Multi-fire-point power grid risk minimization emergency handling method and system

Abstract

The invention discloses a multi-fire-point power grid risk minimization emergency handling method, which comprises the steps of building a power grid section set; recognizing to acquire an earth surface forest fire point set; determining a power transmission line set which is caused to alarm by forest fire points; calculating the tripping probability of each line in the power transmission line set; calculating a power grid safety risk factor of each line; calculating the power grid harm degree of each fire point; building an optimization problem model according to existing fire-fighting equipment deployment points, and determining an optimization strategy. The invention further provides a multi-fire-point power grid risk minimization emergency handling system. The method and system disclosed by the invention have the beneficial effects that the influence degree of fire points for the safety and stability of the power grid can be effectively quantified, and optimal forest fire handling priorities are determined; an optimal fire-fighting equipment allocation scheme can be formulated according to an existing fire-fighting equipment deployment scheme, forest fire disasters having great influences for the power grid are ensured to be handled in a preferential manner, and the forest fire disaster risk of the power grid is reduced to the lowest degree.

Description

technical field [0001] The invention relates to the technical field of electrical engineering, in particular to a risk minimization emergency response method and system for a multi-fire point power grid. Background technique [0002] UHV and other AC and DC transmission lines are important energy channels related to the national economy and people's livelihood. Because the corridors of UHV and other AC and DC transmission lines span a wide area and cover a large area, the transmission lines pass through many areas with high incidence of wildfires. In severe cases, the vicinity of the transmission line can reach up to There are thousands of fire points, but the number of fire extinguishing equipment is limited. The existing disposal methods for extinguishing fires nearby or with fires are easy to miss the mountain fire disasters that threaten important lines, causing mountain fires on dozens of transmission lines including UHV. Trip outages seriously threaten the safe and sta...

AI Technical Summary

Problems solved by technology

[0003] Patent CN104915775A proposes a risk assessment and emergency decision-making method for mountain fire disasters on transmission lines. This method evaluates the risk of mountain fires based on the trip probability of transmission line mountain fires and the amount of trip load loss, and formulates mountain fire disposal strategies based on this method. The impact of wildfires on the safety and stability of the power grid has not been analyzed; the patent CN104217375B proposes a graph theory-based site selection method for wildfire emergency points of transmission lines, through statistics of historical wildfire distribution maps, transmission line load losses and transmission line The minimum time for the implementation of mountain fire emergency measures is to select the optimal mountain fire emergency point, but this patent does not quantify the impact of mountain fire on specific lines and power grids, and cannot determine the sequence of mountain fire emergency response; patent CN103971484A proposes a An intelligent decision-making method for mountain fire emergency response on large-scale transmission lines. The fire extinguishing and disposal plan is determined only according to the number of fire points near the transmission line and the voltage level of the transmission line. It does not quantitatively analyze the threat of mountain fires to the safety of lines and power grids, and cannot generate the most Excellent mountain fire disposal strategy; patent CN103961825B proposes an intelligent emergency response method for transmission line mountain fire based on fire behavior characteristics analysis, and analyzes its threat to transmission line according to the fire behavior characteristics of mountain fire, but the patent does not analyze The degree of impact of fire on the safety and stability of the entire power grid cannot guide the priority disposal of wildfire disasters that pose the greatest threat to power grid security

[0004] Therefore, the existing technology cannot quantitatively analyze the threat degree of each fire point to the security and stability of the power grid, and cannot determine the optimal wild fire disposal plan

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