Wind energy is widely distributed and easy to use, so wind power generation technology will remain an important force in adjusting the energy structure for a long time in the future. During the operation of the wind power system, the dynamic performance of the DC bus voltage is often affected by disturbances from the turbine side and the grid side. In order to solve this problem, a linear active disturbance rejection controller based on deviation differential (LADRCDD) for grid-connected control is proposed in this paper. In this strategy, the observation deviation of the control observer is redefined by the extended state observer (ESO), so as to improve the tracking performance of each state variable and make the controlled object better compensated. Additionally, the disturbance immunity of LADRCDD is analyzed, theoretically. Based on the analysis results, the rule of parameter optimization are given. Finally, the control performance of the LADRCDD strategy was tested on the power hardware-in-the-loop platform to verify its correctness, effectiveness and reliability.