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Power grid forest fire and icing disaster safety evaluation method based on fuzzy comprehensive evaluation approach

A fuzzy comprehensive evaluation and fuzzy evaluation technology, applied in instruments, data processing applications, forecasting, etc., can solve problems affecting the stable operation of power grids, reducing power supply reliability, transmission line tripping, etc., to prevent catastrophic accidents, easy operation, The effect of strong recognition

Inactive Publication Date: 2016-09-21
STATE GRID HUNAN ELECTRIC COMPANY DISASTER PREVENTION & REDUCTION CENT +1
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Problems solved by technology

[0004] Mountain fires and ice-covered disasters cause transmission lines to trip, which in turn has an impact on the power grid, affecting the stable operation of the power grid, and even causing large-scale power outages, reducing the reliability of power supply

Method used

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  • Power grid forest fire and icing disaster safety evaluation method based on fuzzy comprehensive evaluation approach
  • Power grid forest fire and icing disaster safety evaluation method based on fuzzy comprehensive evaluation approach
  • Power grid forest fire and icing disaster safety evaluation method based on fuzzy comprehensive evaluation approach

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Embodiment Construction

[0026] The implementation will be described in detail below in conjunction with the accompanying drawings.

[0027] The present invention proposes a safety evaluation method for power grid mountain fire and icing disasters based on fuzzy comprehensive evaluation method, such as figure 1 shown, including:

[0028] S1. Correctly select the evaluation indicators of disaster-causing factors and establish the evaluation index system of disaster-causing factors. All kinds of factors that affect the occurrence of disasters should be included in the research scope as much as possible.

[0029] The selection and classification of evaluation indicators for disaster-causing factors include:

[0030] S1-1. By consulting relevant literature, the evaluation indicators of disaster-causing factors are divided into three categories: meteorological impact indicators, environmental impact indicators, and line parameter indicators.

[0031] S1-2. Referring to empirical data and literature data...

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Abstract

The invention belongs to the technical field of power grid safety, and especially relates to a power grid forest fire and icing disaster safety evaluation method based on a fuzzy comprehensive evaluation approach. The method comprises the following steps: dividing disaster-inducing factor evaluation indexes of disaster into three categories, namely, meteorological influence indexes, environmental influence indexes and circuit parameter indexes, and collecting and preprocessing (including unification and index non-dimensionalization) the historical data of each index when a forest fire or icing disaster occurs; comparing every two indexes based on an analytic hierarchy process to get a decision matrix, and getting the weight of each index through calculation; respectively building forest fire and icing disaster factor sets, judgment sets and membership functions; and evaluating the power grid disaster safety based on a fuzzy comprehensive evaluation approach. The safety of power grid operation is guaranteed effectively. Full consideration is given to the cause of the influence of power grid fire and ice disaster conditions on the safe operation of the power grid, and the power grid line conditions are considered comprehensively. Risks to the safe operation of the power grid can be easily identified. Catastrophic accidents in a power grid system are prevented.

Description

technical field [0001] The invention belongs to the technical field of power grid safety, and in particular relates to a safety evaluation method for power grid mountain fire and ice-covered disasters based on a fuzzy comprehensive evaluation method. Background technique [0002] Most lines of the long-distance cross-regional transmission network are located in unmonitored mountain forests. Under the influence of climate anomalies such as global warming, high temperature, low humidity, continuous drought and high wind speed are more frequent in high fire risk weather. The higher and higher the number of wildfire outbreaks worldwide is on the rise each year. Mountain fires cause transmission lines to trip, which in turn affects the stable operation of the power grid, and even causes large-scale power outages, reducing the reliability of power supply. More and more mountain fires cause line trips and power outages. [0003] Many high-voltage transmission lines in my country a...

Claims

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Application Information

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IPC IPC(8): G06Q50/06G06Q10/04
CPCG06Q10/04G06Q50/06
Inventor 牛东晓钟雅珊刘鸿飞王岩
Owner STATE GRID HUNAN ELECTRIC COMPANY DISASTER PREVENTION & REDUCTION CENT
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