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A method for determining the weight of an uninterrupted line based on a variable entropy weight method

A technology of blackout lines and entropy weight method, which is applied in the field of power distribution network, can solve the problems of lack of scene application and achieve the effect of avoiding influence, improving reliability level and eliminating subjective factors

Inactive Publication Date: 2019-02-12
STATE GRID ZHEJIANG ELECTRIC POWER CO LTD SHAOXING POWER SUPPLY CO
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Problems solved by technology

[0003] However, this article only involves the overall idea of ​​the variable entropy weight method, and lacks specific scene applications.

Method used

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  • A method for determining the weight of an uninterrupted line based on a variable entropy weight method
  • A method for determining the weight of an uninterrupted line based on a variable entropy weight method
  • A method for determining the weight of an uninterrupted line based on a variable entropy weight method

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Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0035] According to the scoring rules, each index of the line in a certain area is scored, as shown in Table 1.

[0036] Table 1 Scores of various indicators in the evaluation of non-power supply operation in a certain place

[0037]

[0038]

[0039] Through weight calculation, the comprehensive weight of indicators is obtained as shown in Table 2.

[0040] Through the calculation of constant entropy weight: the normalized index value is obtained

[0041]

[0042]

[0043] Its index information entropy is

[0044]

[0045]

[0046]

[0047]

[0048] Variable Entropy Weight: Expert Deviation Weight

[0049] 0.211 0.193 0.055 0.203 0.100 0.123 0.077

[0050] The variable entropy weight has obtained each weight value, and the weight adjustment value can make the weight result converge quickly, eliminate the subjective factors of the expert, and make the weight result more accurate

[0051] Calculate expert weight adjustment value by formula

[0052] ...

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Abstract

The purpose of the patent of the invention is to make up for the deficiency of the prior art, and provides a method for determining the weight of an uninterrupted line based on a variable entropy weight method. To achieve the purpose, the method for determining the weight of the uninterrupted line based on the variable entropy weight method of the invention comprises the following steps of 1 establishing a power distribution uninterrupted work evaluation decision expert database; 2 obtaining a de-dimensioning standardized score matrix Hv. U; 3, calculating a constant entropy weight, and pre-processing the de-dimensioning standardized score matrix Hv. U by adopting a normalization method; 4, calculating the difference entropy weight; 5, calculating the variable entropy weight; 6, through the calculation, obtaining the adjusted evaluation result according to the variable entropy weight. The variable entropy weight method of the invention obtains the entropy weight of the representative weight completely according to the decision matrix, and can effectively avoid the influence of the subjective judgment error of the expert on the weight analysis. The combination of constant entropy weight and deviation weight can make the weighted results converge quickly, eliminate the subjective factors of individual experts, and improve the reliability of the evaluation results.

Description

technical field [0001] The invention relates to the technical field of electric power distribution network, in particular to a weight determination method for non-stop power lines based on variable entropy weight method. Background technique [0002] As the distribution network setup becomes more and more complex, electric power practitioners need to design different technical solutions to meet different work requirements. Research on comprehensive evaluation method of emergency capacity of distribution network based on variable entropy weight method. It is mentioned in the paper that in order to accurately reflect the emergency capability level of distribution network, a comprehensive evaluation method of emergency capability based on AHP-variable entropy weight method is proposed. Analyze the emergency technical characteristics of the distribution network, use the Analytic Hierarchy Process (AHP) to establish an evaluation index system, and introduce the variable entropy ...

Claims

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Application Information

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IPC IPC(8): G06Q10/06G06Q50/06
CPCG06Q10/06393G06Q50/06
Inventor 徐云炯唐琳玲孙雯殷常斌虞佳琴郭佳杰祝武桥杨明佳王华昕李珂
Owner STATE GRID ZHEJIANG ELECTRIC POWER CO LTD SHAOXING POWER SUPPLY CO
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