The Attributions of Rapid-Intensifying Typhoon and Induced Power Grid Disaster

The strong wind and heavy rainfall accompanying the rapid intensification (RI) of typhoons pose significant threats to power grid security. This study examines the primary factors that damage power transmission lines and explores potential protective measures against fierce wind and torrential rain disasters. Utilizing numerical simulations based on the Earth System Model (CAS-ESM) platform, we focus on the attribution of rapid-intensifying typhoons and their induced power grid disasters. The results indicate that high boundary-layer convective effective potential energy, convective bursts, and strong secondary circulation contribute significantly to the RI of typhoons. These factors accelerate the primary circulation through gradient wind balance, resulting in strong winds that cause extensive damage to power grids. By analyzing the mechanisms behind typhoon intensification, this research aims to improve forecasting accuracy and enhance preventive measures, thereby reducing the impact of typhoon-induced disasters on power infrastructure. The findings underscore the importance of understanding the dynamics of RI processes to mitigate the risks posed by such extreme weather events.