Composite insulator ageing state comprehensive evaluation method based on multi-characteristic vectors

A technology of composite insulators and aging states, which is applied in special data processing applications, instruments, calculations, etc., and can solve problems such as slow processing speed

Inactive Publication Date: 2017-12-26
WUHAN UNIV
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Problems solved by technology

However, the learning of its samples requires a process, so the processing speed w

Method used

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  • Composite insulator ageing state comprehensive evaluation method based on multi-characteristic vectors
  • Composite insulator ageing state comprehensive evaluation method based on multi-characteristic vectors
  • Composite insulator ageing state comprehensive evaluation method based on multi-characteristic vectors

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Embodiment

[0027] One, at first introduce method principle of the present invention, the present invention comprises the following steps:

[0028] Step 1, define the performance of the aging state of the composite insulator, including five categories: apparent state, hydrophobic performance, electrical performance, mechanical performance and other factors; take these five factors as the project layer, select appearance inspection, umbrella disc hardening, hydrophobicity 14 indicators, such as water increase mobility, leakage current, power frequency dry tolerance, steep slope impact, power frequency dry and wet flash, sealing performance, mechanical tolerance, mechanical damage value, service life, temperature and humidity, are used as the second layer of indicators layer; the 14 indicators corresponding to the index layer are feature quantities, and the evaluation results of each index are established according to actual needs. The comment set is the grade division of the overall state o...

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Abstract

The invention relates to a composite insulator ageing state comprehensive evaluation method based on multi-characteristic vectors. According to the method, the mathematical theory of fuzzy variable weights is introduced into state evaluation of composite insulators, parameters which comprehensively and accurately reflect the working states of the insulators are separately selected, an improved analytic hierarchy process (IAHP) is adopted, and opinions of an expert group are processed. On the basis of constant weights, data of the insulators is combined, and variable weights of all factors are determined. Before indexes are adopted to conduct state evaluation, all the indexes are subjected to normalization, quantitative data is transformed according to corresponding formulas, a scoring system is adopted for qualitative data, the score ranks from zero to one, the distribution function which combines half trapezoid and triangle is adopted to determine the membership degree, and the influence of all index quality on the insulator state is synthesized by adopting a multilevel fuzzy comprehensive evaluation method. According to the method, related state parameters are organically and comprehensively combined, the accurate and positive evaluation on the state of the insulators in running is made, and the method has the practical value.

Description

technical field [0001] The invention relates to a method for comprehensively evaluating the aging state of composite insulators, in particular to a method for comprehensively evaluating the aging state of composite insulators based on multiple characteristic quantities. Background technique [0002] At present, there are mainly five evaluation methods for the aging state of composite insulators, namely fuzzy reasoning method, expert system method, artificial neural network, support vector machine and fuzzy comprehensive evaluation. [0003] The fuzzy reasoning method is to use some strict mathematical methods to express and introduce some fuzzy problems or fuzzy concepts in the evaluation of the state of insulators using human thinking, so as to realize artificial intelligence imitation; the expert system method is based on the knowledge reasoning system, through Obtain a large amount of expert knowledge in a specific field to reason and answer the state of insulators; artif...

Claims

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Application Information

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IPC IPC(8): G06F19/00
CPCG16Z99/00
Inventor 刘启胜刘静雯唐佳
Owner WUHAN UNIV
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