Power distribution equipment state evaluation method based on variable weight and fuzzy comprehensive evaluation

A technology of fuzzy comprehensive evaluation and power distribution equipment, applied in the direction of instruments, data processing applications, resources, etc., can solve the problems that cannot correctly reflect the health status of equipment and have a large impact on equipment

Inactive Publication Date: 2020-02-11
GUIZHOU POWER GRID CO LTD
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Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a method for evaluating the state of power distribution equipment based on variable weight and fuzzy comprehensive evaluation, so as to solve the problem that...

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  • Power distribution equipment state evaluation method based on variable weight and fuzzy comprehensive evaluation
  • Power distribution equipment state evaluation method based on variable weight and fuzzy comprehensive evaluation
  • Power distribution equipment state evaluation method based on variable weight and fuzzy comprehensive evaluation

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specific Embodiment

[0097] The present invention will be described in detail below in conjunction with examples. Taking the test and inspection data of a medium-voltage cable line with a model of LSN10 / 3.1-3X9.5m in a power supply sub-bureau as an example, the corresponding membership degrees of various final states are calculated.

[0098] Step (1), select the evaluation index, the first-level index and the second-level index are shown in Table 3.

[0099] Table 3 Cable Line Parameters

[0100]

[0101]

[0102] In step (2), index weights are assigned for the first time. Using the Analytic Hierarchy Process, the first-level index judgment matrix of the cable body (A), cable terminal (B), cable intermediate joint (C), grounding system (D), cable channel (E), and auxiliary facilities (F) is as follows: Then the eigenvector with the largest eigenvalue is the initial weight of the cable body (A), cable terminal (B), cable intermediate joint (C), grounding system (D), cable channel (E), and ...

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Abstract

The invention discloses a power distribution equipment state evaluation method based on variable weight and fuzzy comprehensive evaluation. The power distribution equipment state evaluation method comprises the steps of 1, selecting evaluation indexes; step 2, index weight primary distribution: adopting an analytic hierarchy process, establishing a comparative judgment matrix by comparing the importance between every two evaluation factors, and finally calculating a feature vector under the maximum feature value to obtain the weight of each index; step 3, calculating the health state score ofeach index; step 4, weight redistribution: carrying out weight redistribution, wherein xi is the health state score value of the ith index; step 5, performing fuzzy decision index normalization processing; step 6, calculating a membership function; step 7, establishing a fuzzy evaluation matrix; step 8, determining an evaluation result by utilizing a membership degree maximum principle. The problem that in the prior art, when power distribution equipment is evaluated, other indexes with small weights cannot correctly reflect the health state of the equipment due to the fact that the indexes with large weights have too large influences on the equipment is solved.

Description

technical field [0001] The invention belongs to the field of power distribution equipment state evaluation, in particular to a power distribution equipment state evaluation method based on variable weight and fuzzy comprehensive evaluation. Background technique [0002] Power distribution equipment plays an important role in the distribution network, and the normal operation of power distribution equipment is related to the reliable and stable operation of the power distribution system. The function of condition evaluation is to correctly judge the operation status of the equipment, which is the first step in the implementation of condition-based maintenance, which can ensure the reliability of equipment operation and reduce maintenance costs. According to the existing equipment maintenance information, operation information, etc., it is the main function of the status evaluation to correctly evaluate the operation status of the equipment and timely discover the potential fa...

Claims

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Application Information

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IPC IPC(8): G06Q10/06G06Q50/06
CPCG06Q10/06393G06Q50/06
Inventor 王林波曾惜王元峰王冕王恩伟陈琪刘畅杨金铎王宏远周海肖小兵王之睿
Owner GUIZHOU POWER GRID CO LTD
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