Real-Time Risk Zoning Research on Rainfall Induced Disasters in Transmission Lines

Starting from the three types of rainfall-related disasters affecting power grids, this article considers the combined effect of multiple factors in the natural disaster risk assessment system to construct a real-time risk assessment index system for rainfall-induced disasters on transmission lines. Large-scale data such as elevation, water systems, and vegetation coverage in a specific region are comprehensively selected and used in conjunction with rainfall data as dynamic variables in the evaluation method to obtain a real-time risk assessment map for different types of disasters. From the analysis of risk zoning, high-risk areas for rain-flash accidents in the region are mainly caused by short-term heavy rainfall, while high-risk areas for urban waterlogging and secondary disasters are mainly caused by geographical features. Targeted recommendations are proposed to provide effective information for disaster prevention and mitigation decisions and to ensure power grid safety to the greatest extent possible.