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Electric transmission line comprehensive risk evaluation method based on TOPSIS and optimal combination weight

A transmission line, optimal combination technology, applied in multi-objective optimization, electrical digital data processing, design optimization/simulation, etc., can solve the problems of complex model structure, many influence coefficients, large changes, etc., to achieve simple calculation process and evaluation. Scientific results, easy to implement effect

Inactive Publication Date: 2018-02-27
HUIZHOU POWER SUPPLY BUREAU OF GUANGDONG POWER GRID CO LTD
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Problems solved by technology

The disadvantage of this method is that the model structure is complex, which is not convenient for specific implementation, and the fuzzy relationship is used to determine the risk level of the line, which cannot accurately reflect the comprehensive risk strength of each transmission line.
The disadvantage of this method is that only the ratio of the number of historical trips to the total number of trips of the line is used as the risk probability, which has a large error in evaluating the comprehensive risk of the line, and the quantification of the risk consequences requires a large number of artificially set influence coefficients. Compared with the change of risk probability, the comprehensive risk value obtained will have a large change due to the quantitative value set subjectively, and the risk difference between transmission lines cannot be accurately identified

Method used

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  • Electric transmission line comprehensive risk evaluation method based on TOPSIS and optimal combination weight
  • Electric transmission line comprehensive risk evaluation method based on TOPSIS and optimal combination weight
  • Electric transmission line comprehensive risk evaluation method based on TOPSIS and optimal combination weight

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[0050] The accompanying drawings are for illustrative purposes only, and should not be construed as limitations on this patent; in order to better illustrate this embodiment, certain components in the accompanying drawings will be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art It is understandable that some well-known structures and descriptions thereof may be omitted in the drawings. The positional relationship described in the drawings is for illustrative purposes only, and should not be construed as a limitation on this patent.

[0051] like figure 1 As shown, a comprehensive risk assessment method for transmission lines based on TOPSIS and optimal combination weights includes the following steps:

[0052] S1: Obtain the trip statistics of each line in recent years, and calculate the average trip rate of each line under the conditions of lightning strike, strong wind, ice, bird damage, wildfire and external d...

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Abstract

The invention relates to the technical field of electric system risk evaluation, in particular to an electric transmission line comprehensive risk evaluation method based on TOPSIS and optimal combination weight. The electric transmission line comprehensive risk evaluation method based on the TOPSIS and optimal combination weight overcomes the defects in the prior art, and the electric transmission line comprehensive risk evaluation method is perfected.

Description

technical field [0001] The invention relates to the technical field of power system risk assessment, and more specifically, relates to a comprehensive risk assessment method for transmission lines based on TOPSIS and optimal combination weights. Background technique [0002] As the global climate changes, extreme natural disasters have more frequent impacts on the power system. According to statistics, the overhead transmission lines of the power grid have suffered from lightning strikes, strong winds, icing, bird damage, pollution, wildfires, mudslides, landslides and subsidence. The frequency of failures due to natural disasters is increasing year by year. At present, the situation for the safe and stable operation of transmission lines under severe natural disasters is becoming more and more severe. Although many institutions at home and abroad have carried out research on risk assessment methods for transmission lines under different meteorological disasters, most of the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCG06F30/20G06F2111/06
Inventor 陈涛威朱凌张素明陈峰
Owner HUIZHOU POWER SUPPLY BUREAU OF GUANGDONG POWER GRID CO LTD
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