Abstract: To address the voltage fluctuation issue in distribution networks induced by high-penetration renewable energy integration, this study proposes an adaptive event-triggered voltage control method that incorporates reactive power support from energy storage systems. First, a data-driven voltage sensitivity matrix is constructed using the dynamic mode decomposition method to overcome the difficulties in identifying line parameters in traditional power flow calculations. Secondly, a new adaptive event-triggered communication mechanism is designed. This mechanism balances control performance and the operation frequency of energy storage devices through the dynamic adjustment of the event-triggering threshold. Finally, in combination with the Lyapunov function, the design criteria for controller gain under bounded transmission delays are derived. Simulation results indicate that, compared to traditional event-triggered control methods, the proposed approach can effectively enhance the voltage control response speed and reduce the operation frequency of devices simultaneously.