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Line mountain fire disaster assessment method and system without real-time acquisition of field information

A real-time acquisition and wildfire technology, applied in instruments, data processing applications, forecasting, etc., can solve the problems of wildfire trip probability calculation that cannot be practically applied, inaccurate conclusions of wildfire trip probability calculation, and actual inconsistency.

Active Publication Date: 2017-06-23
HUNAN XIANGDIAN POWER TEST & RES TECH LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] 1. Temporary manual collection of on-site meteorological information and vegetation information at the scene of wildfires cannot be practically applied to the calculation of the trip probability of transmission lines with many points and wide areas and uncertain locations;
[0007] 2. The existing method does not fully consider the effects of vegetation, wind and other factors on the height and temperature of the flame, as well as the particle size and concentration of smoke and dust on the tripping of wildfires, resulting in inaccurate conclusions on the calculation of tripping probability of wildfires;
[0008] 3. The existing method regards the entire wildfire gap as a uniform medium affected by temperature and smoke, which is inconsistent with the actual situation, and does not combine the actual characteristics of each voltage level for analysis

Method used

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  • Line mountain fire disaster assessment method and system without real-time acquisition of field information
  • Line mountain fire disaster assessment method and system without real-time acquisition of field information
  • Line mountain fire disaster assessment method and system without real-time acquisition of field information

Examples

Experimental program
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Effect test

Embodiment 1

[0139] Example 1, such as Figure 1-3 As shown in the first embodiment of the present invention, a method for assessing mountain fire disasters on a line that does not require real-time collection of on-site information, the method includes:

[0140] Step 1. The longitude and latitude of the location where the mountain fire occurred were monitored to be 111.7538 and 26.3875. Combined with the line tower coordinates in the transmission line mountain fire monitoring and early warning system, the alarm line was obtained as the 500kV Zizong I line of the State Grid Hunan Electric Power Company. The corresponding tower number is #294, and the vegetation type between the location of the mountain fire and the transmission line is found to be shrub vegetation by querying from the China Forestry Vegetation Distribution Database, and the vegetation height is z d 1.8m;

[0141] Step 2, judging that the fire behavior type of the fire site is a surface fire;

[0142] Step 3, obtain the i...

Embodiment 2

[0191] Embodiment 2, the line mountain fire disaster assessment system without real-time collection of on-site information described in the second embodiment of the present invention, the system includes:

[0192] The vegetation type determination module is used to determine the vegetation type S1 and vegetation height z between the location of the wildfire and the transmission line d , where the vegetation type is classified into coniferous forest, broad-leaved forest, mixed coniferous and broad-leaved forest, shrub, thatch, or a mixture of the above vegetation;

[0193] The fire behavior type judgment module is used to judge the fire behavior type of the fire. If the vegetation is shrubs and thatch, it is a surface fire; crown fire;

[0194] The alarm transmission line information module is used to obtain the information of the alarm transmission line, including the voltage level U of the transmission line and the distance H of the conductor to the ground tl , the splittin...

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PUM

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Abstract

The invention discloses a line mountain fire disaster assessment method without the real-time acquisition of field information. The method comprises the steps of determining a vegetation type and a vegetation height, judging fire scene fire behavior type, obtaining alarm transmission line information, obtaining meteorological data of a mountain fire position, calculating mountain fire flame zone, ion zone and smoke zone heights, calculating flame zone breakdown voltage, calculating ion zone breakdown voltage, calculating smoke zone breakdown voltage, calculating transmission line trip probability, and evaluating a mountain fire level. The invention also provides a line mountain fire disaster assessment system without the real-time acquisition of field information. The method and the system have the advantages that a bearing body transmission line parameter, a mountain fire internal fire behavior characteristic and external environment conditions are considered, an accurate line fault probability model is established, use data is obtained based on a forestry database and a meteorological data value calculation result, the field acquisition is not needed, the probability quantitative calculation of transmission line trip caused by mountain fire is realized, the adaptability is high, and the mountain fire disaster resistance ability of a grid is improved.

Description

technical field [0001] The invention relates to the technical field of electrical engineering, in particular to a method and system for assessing line mountain fire disasters without real-time collection of on-site information. Background technique [0002] In recent years, fuels such as coal and liquefied petroleum gas have gradually replaced firewood as the main fuel, and the corridors of transmission lines have dense vegetation. Affected by the customs of villagers burning wasteland and people worshiping ancestors, large-scale mountain fires often occur in transmission line corridors. Due to the long duration of mountain fires, reclosing is difficult, and it is easy to cause multiple lines to trip and blackout at the same time, and even cause the grid to collapse. . Wildfires have become a new hot issue that seriously threatens the safe operation of large power grids and the normal power supply of society. [0003] At present, my country has carried out useful research ...

Claims

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Application Information

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IPC IPC(8): G06Q10/04G06Q50/06
CPCG06Q10/04G06Q50/06
Inventor 徐勋建陆佳政周特军李波吴传平
Owner HUNAN XIANGDIAN POWER TEST & RES TECH LTD
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