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Multi-level fuzzy comprehensive decision-making power distribution network risk assessment method

A fuzzy comprehensive evaluation and fuzzy comprehensive technology, applied in the field of distribution network risk assessment of multi-level fuzzy comprehensive decision-making, can solve the problems of qualitatively understanding the critical degree of risk, the large difference in the numerical range of risk indicators, and the difficulty of dispatchers. The effect of reliable evaluation, good usability and credibility

Inactive Publication Date: 2020-05-08
JIANGSU ELECTRIC POWER CO
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Problems solved by technology

However, under this definition, since the risk indicators are quantitatively displayed, the value ranges of different risk indicators are quite different.
Therefore, it is difficult for dispatchers to qualitatively understand the criticality of risks based on risk indicators

Method used

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  • Multi-level fuzzy comprehensive decision-making power distribution network risk assessment method
  • Multi-level fuzzy comprehensive decision-making power distribution network risk assessment method
  • Multi-level fuzzy comprehensive decision-making power distribution network risk assessment method

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Embodiment Construction

[0027] The application will be further described below in conjunction with the accompanying drawings. The following examples are only used to illustrate the technical solutions of the present invention more clearly, but not to limit the protection scope of the present application.

[0028] Such as figure 1 As shown, a multi-level fuzzy comprehensive decision-making distribution network risk assessment method of the present application includes the following steps:

[0029] Step 1: Analyze the risks in the classification system;

[0030] Step 2: Establish the factor set and comment set of the evaluation object;

[0031] Step 3: Calculate the probability and severity of each risk;

[0032] Step 4: Assess the comprehensive risk level of each subdivided risk;

[0033] Step 5: Bring in the membership function to obtain the membership matrix;

[0034] Step 6: Determine the weight of risk indicators at all levels;

[0035] Step 7: Use fuzzy operators to perform fuzzy comprehens...

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Abstract

The invention discloses a multi-level fuzzy comprehensive decision-making power distribution network risk assessment method. The method comprises the steps of analyzing risks in a classification system; establishing a factor set and a comment set of the evaluation object; calculating the occurrence probability and severity degree of each risk; evaluating the comprehensive risk level of each subdivision risk; substituting the membership function to obtain a membership matrix; determining the weight of each level of risk index; performing fuzzy comprehensive judgment by utilizing a fuzzy operator; output and display of results. According to the invention, reliable assessment of the risk of the power distribution network is realized, the characteristics of the novel active power distributionnetwork are better adapted, and detailed information of each risk can be reflected. Good practicability and credibility are realized.

Description

technical field [0001] The invention belongs to the technical field of distribution network risk assessment and relates to a distribution network risk assessment method for multi-level fuzzy comprehensive decision-making. Background technique [0002] The risk assessment of the distribution network is a comprehensive measure of the possibility of accidents and the consequences of accidents. Generally, this measure is quantitatively displayed in the form of risk indicators. Some literature defines the risk assessment value as the sum of the product of the probability and severity of each risk. . However, under this definition, since the risk indicators are displayed quantitatively, the value ranges of different risk indicators are quite different. Therefore, it is difficult for dispatchers to qualitatively understand the criticality of risks based on risk indicators. Contents of the invention [0003] In order to solve the deficiencies in the prior art, the application pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/06G06Q50/06G06F17/15G06F17/16G06N7/02
CPCG06F17/15G06F17/16G06N7/02G06Q10/0635G06Q10/06393G06Q50/06
Inventor 俞娜燕李向超费科丁晔武瑛
Owner JIANGSU ELECTRIC POWER CO
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