AHP-based method for natural disaster risk assessment of power grid

A technology for risk assessment and natural disasters, applied in electrical digital data processing, special data processing applications, instruments, etc., can solve problems such as limited accuracy of assessment results, reduce economic losses, and ensure safe and stable operation.

Inactive Publication Date: 2016-02-03
STATE GRID CORP OF CHINA +1
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Problems solved by technology

[0003] In the prior art, only the electrical characteristics of the power system are usually considered whe

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  • AHP-based method for natural disaster risk assessment of power grid

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Embodiment Construction

[0031] The present invention is described in detail below in conjunction with accompanying drawing:

[0032] Such as figure 1 As shown, the present invention provides a kind of AHP-based power grid natural disaster risk assessment method, comprises the following steps:

[0033] S1. Statistically analyze the historical disaster situation and historical weather forecast information in the area where the evaluated power grid is located, and determine several evaluation indicators that have a greater impact on the safe operation of the power grid through hazard identification and vulnerability analysis, so as to construct the evaluated power grid The risk assessment indicator system; wherein, the risk assessment indicator system is composed of several assessment indicators; the first-level assessment indicators included in the assessment indicators are: natural factor impact indicators, power grid characteristic indicators, disaster resilience indicators and social impact indicato...

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Abstract

The present invention provides an AHP-based method for natural disaster risk assessment of a power grid. The method comprises: performing statistical analysis on historical disasters and historical weather forecast information in a region in which an assessed power grid is located, and constructing a risk assessment indicator system through harm identification and vulnerability analysis; constructing a natural disaster risk estimation model of the assessed power grid by using an improved analytic hierarchy process; determining a relative weight of each assessment indicator by using the analytic hierarchy process; determining a risk value the of each assessment indicator based on a preset risk assessment standard; calculating a comprehensive risk value by using the risk value of each assessment indicator and the relative weight of each assessment indicator as an input value of the natural disaster risk assessment model; and establishing a risk level standard so as to obtain a final risk level of the assessed power grid. Impacts from the natural environment and the social environment are comprehensively considered, and comprehensive assessment that combines qualitative and quantitative assessment is performed on the natural disasters of a power grid, thereby providing a theoretical basis for ensuring safe and stable operation of the power grid and for reducing economic loss.

Description

technical field [0001] The invention belongs to the technical field of power system security and risk assessment, and in particular relates to an AHP-based natural disaster risk assessment method for power grids. Background technique [0002] In recent years, with the development of my country's power system, the power grid system has also developed rapidly. The operating voltage level of the power grid system has been continuously improved, and the network scale has also been continuously expanded. At present, my country has formed the Northeast Power Grid, North China Power Grid, Central China Power Grid, East China Power Grid, The Northwest Power Grid and the Southern Power Grid are six large-scale regional power grids across provinces, and have basically formed a complete long-distance transmission grid. Power grid construction has become the main direction of my country's electric power construction, and the safe operation of the power grid is the key to ensure the safe ...

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Application Information

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IPC IPC(8): G06F19/00
Inventor 马维青唐保国杨军宋述停穆昭玺
Owner STATE GRID CORP OF CHINA
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