The frequent occurrence of extreme weather events due to global warming

has led to a significant increase in operating uncertainty and significantly reduced the system's resilience. To deal with high-impact

low-probability (HILP) extreme weather events

more sophisticated control strategies and smarter methods are required to enhance the resilience of the system. In this paper

a data-driven deep reinforcement learning (DRL) framework is proposed to integrate different strategies and system situational awareness to enhance grid resilience. Specifically

the resilience enhancement problem is formulated as a Markov decision process (MDP)

taking into account the situation awareness and controllability improvement of modern power systems. Next

the probabilistic effects of extreme weather events on renewable energy and transmission lines are studied and leveraged in the proposed DRL framework to improve the performance of extreme weather forecasts and estimation. Then

to speed up the training process of DRL

this paper adopts imitation learning and develops a safe topology search algorithm. Finally

an improved Soft Actor Critic (SAC) algorithm is proposed for continuous learning and training. The proposed method is tested on a modified CIGRE 15-bus medium-voltage distribution network

and the results verify the effectiveness of the proposed model and method.