Method for evaluating forest fire spreading risk of power transmission channel

A forest fire spread and risk assessment technology, applied in image data processing, instruments, data processing applications, etc., can solve the problems that do not involve the relationship between flame height and forest fire intensity, which causes line tripping, and achieve the effect of improving accuracy

Active Publication Date: 2015-03-25
STATE GRID CORP OF CHINA +2
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Problems solved by technology

In the prior art, predictive analysis and calculation of forest fire behavior changes and forest fire spread trends are carried out only based on two types of parameters, wind direction and humidity, or predictive analysis and calculation of the shape of forest fire burning zones are performed only based on two types of parameters, terrain conditions and wind conditions. However, the influence of terrain around the fire point, flammability of vegetation, and forest fire spread barriers such as

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  • Method for evaluating forest fire spreading risk of power transmission channel
  • Method for evaluating forest fire spreading risk of power transmission channel
  • Method for evaluating forest fire spreading risk of power transmission channel

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Embodiment Construction

[0027] The present invention is further described below in conjunction with accompanying drawing:

[0028] The present invention proposes a risk assessment method for forest fire spread in power transmission channels, figure 1 For the specific flow chart of this method, by figure 1 As can be seen, the method includes:

[0029] S101: Receive MODIS (Moderate Resolution Imaging Spectroradiometer) and NOAA (National Oceanic and Atmospheric Administration) satellite remote sensing data, and preprocess the remote sensing data.

[0030] In a specific embodiment of the present invention, satellite remote sensing images can be collected by MODIS (moderate resolution imaging spectrometer) satellites and NOAA (National Oceanic and Atmospheric Administration of the United States) satellites. After positioning and calculating the sun altitude angle, the 1B data set is obtained. Then correct the sun altitude angle, limb darkening correction, and map projection transformation on the 1B da...

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Abstract

The invention provides a method for evaluating the forest fire spreading risk of a power transmission channel. The method for evaluating the forest fire spreading risk of the power transmission channel is characterized by comprising the following steps that S101, a remote sensing image is preprocessed; S102, fire points and obstruction objective image elements are extracted based on the corrected remote sensing image; S103, fire outbreak point calculation is carried out; S104, the forest fire spreading speed is calculated; S105, burning range estimation is performed within predefined time duration; S106, a power transmission tower set affected by a fire is searched; S107, the forest fire spreading risk of the power transmission channel is evaluated. By the adoption of the method, various data of the wind speed and direction, the topographic slope, the vegetation type, ground barriers and the like are collected, so that a calculation method including forest fire spreading conditions and relevant factors for causing power transmission line tripping by the fire is established, hence, evaluating calculation of the forest fire spreading risk of the power transmission channel is achieved, and the national economy loss caused by large-area outage of a power grid can be effectively prevented and reduced.

Description

technical field [0001] The invention relates to the technical field of electric power system and automation, in particular to a method for assessing the risk of forest fire spread in power transmission channels. Background technique [0002] With the continuous deepening of the intelligent development of the State Grid, the large-scale construction of the UHV transmission network, and the large-scale and high-efficiency power grid marked by large-scale networking and large-capacity encounter disasters, which will have a fast impact and a wide range. socialization trends. Forest fire is one of the main factors causing power grid disasters. The situation of forest fire prevention in the power grid is becoming more and more serious. It is necessary to carry out comprehensive fire prevention in the power grid from various aspects in order to truly control the damage of forest fires to the power grid and effectively improve the level of safe operation of the power grid. In the ...

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Application Information

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IPC IPC(8): G06T7/00G06T7/60G06Q50/06
CPCG06Q10/0635G06Q50/06G06T7/50G06T7/75G06T2207/10032
Inventor 阮羚吴琼陈孝明王毅黄俊杰郝艳军熊宇张浩
Owner STATE GRID CORP OF CHINA
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