Intelligent distributed feeder method and device based on 5G communication

Abstract

The invention discloses an intelligent distributed feeder method and device based on 5G communication. The device comprises at least one switching station comprehensive intelligent terminal, a feeder switch, and a distributed FA terminal, the distributed FA terminal is installed at the switching station comprehensive intelligent terminal and a power distribution terminal in an overhead line, and is used for detecting the electric signal and the on-off state information of the feeder switch, and the switching station comprehensive intelligent terminal forms an annular auto-negotiation communication channel through the 5G wireless data terminal, and is communicated with the distribution network automation master station through the 5G communication topology network. Communication between power distribution terminals and communication of a master station are realized by utilizing the technical characteristics of low time delay and high bandwidth of a 5G network, wireless communication interaction can be realized after a line fault occurs, positioning, isolation and power transfer of a fault section can be automatically completed, the defects of long isolation and removal time existing in traditional feeder protection can be overcome, meanwhile, differential protection based on optical fiber communication can be replaced, and laying of optical fiber lines in engineering construction is not needed.

Description

Technical field: [0001] The invention relates to the field of power supply and transformation, in particular to an intelligent distributed feeder method and device based on 5G communication. Background technique: [0002] Distribution line feeder automation (FA) mainly has three modes: centralized, local recloser and intelligent distributed. In the centralized type, the master station completes fault handling through information interaction with the power distribution terminal. There are many intermediate links, the master station centrally processes a lot of data, and has a high degree of dependence on the communication system; It takes a long time and needs the tripping of the substation outlet switch to cooperate. The whole processing process needs at least two overlaps, which increases the short-circuit impact and damage to the primary equipment; intelligent distributed does not require the intervention of the master station, and the fault processing is completed by mutu...

AI Technical Summary

Problems solved by technology

In the centralized type, the master station completes fault handling through information interaction with the power distribution terminal. There are many intermediate links, the master station centrally processes a lot of data, and has a high degree of dependence on the communication system; It takes a long time and needs the tripping of the substation outlet switch to cooperate. The whole processing process needs at least two overlaps, which increases the short-circuit impact and damage to the primary equipment; intelligent distributed does not require the intervention of the master station, and the fault processing is completed by mutual communication between the terminals. The fault processing time is short, the dependence on communication is low, and the operating pressure of the main station is reduced. It is the focus and hot spot of the FA technology research of distribution automation, and it is also the optimal means for distribution automation to improve the reliability of power supply.

[0003] At present, due to the difficulty of laying optical fibers and high cost of distribution network lines, it is difficult to implement the application of intelligent distributed fault processing. Local distributed fault processing still uses a large number of local reclosers, and the problem of long time for the entire fault processing process is more prominent.

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