A method for assessing the probability of transmission line failure caused by wildfire

A technology of failure probability and transmission line, applied in the direction of measuring electricity, measuring electrical variables, measuring devices, etc., can solve the problem of not meeting the requirements of online safety analysis and early warning

Active Publication Date: 2016-06-22
STATE GRID ELECTRIC POWER RES INST +1
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  • Abstract
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Problems solved by technology

[0006] In recent years, the frequency of natural disasters has gradually increased, which seriously threatens the security and stability of the power grid. However, there is no probability quantitative evaluation technology that meets the requirements of online security analysis and early warning. Therefore, it is urgent to carry out research and development of related technologies.

Method used

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  • A method for assessing the probability of transmission line failure caused by wildfire
  • A method for assessing the probability of transmission line failure caused by wildfire
  • A method for assessing the probability of transmission line failure caused by wildfire

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Embodiment Construction

[0082] The present invention will be described in further detail below with reference to the accompanying drawings and examples.

[0083] Figure 13 Step 1 describes the collection of real-time wildfire forecast and live information (burning location, burning height, etc.), general weather forecast and live information (air density, air humidity), and real-time power grid working condition information in the control center.

[0084] Figure 13 In step 2, the line is segmented according to the geographical characteristics of the line corridor and the surrounding environment characteristics, and the lines with the same geographical characteristics and surrounding environment characteristics are divided into one section.

[0085] Figure 13 Step 3 in the middle is to combine various information of meteorology, terrain and wildfires, and evaluate various dynamic variables according to the impact of different terrains (flat terrain and sloped areas) on wildfire burning, including...

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Abstract

The invention discloses a method for evaluating the failure probability of transmission lines caused by wildfires, and belongs to the technical field of power systems and automation thereof. The invention realizes the quantitative evaluation of the failure probability of transmission lines caused by wildfires, and establishes an accurate line failure probability model according to the mechanism of transmission line failures caused by wildfires, which correctly reflects the internal and external factors related to transmission line failures, making mountain fires The assessment of fire-induced line failure probability does not have to rely on the accumulation of historical data, and can take key factors into account, so it has strong adaptability. The invention greatly promotes the risk management of transmission lines and improves the ability of the power system to defend against external disasters.

Description

technical field [0001] The invention belongs to the technical field of electric power systems and automation thereof. More precisely, the invention relates to a method for evaluating the failure probability of transmission lines caused by wildfires. Background technique [0002] Due to the reverse distribution of energy and load centers in my country, it is necessary to use long-distance transmission lines to transmit electric energy from power generation centers to load centers, and long-distance transmission lines will pass through various landform environments. For transmission lines passing through forested areas and mountainous areas with dense vegetation, the safe and reliable operation of equipment is affected by natural environment and weather changes, and wildfires caused by high temperature, man-made or lightning fires are one of the main disasters that threaten the safety and operation of lines . First of all, due to the increasingly tight resources of transmissi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R31/00
Inventor 薛禹胜吴勇军
Owner STATE GRID ELECTRIC POWER RES INST
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