The invention relates to the technical field of wind power generation, and aims to provide an additional wind power fluctuation control method suitable for a flexible direct current high-speed loop. The method comprises the steps of: calculating a measurement wind speed V and a wind speed fluctuation direction, then calculating the sum [delta]Psum of the absolute values of power fluctuation of a plurality of alternating current connecting lines directly connected with a fan end, calculating a fluctuation suppression coefficient c by a fuzzy PID controller, calculating a correction value R according to the fluctuation suppression coefficient c and the measured wind speed V, determining the positive and negative attributes of the correction value R according to the wind speed fluctuation direction, and calculating an outer ring control input amount according to the correction value R, the outer ring active power and the outer ring active power reference value P*, and calculating the output current id* of an alternating current side by an outer ring controller according to the outer ring control input amount. The method has the effect of reducing disturbance of power fluctuation of wind power on the flexible direct-current power transmission system.