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Automatic extraction and calculation method for online monitoring indexes of relaying protection equipment

A technology of relay protection and calculation methods, applied in calculation, electrical digital data processing, instruments, etc., can solve problems such as shortening working time evaluation and judging device failures, and achieves the goal of eliminating potential safety hazards, improving reliability, and reducing the risk of power outages Effect

Inactive Publication Date: 2015-03-04
STATE GRID CORP OF CHINA +3
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Problems solved by technology

[0007] The technical problem to be solved by the present invention is to provide an automatic extraction and calculation method for on-line monitoring indicators of relay protection equipment, which reduces the work intensity of manual analysis of communication messages and evaluation of intelligent equipment performance defects, shortens working time and improves evaluation and judgment of device failures The accuracy can effectively eliminate the potential safety hazards of smart 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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  • Automatic extraction and calculation method for online monitoring indexes of relaying protection equipment
  • Automatic extraction and calculation method for online monitoring indexes of relaying protection equipment

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Embodiment Construction

[0026] 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 an automatic extraction and calculation method for online monitoring indexes of relaying protection equipment. The automatic extraction and calculation method comprises the following steps: firstly, by aiming at the common communicating function of the relaying protection equipment, building an online detection index system related to time; secondly, according to a set time interval, calculating detection indexes in the online detection index system one time, and accumulating the detection indexes for several days to form a time sequence, wherein the time sequence is represented by ETj. According to the automatic extraction and calculation method disclosed by the invention, by aiming at the traditional substation integrated automation relaying protection equipment, utilizing the characteristics of the relaying protection equipment which has communication capacity and forms an automation communication network in specific application, building a communication monitoring mechanism independent of an automation system and performing online extraction on functional performance characteristic parameters for reflecting the health status of the relaying protection equipment, online monitoring of the relaying protection equipment is realized.

Description

[0001] The patent application of the present invention is a divisional application of the invention title "A Method for Using Communication Process Analysis to Realize Online Monitoring of Relay Protection Equipment". The original application date is January 8, 2014, and the application number is 2014100091829. technical field [0002] The invention relates to the on-line monitoring technology of relay protection equipment. Background technique [0003] 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 m...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F19/00
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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