Distributed fast protection system and protection method for intelligent distribution network

Abstract

The invention provides an intelligent distribution network distributed rapid protection system. The system comprises multiple intelligent distribution terminals and an intelligent distributed fast communication network. Each of the intelligent distribution terminals comprises an adaptive distribution terminal data acquisition terminal calculation module installed to each distribution network node, an intelligent distributed rapid communication network with a channel function of supporting the interformation exchange between terminals, an intelligent distributed protection interface module with the function of carrying out real-time peer-to-peer communication with upstream and downstream data acquisition modules, an intelligent distributed protection strategy decision and outlet control module which realizes the function of adaptively analyzing and judging a fault type / area and rapid tripping outlet isolation fault in a branch or trunk line fault condition in an intelligent distribution network, and an intelligent information communication service and interface module which realizes remote control communication. The invention also provides a protection method based on the intelligent distribution network distributed rapid protection system.

Description

technical field [0001] The invention belongs to the technical field of intelligent distribution network, and in particular relates to a distributed fast protection system and protection method of an intelligent distribution network. Background technique [0002] Since the distribution network involves many users and covers a wide area, part of it goes deep into the city center and densely populated areas, there are many network branch nodes, and the topological structure is complex, the requirements for the stability of power distribution operation and power supply reliability are high. Higher requirements are placed on fast fault handling. [0003] Distribution lines are usually equipped with simple three-stage current protection, or inverse time current protection, but now in the power distribution system, especially on the line, multi-level switches are installed and operated in series, and it is difficult for the relay protection device using the traditional current prot...

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to solve the problem that the user’s power failure detection information, fault isolation, load transfer, etc. need to be manually processed by the dispatcher or the on-site operation of the power distribution staff is completed when the current distribution network equipment fails, and the protection action time and fault processing time are long. , which seriously affects the safe operation of the distribution network and the normal power consumption of other users, provides a method that can realize the isolation and restoration of power supply selectively in a few seconds without relying on the control of the distribution network dispatching master station, and satisfies the Important users have high requirements for power supply reliability, and a smart distribution network distributed fast protection system and protection method that improves the stability of distribution network operation and power supply reliability

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