Flood risk analysis of urban power distribution terminals under the influence of rainstorm and waterlogging

The frequent occurrence of urban waterlogging seriously affects the safe operation of distribution network. The lack of differentiated planning for the waterlogging prevention of distribution facilities in the existing codes of distribution network infrastructure causes a large number of distribution facilities to be inundated by rain in extreme storm weather. Taking Guangde City of Anhui province as the research area, taking the ring grid cabinet of 10 kV distribution network as the research object, based on the local geographic information data, the distribution network location information data and the historical extreme rainfall disaster data, a two-dimensional unsteady FloodArea model was used to analyze the risk of flooding caused by short-duration rainfall in historical extreme weather, draw the 10kv distribution terminal inundation risk distribution map in Guangde City, and evaluate the equipment inundation risk. The results show that the FloodArea model can accurately simulate the extreme heavy rainfall process, and the simulation results are important for reducing the submergence risk level of existing distribution facilities and distribution network planning.