WIND POWER GENERATION SYSTEM, DEVICE FOR CONTROLLING SAME, AND METHOD FOR CONTROLLING SAME

It is an object of the present invention to suppress an output power decrease amount due to a wind speed drop when an output power increase request is issued during output power reducing operation. There is provided a control apparatus for a wind turbine generator system including a wind turbine classifying unit (31) that classifies a plurality of wind turbines into a first wind turbine group that does not satisfy a rated wind speed condition and a second wind turbine group that satisfies the rated wind speed condition, a first controlling unit (33) that triggers, for the wind turbines of the first wind turbine group, the output power reducing operation and causes the wind turbines of the first wind turbine group to perform an output power corresponding to a wind condition, and a second controlling unit (34) that supplements a first deviation, which is a difference between a total output power of the first wind turbine group and a target output power, with an output power from the wind turbine(s) of the second wind turbine group.