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

A technology of relay protection and process analysis, applied in the direction of electrical program control, comprehensive factory control, comprehensive factory control, etc., to reduce the risk of power outage, improve reliability, and eliminate potential safety hazards.

Active Publication Date: 2014-05-28
STATE GRID CORP OF CHINA +4
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  • Abstract
  • Description
  • Claims
  • Application Information

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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, s

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

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Embodiment Construction

[0045] The technical problem mainly solved by the present invention is to provide a method for online calculation and evaluation of relay protection performance indicators, which includes two steps of automatic extraction and calculation of online monitoring indicators and online evaluation of relay protection devices; wherein, the automatic extraction of online monitoring indicators The calculation process is as follows: firstly, according to the common communication function of the relay protection device, a time-related online detection index system is constructed; secondly, according to the set time interval, the detection index in the above online detection index system is calculated once, After accumulating for many days, a time series is formed, which is represented by ETj; the online evaluation process of the relay protection device is as follows: firstly, for the time series ETj, use a straight line to fit, and calculate the slope of the fitted line, normalize Afterwar...

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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...

Claims

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Application Information

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IPC IPC(8): G05B19/418
CPCY02P90/02
Inventor 姚建华俞京锋赵俊毛鸿飞阮远峰杨欢红温杰
Owner STATE GRID CORP OF CHINA
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