Method for realizing relay protection equipment on-line monitoring by use of communication process analysis

Abstract

The invention discloses a method for realizing relay protection equipment on-line monitoring by use of communication process analysis. The method comprises two steps i.e., automatic extraction and calculation by an on-line monitoring indicator and on-line assessment by a protective relaying device. Compared to a conventional transformer station integrated automation relay apparatus, the advantages are as follows: a communication capability is utilized, a characteristic of forming an automation communication network in concrete applications is utilized, a communication monitoring mechanism independent from an automation system is constructed, and function performance characteristic parameters which reflect health states of relay protection equipment are extracted in an on-line mode, such that on-line monitoring of the relay protection equipment can be realized.

Description

technical field [0001] The invention relates to the on-line monitoring technology of relay protection equipment. Background technique [0002] Condition-based maintenance is an important development direction of the current electrical equipment maintenance work mode reform. One of the key elements to realize condition-based maintenance is to realize the online monitoring and condition evaluation of electrical equipment status. In the power system, the online status monitoring technology and method of primary equipment (such as transformers, circuit breakers, capacitors, etc.) The intelligent equipment (IED) condition monitoring technology represented by integrated measurement and control devices has just started. At present, most of the main detection methods stay in the offline detection under power failure mode, such as using periodic or maintenance periods after failures, using specific detection methods. The instrument conducts off-line detection of the AC measurement s...

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide a method of using communication process analysis to realize on-line monitoring of relay protection equipment, reduce the work intensity of manually analyzing communication messages and evaluating performance defects of intelligent equipment, shorten working time and improve evaluation and judgment devices The accuracy of faults can effectively eliminate the potential safety hazards of intelligent equipment such as relay protection, reduce the risk of power outages caused by secondary equipment defects, and help improve the reliability of the power supply system

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