| 摘要 |
PROBLEM TO BE SOLVED: To protect a wind turbine rotor from thunderstroke on regions of the wind turbine rotor other than blades.SOLUTION: A wind turbine rotor comprises: at least two blades; a hub; a spinner covering the hub and formed out of an insulating material; a blade lightning-resistance system provided on each of the blades; and a spinner lightning-resistance system provided on the spinner and including a receptor. The receptor is provided so that at least part of the receptor, when the receptor is projected onto a rotary surface of the wind turbine rotor, is located in an angle range corresponding to a circular arc area between blade roots of the adjacent blades in a virtual circle on the rotary surface passing through the blade roots of the at least two blades. The receptor is provided so that at least part of the receptor, when the receptor is projected onto a flat surface including a rotary shaft of the wind turbine rotor, is located on a front side of the blade roots of the blades while it is assumed that a hub side is the front side and a nacelle side is a rear side with respect to an axial direction of the rotary shaft. |
