DC voltage deviation suppression strategy based on disturbance observer feedforward current control

The invention discloses a DC voltage deviation suppression strategy based on disturbance observer feedforward current control, which utilizes a controllable load and a storage battery to eliminate voltage deviation, adds feedforward current control to improve the response speed, introduces a disturbance observer to reduce the system cost. When the direct-current voltage deviation is small, the controllable load can control the voltage within a limit value; and when the direct-current voltage deviation is large, the storage battery is used for controlling, and the voltages of all nodes are controlled within the limit. According to the invention, the system response speed can be improved, the DC voltage transient fluctuation amplitude is reduced, the system cost is reduced, the DC voltage deviation of each node is inhibited, and the energy storage economy and the service life of the storage battery are improved and prolonged by utilizing the controllable load. 本发明公开了一种基于干扰观测器前馈电流控制的直流电压偏差抑制策略，利用可控负荷与蓄电池消除电压偏差，加