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Universal evaluation method for health index of power distribution equipment

A technology of power distribution equipment and health index, applied in the direction of electrical digital data processing, special data processing applications, instruments, etc.

Active Publication Date: 2016-04-13
CHINA ELECTRIC POWER RES INST +4
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the above-mentioned defects, the present invention provides a general evaluation method for the health index of power distribution equipment, which changes the long-term reliability research that only focuses on the results and causality of a single equipment at a certain moment, single cross-section (static state), and faults , to provide practical and novel technical means for the combination of macro and micro equipment management

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  • Universal evaluation method for health index of power distribution equipment
  • Universal evaluation method for health index of power distribution equipment
  • Universal evaluation method for health index of power distribution equipment

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Embodiment Construction

[0055] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0056] likefigure 1 As shown, a general evaluation method for the health index of power distribution equipment, combining gray theory, fuzzy analytic hierarchy process and evidence theory to construct a mathematical model, the method includes the following steps:

[0057] 1) Divide the state level, and obtain the key feature quantity that characterizes the health index of the power distribution equipment; wherein, the power distribution equipment includes transformers, switchgear, overhead lines and cable lines;

[0058] The health index HI of power distribution equipment is between [1,10]; 1≤HI≤2 is in good condition, 2<HI≤5 is in normal state, 5≤HI≤7 is in waiting state, and 7<HI≤10 is in good condition. failure state.

[0059] The method of obtaining the key characteristic quantity specifically includes, based on the...

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Abstract

The invention provides a universal evaluation method for a health index of power distribution equipment. A mathematic model is constructed in combination with a grey theory, a fuzzy analytical hierarchy process and an evidence theory. The method comprises: performing state grade division and obtaining key characteristic quantities representing the health index of the power distribution equipment, wherein the power distribution equipment comprises a transformer, a switchgear, an overhead line and a cable line; performing normalization processing on the key characteristic quantities of the power distribution equipment; obtaining weights of the key characteristic quantities of the power distribution equipment; generating a fuzzy comprehensive evaluation matrix of the power distribution equipment; performing evidence fusion on state grades of the key characteristic quantities; and obtaining the health index of the power distribution equipment. The method provides a practical and novel technical means for macroscopic and microcosmic combined equipment management.

Description

technical field [0001] The invention relates to an evaluation method, in particular to a general evaluation method for the health index of power distribution equipment. Background technique [0002] With the expansion of the power supply area of ​​the power grid, the risk of large-scale blackout accidents is gradually increasing. The fault prediction of power equipment based on condition-based maintenance is the basis for preventing potential faults in the power grid. Using the state information of existing power distribution equipment to accurately judge the health status of power distribution equipment, predict equipment failures, and arrange maintenance before failures can effectively ensure the safe operation of the power grid and reduce economic losses caused by power outages due to failures. [0003] In our country, online monitoring methods such as advanced sensor technology and optoelectronic technology have been widely used in the transmission network, which can ref...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F19/00
CPCG16Z99/00
Inventor 马钊袁海文孙凌杰周莉梅吕建勋左伟杰刘伟盛万兴苏剑王秋生刘颖异
Owner CHINA ELECTRIC POWER RES INST
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