Rotation blade attachment method for regeneration energy type electric generation apparatus

A blade attaching method for a power generating apparatus of renewable energy type which comprises a blade, a hub having a blade attaching part to which the blade is attached and a bearing which supports the blade attaching part rotatably, a generator to which a torque is inputted from a side of a rotor including the blade and the hub, and a pitch drive mechanism which adjusts a pitch angle of the blade by rotating the blade attaching part, the method comprising the steps of:

• holding the blade in such a manner that the blade attaching part of the hub faces a blade root part of the blade;
• rotating the blade attaching part to a set angular position by the pitch drive mechanism in such a state that the blade is held;
• and
• after rotating the blade attaching part to the set angular position, fixing the blade to the hub, the power generating apparatus further comprising:
• a plurality of the blades;
• a plurality of the pitch drive mechanisms provided to correspond to the plurality of the blades;
• a plurality of existing control panels provided for respectively controlling the plurality of the pitch drive mechanisms to adjust the pitch angle of each blade during normal operation of the power generating apparatus,
• the method further comprising:
• connecting a temporary control panel with the plurality of existing control panels, the temporary control panel including a plurality of control circuits which are provided respectively for the plurality of existing control panels and configured to control each pitch angle of the plurality of blades;
• and
• then selecting a corresponding one of the plurality of the control circuits, which corresponds to one of the existing control panels provided for the pitch drive mechanism of the blade attaching part to be rotated using a switching circuit of the temporary control panel, before the step of rotating the blade attaching part,
• wherein
• the pitch angle of the blade attaching part to be rotated is adjusted using the control circuit selected by the temporary control panel in the step of rotating the blade attaching part.