Cable multimode safe operation evaluation method based on fuzzy analytic hierarchy process (FAHP)

A technology with fuzzy levels and safe operation, applied in data processing applications, instruments, calculations, etc., and can solve problems such as power outage losses

Active Publication Date: 2012-06-13
STATE GRID SHANDONG ELECTRIC POWER
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Problems solved by technology

Since power cables are mostly laid underground, once a fault occurs, it takes a lot of manpower, material resources and time to find the accident point, and it will cause incalculable power outage losses

Method used

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  • Cable multimode safe operation evaluation method based on fuzzy analytic hierarchy process (FAHP)
  • Cable multimode safe operation evaluation method based on fuzzy analytic hierarchy process (FAHP)
  • Cable multimode safe operation evaluation method based on fuzzy analytic hierarchy process (FAHP)

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Embodiment Construction

[0069] The present invention is further elaborated below by specific example, as figure 1 As shown, the specific steps of the evaluation method are as follows:

[0070] Establishment of power cable safety evaluation index system

[0071] Firstly, establish a safety evaluation model for power cables. Combined with the actual operation situation, this paper will adopt a three-tier evaluation index system, and establish the model as follows:

[0072]

[0073] The factors related to the safe operation of power cables mainly include cable surface temperature, partial discharge, ground current, ambient temperature, ambient humidity, and external force damage. In order to make the status evaluation indicators comprehensively and truly reflect the operating status of the cable, a status indicator analysis set as shown in the figure is established. The system divides index evaluation into three levels, target level N , the first-level evaluation index N i ( i =1,2,), the seco...

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Abstract

The invention relates to a cable multimode safe operation evaluation method based on a fuzzy analytic hierarchy process (FAHP). The evaluation method comprises the following steps of: establishing a power cable safety evaluation index system, establishing a power cable safety evaluation index comment set, and establishing a judgment matrix; judging matrix consistency check, and if the matrix does not meet consistency, returning the previous step; if the matrix meets the consistency, entering the next step; calculating a weight coefficient; and carrying out fuzzy comprehensive judgment, and determining an operating mode of the cable by maximum degree of membership. Multimode parameters are utilized to do safety evaluation on the operating mode of a power cable, and can relatively comprehensive evaluate system operation, and the evaluation method is simple and safe and reliable; and a cable multimode safe operation evaluation model is established based on the fuzzy analytic hierarchy process (FAHP) and can correctly do safety evaluation on a cable system, thereby being beneficial to finding out potential safety hazard existing in the power cable for staff in time, thus having a certain practical significance and a good development prospect.

Description

[0001] technical field [0002] The invention relates to a method for evaluating the running state of a power supply network, in particular to a method for evaluating cable multi-state safe operation based on a fuzzy analytic hierarchy process for real-time monitoring of power cables in a power supply network and a pipe network. Background technique [0003] As an important part of the power system, the power cable directly affects the safety and reliability of the power system. Since power cables are mostly laid underground, once a fault occurs, it takes a lot of manpower, material resources and time to find the accident point, and it will cause incalculable power outage losses. By mastering the operation status of the cable system, potential hidden dangers can be discovered in time, and it is convenient for the staff to take measures in advance to prevent accidents. Therefore, there is an urgent need to conduct safety assessments on the operating status of power cables. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/00G06Q50/06
Inventor 赵生传时翔陈志勇江川齐蔚海王华广董啸孙晓斌张利群牟磊徐强兰先明郝代涛郭英雷
Owner STATE GRID SHANDONG ELECTRIC POWER
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