Abstract: The intraday charging plans of electric vehicle（EV） users exhibit regularity, but under the influence of sudden events, the charging behaviors of EV users has suddenness and subjectivity. Sudden events can affect the charging and discharging process of EVs by users. Ultimately, it can affect the stable operation of the power system. Therefore, considering the charging willingness of users when the distance in actual trip changes, a charging willingness model is proposed to simulate the charging willingness range of users. Then, based on the spatiotemporal characteristics of EV trips, sudden events that affect the dispatch plan are divided into four categories. The impact of these four kinds of sudden events on the established dispatching plan is simulated, and factors such as temperature and electricity price are comprehensively considered to dispatch the charging and discharging of EVs. Finally, an energy management strategy for EVs with energy storage stations in a multistate scenario is proposed to dispatch the charging and discharging processes of EVs under normal circumstances and two extreme conditions. A simulation using the regional power grid is conducted to analyze the impact of trip chain reconstruction on EV charging and discharging dispatch under the conditions of various factors including behavioral scenarios, event types, dispatch strategies, cluster sizes, user participation, and wind power capacities, and to validate the reasonableness and effectiveness of the proposed model.