Abstract: This paper proposes a short-term voltage dispersion prevention control strategy for wind farms that considers the differentiation of unit statuses to address the issue of poor universality in the traditional low-voltage control strategies for the grid-connected doubly-fed wind farms under the multi-voltage disturbance scenarios. Firstly, the dynamic characteristics of low-voltage ride-through for the doubly-fed wind farms equipped with the reactive power control and the Crowbar protection circuits are analyzed to determine the current and impedance characteristics of each wind turbine unit during the low-voltage ride-through. Subsequently, the node voltage method, by considering the impedance variation within the wind farm, is employed to establish a dynamic relationship between the injected current of each unit and the terminal voltage, thereby determining the impact level of each unit on the node voltages within the station during the low-voltage ride-through. Furthermore, the voltage control objectives for wind farms under different voltage disturbance scenarios are designed, and a prevention control strategy for wind farms adaptable to various voltage sag depths is formulated. Finally, a wind farm consisting of four doubly-fed wind turbine units and a realistic electromagnetic transient model of an actual wind farm are built in the Simulink and RTLAB OP5600 real-time digital simulation platform to validate the effectiveness of the proposed wind farm control strategy.