Power regulation method for flexible direct-current transmission converter

The invention relates to a power regulation method for a flexible direct-current transmission converter and belongs to the technical field of direct-current power transmission of power systems. The strategy comprises the following steps: performing control analysis on a mathematical model and a control mode of the converter power; discovering active and reactive power decoupled PI control modes according to the analysis model and the control mode; and limiting effective values of power output and AC voltage deviation so as to obtain positive and negative sequence compensating current accordingto the controlled PI value. According to the method disclosed by the invention, the overcurrent problem occurring when a symmetric or asymmetric fault occurs on the system network side is solved, andthe low voltage ride-through ability of an MMC converter is enhanced. The overcurrent can be effectively suppressed during the fault, the low voltage ride-through ability of the converter is enhanced, and the power regulation