Automatic network reconstruction implementation method for power grid feeder line

Abstract

The invention relates to an automatic network reconstruction implementation method for a power grid feeder line, which is used for limiting a station outlet breaking condition in a power grid feeder line automatic system, the breaking conditions of feeder terminal units and the divide-shut brake and locking condition of an interconnection switch to reconstruct a power grid feeder line automatic network. Compared with the prior art, the method has the advantages that the judgment of fault coverage is realized by comparing current signal data of upper and lower adjacent equipment through the feeder terminal units; only equipment on both sides of fault segments are removed, so that circuits in non-fault segments are prevented from suffering from power outage; each feeder terminal unit works independently, and fault handling actions are rapid, so that the defects of poor reliability, slow fault positioning and isolation and high communication requirements existing in the conventional automatic feeder line system are overcome; and the method is easy and rapid for implementing, can contribute to realizing in-situ intelligent judgment of divide-shut brake and one-time divide-shut brake network reconstruction, has no impact on a system and low communication requirements, and can be implemented through general public network communication.

Description

technical field [0001] The invention relates to the field of power system distribution network automation, in particular to an implementation method for automatic network reconfiguration of power grid feeders. Background technique [0002] Feeder automation refers to the automation of feeder lines between substation outgoing lines and user electrical equipment. At present, there are mainly three feeder automation methods: the first is feeder automation based on the main station, the second is voltage-type feeder automation, and the third is feeder automation. The three are current-type feeder automation, and each of these three feeder automation methods has the following defects: [0003] Feeding automation method based on the master station: the master station collects information sent by all field devices, analyzes and judges the location of the fault, and automatically or manually sends remote commands to perform network reconstruction and adjustment. This method is highl...

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Problems solved by technology

[0004] Voltage-type feeder automation mode: Realize feeder automation by judging the presence or absence of voltage and performing corresponding functions. The implementation is simple, but the substation needs to modify the reclosing times more than 2 times, and each switch needs to be opened and closed multiple times to impact the system multiple times. The entire system completes in a short time long;

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