Risk Assessment of Urban Power Distribution Equipment Under Rain and Flood Hazards

doi:10.3969/j.issn.1008-0198.2025.04.003

Abstract

Abstract: Urban power distribution equipment with small power supply radius and insufficient site selection flexibility is prone to flooding and power outage in rain and flood disasters. Taking Zhuzhou city as an example, a risk assessment method for urban power distribution equipment is proposed. First of all, the short-term rainfall of one in many years is calculated by combining the formula of heavy rainfall intensity in the target area, and the inundation range and inundation depth of different recurrence periods are obtained by simulation based on the two-dimensional hydrodynamic model. Then, the risk assessment of the study area is carried out by combining the design standards of ground power distribution equipment, and different areas are classified into risk levels. A map of the inundation risk level of power distribution equipment in Zhuzhou city is drawn to identify the weak areas of the urban power grid. The study can provide a quantitative basis for the development of differentiated protection strategies for the urban power grid system, as well as scientific support for resilience enhancement of power facilities under extreme rainstorm disasters.

Key words: rain and flood hazards, recurrence period, power distribution equipment, risk assessment

CLC Number:

TM727

WU Changjiang, LI Zhiqiang, LI Bin, YUAN Guoqing, ZHU Jing, SU Sheng. Risk Assessment of Urban Power Distribution Equipment Under Rain and Flood Hazards[J]. Hunan Electric Power, 2025, 45(4): 15-20.

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