeder automation function plays an important role in quickly isolating faults and restoring power supply in non-faulty areas, and improving the reliability of distribution network power supply. The existing on-site feeder automation mainly adopts the voltage-time type, and the voltage-time on-site feeder automation adopts the working characteristics of "no voltage opening, incoming call delay closing" to cooperate with the secondary closing of the switch in the substation. Realization, when the feeder line fails, the switch in the station needs to trip twice to disconnect the entire line twice, the fault zone is determined by closing the ...

AI Technical Summary

Problems solved by technology

The existing on-site feeder automation mainly adopts the voltage-time type, and the voltage-time on-site feeder automation adopts the working characteristics of "no voltage opening, incoming call delay closing" to cooperate with the secondary closing of the switch in the substation. Realization, when the feeder line fails, the switch in the station needs to trip twice to disconnect the entire line twice, the fault zone is determined by closing the switch in the station for the first time, and the power supply of the non-fault line is restored by closing the switch in the station for the second time, and the power failure range Large, time-consuming, affecting the user's use

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