Mountain fire disaster early-warning method for overhead power transmission line

Abstract

The invention discloses a mountain fire disaster early-warning method for an overhead power transmission line. The method comprises the steps of A, acquiring and obtaining mountain fire occurrence information by utilizing a monitoring module, wherein the mountain fire occurrence information comprises combustible material characteristics, a terrain factor and a meteorological factor; B, obtaining a mountain fire influence factor in the mountain fire occurrence information, and establishing a relationship through a random forest model for threshold association between a mountain fire and the mountain fire influence factor of the mountain fire; C, performing time-space process modeling of mountain fire spread through a cellular automaton with the capability of simulating a complicated natural disaster time-space evolution process, and determining a cellular conversion rule of the cellular automaton by adopting the random forest model; and D, predicting a mountain fire spread process through a cellular automaton model, estimating time of the mountain fire spread to the overhead line, and assessing the risk of overhead line shutdown in combination with external disaster information and power grid internal characteristics. The method can assist in more effectively handling power system interlocking faults caused by a natural disaster prediction effect, so that economic and personnel loss of a power grid and power utilization units is reduced.

Description

technical field [0001] The invention belongs to the technical field of mountain fire risk early warning, and in particular relates to a mountain fire disaster early warning method for overhead transmission lines. Background technique [0002] As the land for transmission line corridors becomes more and more tense, many transmission line corridors often cross densely vegetated mountainous areas and forest areas. When wildfires spread below the lines, it may cause phase-to-ground or phase-to-phase breakdown of the lines and cause tripping accidents. Especially for units that need continuous power supply, such as hospitals and mines, once the power is cut off, it is likely to cause increased personal injury and property loss. With the promulgation of policies such as afforestation, returning farmland to forests, and closing mountains for afforestation, the height and density of vegetation in mountainous and forested areas near transmission line corridors have increased signific...

AI Technical Summary

Problems solved by technology

However, most of these studies focus on statistics and mechanism analysis, and the prediction is based on the assumption of a linear relationship, which is different from the actual spread of wildfires. It is difficult to realize the prediction of wildfire spread in time and space, and to combine the influence mechanism of external factors on power grid security. not enough

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