| 摘要 |
<p>An up-wind type windmill, wherein a windmill structure and an operating method therefor are provided that can prevent an abnormal, excessive load such as a slant-direction load from acting on wings to protect wings against damages even when a strong wind acting on wings causes power outage. An up-wind type windmill provided with a nacelle turnably supported on a support column, wherein, when a wind velocity is above a cutout wind velocity serving as a reference wind velocity of moving into a set idling operation status and an idling operation status is in place, the nacelle is turned 180° from a normal up-wind position to the rear side to be moved to a down-wind position and the windmill is kept on a stand-by in the down-wind position. When the detected wind velocity exceeds a DWSS wind velocity set based on an allowance of a maximum instantaneous wind velocity, the nacelle is turned from an up-wind position to a down-wind position and the yaw brake is released.</p> |
