Substation on-site protection system

Abstract

The invention discloses a substation on-site protection system, which comprises single-interval protection, cross-interval protection, substation area protection and an automatic monitoring device, and is characterized in that on-site single-interval protection and a public acquisition control terminal are configured at lines, bus couplers and subsections; each side of a substation is configured with the on-site public acquisition control terminal; the cross-interval protection protects a host according to bus and transformer configuration; the substation area protection and the automatic monitoring device performs centralized screen forming configuration in a control room; and the system network is composed of a cross-interval protection private ring network, a monitoring ring network anda public ring network. The substation on-site protection system adopts the on-site single-interval protection, the distributed cross-interval protection and the bidirectional ring network, solves a problem that an intelligent substation relay protection system is reduced in rapidity and reliability and can adapt to various installation occasions and operation environments at the same time.

Description

technical field [0001] The invention relates to the technical field of electric power system relay protection, in particular to an in-situ protection system for a substation. Background technique [0002] At present, smart substations generally adopt the system architecture of "three layers and two networks". New IED devices such as merging units and smart terminals have been widely used, and the installation methods have undergone major changes. While promoting the development of smart substations, it will bring secondary professional There are some new problems, mainly reflected in: more protection sampling and tripping links, lower speed and reliability; complex network structure, large number of switches; complex virtual circuit configuration of devices, high requirements for configuration interfaces and files; installation and debugging And maintenance workload is heavy. [0003] In recent years, GE has launched the HardFiberProcess Bus System, a substation process bus...

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to overcome the deficiencies in the prior art and provide an in-situ substation protection system, which adopts single-bay protection, distributed cross-bay protection and bidirectional ring network with vertically integrated functions to solve the problem of intelligent substation relay protection system. The problem of rapidity and reliability reduction, while adapting to a variety of installation occasions and operating environments

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