Probability evaluation method of failure caused by typhoon to power transmission line

A technology for transmission lines and lines, which is applied in the fields of electrical digital data processing, special data processing applications, instruments, etc., can solve problems such as failure to meet online security analysis and early warning requirements.

Active Publication Date: 2012-08-08
NARI TECH CO LTD
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Problems solved by technology

[0006] In recent years, the frequency of natural disasters has gradually increased, threatening the security and stability of the power grid. However, there is no probability quan...

Method used

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  • Probability evaluation method of failure caused by typhoon to power transmission line
  • Probability evaluation method of failure caused by typhoon to power transmission line
  • Probability evaluation method of failure caused by typhoon to power transmission line

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Embodiment Construction

[0048] Attached below Figure 5 , the method of the present invention is described in detail.

[0049] Figure 5 Step 1 in the above describes the collection of real-time typhoon forecast and live information, general meteorological information and real-time power grid working condition information at the control center;

[0050] Figure 5 Step 2 in the above describes the use of mathematical modeling technology and expert system technology to describe the geographical features and surrounding environmental features along the line and their influence on wind speed and wind direction, and divide the line into segments according to the geographical features and surrounding environmental features, with the same geographical features The line with the characteristics of the surrounding environment is a section.

[0051] Figure 5 Step 3 is to combine the weather, typhoon and power grid working condition information with the static parameters of each line for each line, and eva...

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Abstract

A probability evaluation method of failure caused by typhoon to a power transmission line is suitable for evaluating failure probability after the power transmission line is affected by the typhoon. The method mainly comprises the steps of quantitative evaluation on the power transmission line affected by the typhoon as well as environmental factors and probability modeling of the line failure caused by the typhoon. In the quantitative evaluation, ways of the failure caused by the typhoon to the power transmission line and key factors including inner factors (design strength, state and the like of lines) and outer factors (typhoon, terrain, rainfall and other factors) are mainly evaluated; and in the probability modeling, a reasonable failure probability model is mainly established to calculate the line failure probability corresponding to the quantitative evaluation results of the key factors. The probability evaluation method has the beneficial effects that the evaluation on various loads and real-time anti-wind capability of complicated lines and towers is avoided, the effect of the inner factors and the outer factors and the characteristics of the various failure ways are simultaneously considered, a mechanism that the failure of the line is caused by the typhoon is satisfied, and the capacity of a power system in defending the typhoon disaster is improved in combination with a wide-area measurement, analysis, protection and control system.

Description

technical field [0001] The invention belongs to the technical field of electric power system and automation thereof. Background technique [0002] The safe and reliable operation of transmission lines is closely related to weather and environment. First of all, due to the environmental constraints of the line corridor and other reasons, the line design has become increasingly compact and refined, and is easily affected by the meteorological environment; secondly, the climate has deteriorated from time to time in recent years, and new requirements have been put forward for the line operation to prevent severe weather conditions; in addition, The smart grid puts forward new requirements for the operation risk management of transmission lines. Therefore, it is necessary to study the impact of typhoons and other external disasters on transmission lines, evaluate the failure probability of lines, strengthen the meteorological environment risk management of transmission lines, an...

Claims

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Application Information

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IPC IPC(8): G06F19/00
Inventor 薛禹胜王昊昊吴勇军谢云云薛峰徐泰山李碧君方勇杰
Owner NARI TECH CO LTD
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