Patent ID: 8456790
Filing Date: 2013-06-04
Classification: F03D,H05H,Y02E

Abstract:
1. A wind power generation system, comprising: a lightning protecting device including a lightning receiving part provided on a blade and a lightning conductor provided from the lightning receiving part to an underground via an interior of the blade and a windmill body to guide a current of lightning striking the lightning receiving part into the underground; an airflow generation device including a first electrode provided on the blade and a second electrode apart from the first electrode via a dielectric and buried in the dielectric; a voltage applying mechanism able to apply a voltage between the first electrode and the second electrode of the airflow generation device, able to electrically connect the first electrode to one terminal of a voltage applying part or a grounding conductor, and able to electrically connect the second electrode to another terminal of the voltage applying part or the grounding conductor; and a thundercloud detecting device detecting information regarding thundercloud approach, wherein, when the information regarding the thundercloud approach is detected by the thundercloud detecting device, the second electrode is electrically connected to the grounding conductor and the electrical connection of the first electrode and the second electrode to the terminals of the voltage applying part is cut off.