Emergency disposal method and system for risk minimization of multi-fire point power grid

Abstract

The invention discloses an emergency disposal method for risk minimization of a multi-fire point power grid, comprising: establishing a cross-section set of a power grid; identifying and obtaining a set of surface mountain fire fire points; The trip probability of each line; the calculation of the grid risk factor of each line; the calculation of the grid hazard degree of each fire point; according to the distribution of existing fire extinguishing equipment, an optimization problem model is established to determine the optimization strategy. The invention also provides an emergency treatment system for risk minimization of a multi-fire power grid. Beneficial effects of the present invention: it is possible to effectively quantify the degree of influence of the fire point on the safety and stability of the power grid, and to determine the priority order of optimal mountain fire disposal; to formulate the optimal deployment plan of the optimal fire extinguishing equipment according to the existing fire extinguishing equipment layout plan, to ensure the safety and stability of the power grid The high-impact wildfire disasters are prioritized to minimize the risk of power grid wildfire disasters.

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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