Wind power generation device control system and blade wind detecting device

A wind power generation device control system comprising:

• a blade wind detecting device for detecting at least one of a wind direction or a wind speed on at least one blade of a wind power generation device;
• and
• a blade control device for controlling at least one of (i) a pitch angle of the at least one blade or (ii) a yaw angle of the wind power generation device, based on at least one of the wind direction or the wind speed detected by the blade wind detecting device,
• wherein the blade wind detecting device includes:
• a plurality of stress sensors provided along a circumferential direction on the at least one blade, and are configured to measure the stress to which the at least one blade is received from outside at the same time;
• a detecting device control unit for detecting the wind speed based on the stress measured by the plurality of stress sensors at the same time, and detecting the wind direction at the point of time when the plurality of stress sensors measure the stress, and
• a transmitting unit provided on the at least one blade, the transmitting unit being configured to wirelessly transmit a data regarding the detected wind speed and the wind direction to the blade control device.