Power grid system geological disaster risk assessment method and system based on heavy rainfall

Abstract

The invention discloses a power grid system geological disaster risk assessment method and system based on heavy rainfall. The assessment method comprises the following steps: dividing a region to be measured into a plurality of 3km * 3km grid regions; selecting factors with relatively high correlation with geological disaster occurrence, wherein the factors comprise a rainfall factor and a geological factor; carrying out statistics on the distribution probability of historical geological disasters in each factor; performing interval division on each factor, and determining a distribution probability and a risk level of a historically occurring geological disaster in each factor interval by using an information amount method; building a matter element evaluation grade by utilizing an extension matter element model; performing overall assessment on the geological disaster risk level of the to-be-measured area. According to the invention, geological disasters having significant influence on the power grid system can be analyzed, disaster-inducing factors such as heavy rainfall and geographic information are integrated, the extension matter-element model is adopted for modeling for risk evaluation research, and risk zoning grade evaluation of the geological disasters of the target power grid system is obtained.

Description

technical field [0001] The invention belongs to the technical field of geological disaster risk assessment, and in particular relates to a method and system for geological disaster risk assessment of a power grid system based on heavy rainfall. Background technique [0002] Power grid disaster prevention and mitigation work involves multidisciplinary expertise in electricity, meteorology, geology, and oceanography, as well as the application of multidisciplinary integrated technology for comprehensive applications such as network communications, computers, GIS, databases, information processing, administrative management, and disaster science. Integration and management applications have high technical requirements. Among them, heavy rainfall has the widest range of influence and the highest frequency of occurrence among various natural disasters. The related secondary disasters such as floods and geological disasters seriously threaten the safe production of power grids, so ...

AI Technical Summary

Problems solved by technology

[0004] At present, the research on the impact of heavy rainfall-induced geological disasters in the power industry is still in its infancy. Due to the discrete characteristics of precipitation distribution and complex geological conditions and other factors, there are mainly the following problems in the zoning of geological disaster risk levels in power grids based on heavy rainfall: (1) There are many types of geological disasters, such as landslides, debris flows and other disasters, which have different inducing factors. A general and unified analysis of these geological disasters has the disadvantages that the physical meaning of disaster induction is not clear and the pertinence is not strong; ( 2) The research on the decision-making process of most emergency command systems from factors to the specific impact on the power grid is not clear, and the emergency response level judgment measures are not scientific, which leads to the inability of the current power grid disaster prevention decision-making to respond scientifically to the external environment, especially weather, disaster factors, etc. The impact on power transmission and transformation equipment is lack of pertinence

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