Unlock instant, AI-driven research and patent intelligence for your innovation.

A distributed protection method and system

A protection system and distributed technology, applied in emergency protection circuit devices, circuit devices, electrical components, etc., can solve problems such as low data transmission efficiency, prevent protection malfunction, improve reliability, and ensure stable and reliable operation. Effect

Active Publication Date: 2020-08-11
XUJI GRP +2
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a distributed protection method and system for solving the problem of low data transmission efficiency among various protection devices in the prior art

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A distributed protection method and system
  • A distributed protection method and system
  • A distributed protection method and system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0031] The specific embodiment of the present invention will be further described below in conjunction with accompanying drawing:

[0032] The invention provides a distributed protection system, which includes a control module and at least two protection sub-machines. The protection CPU and the starting CPU of each protection sub-machine are respectively connected through a bidirectional protection ring network and a bidirectional starting ring network. The protection CPU of the protection machine obtains the data of the smart substation collected by the protection CPU of other protection slaves through the bidirectional protection ring network, and the startup CPU of each protection slave obtains the data of the smart substation collected by the startup CPU of other protection slaves through the bidirectional startup ring network. Data; the control module judges the absolute deviation and relative deviation of the data amplitude of the intelligent substation collected by the p...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention provides a distributed protection method and system. Each protection sub-computer obtains data of intelligent substations collected by protection CPUs and starting CPUs of other protection sub-computers through a bi-directional protection ring network and a bi-directional starting ring network respectively. At the same time, the sampled data of the protection CPUs and the start CPUsare compared in consistency; if the comparison result is abnormal, the protection outlet related to the abnormal data is blocked; If the comparison result is normal and the protection operation logicand the protection start logic simultaneously meet the set conditions, a differential protection operation outlet is opened. The invention improves the reliability of the data transmission and ensuresthat the data is not lost in the transmission process by connecting each protection sub-computer through the bi-directional protection ring network. The method and the system also improve the reliability of differential protection operation and the correctness of the outlet action of the protection device, prevents the malfunction of the protection device caused by the damage of a single component, and ensures the stable and reliable operation of the intelligent substation.

Description

technical field [0001] The invention belongs to the technical field of electric power system relay protection, and in particular relates to a distributed protection method and system. Background technique [0002] The relay protection device is an important part of the power system, and it plays an important role in ensuring the safe operation of the system. With the acceleration of changes in the needs of power companies, the State Grid Corporation has summarized the operation of the protection and control equipment of smart substations in recent years, combined with the test results of the China Electric Power Research Institute's network test, and requires the safety and reliability of the relay protection system, especially the single The situation where the requirement that the damage protection of components cannot be malfunctioned cannot be satisfied must be resolved. Therefore, the third-generation smart substation characterized by in-situ protection is developing r...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): H02H7/22H02J13/00
CPCH02H7/22H02J13/0017
Inventor 邓茂军倪传坤李瑞生金全仁李宝伟李旭马和科王智勇吕利娟陈继瑞席颖颖
Owner XUJI GRP