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Improved fuzzy triangle number-based high-voltage cable construction defect grading method

A technology of fuzzy triangular numbers and high-voltage cables, applied in character and pattern recognition, instruments, calculations, etc., can solve the problems of not reflecting the importance of data, filtering, etc., and achieve the effect of convenient expansion of defect database and guaranteed reliability

Active Publication Date: 2017-05-24
WUHAN UNIV
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Problems solved by technology

However, when the traditional fuzzy hierarchy method synthesizes the evaluation opinions of multiple experts, it takes a single arithmetic mean value for the established fuzzy judgment matrix to calculate the weight of the evaluation index, which cannot reflect the importance of each data, causing the unique insights of some experts to be ignored. filter

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  • Improved fuzzy triangle number-based high-voltage cable construction defect grading method
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  • Improved fuzzy triangle number-based high-voltage cable construction defect grading method

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Embodiment

[0035] Below is the step that adopts the specific embodiment of the present invention, as follows:

[0036] 1. Establish fuzzy relationship matrix

[0037] In the embodiment of the present invention, the evaluation index refers to the four evaluation indexes used to evaluate the degree of difficulty of defects obtained by expert consensus: Q 1 (hidden danger), Q 2 (degree of protection), Q 3 (Completeness), Q 4 (aesthetics).

[0038] Under the same criterion, let each expert compare the relative importance of any one evaluation index with the remaining three evaluation indexes to obtain the expert's judgment result; Triangular fuzzy number M of indicators ij =(l ij ,m ij ,u ij ) (where i=1,...N, j=1,...N), the membership function of M is

[0039]

[0040] In the above formula, m is the median value of M with a membership degree of 1, which represents the average evaluation by an expert on the relative importance of any two evaluation indicators. When x=m, x complet...

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Abstract

The invention relates to a high-voltage cable construction defect grading method, in particular to an improved fuzzy triangle number-based high-voltage cable construction defect grading method. Before construction defects are injected in a simulation training system, each construction defect is subjected to grade evaluation according to the method. Four new evaluation indexes are added as evaluation standards on the basis of considering expert experience; an improved fuzzy analytic hierarchy process is taken as a framework; the consensuses of all evaluation experts are integrated by integrating triangular fuzzy numbers, thereby establishing fuzzy weights of the evaluation indexes and prevent unique insights of part of the experts from being filtered; then non fuzzy weights are solved by using a gravity center method, thereby avoiding influence of subjectivity of the experts on the evaluation indexes in defect grade evaluation; quantified construction defect data is obtained through scores of the experts; an objective and practical grading method is provided for an enterprise decision maker; the grading effect is relatively ideal; and powerful decision support is provided for selection of student training difficulty.

Description

technical field [0001] The invention relates to the field of electric power system safety production, and in particular designs a method for grading construction defects of high-voltage cables. Background technique [0002] High-voltage cable construction is a key link in my country's electric power construction. The operator's familiarity with the defects of different degrees of difficulty in the construction process and the ability to solve faults will greatly affect the risk factor of high-voltage cable construction. Therefore, the high-voltage cable construction simulation training system must be able to accurately classify construction defects to adapt to students at different levels, which is of great significance to the safe operation of high-voltage cable construction. [0003] How to scientifically and objectively evaluate each construction defect and minimize subjective judgment has become a difficult problem for enterprise decision makers. For the classification ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/62
CPCG06F18/23G06F18/2413
Inventor 龚庆武杨安琪乔卉
Owner WUHAN UNIV
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