A wind turbine apparatus has a tower and a plurality of blades rotatably mounted relative to the tower. Each of the plurality of blades has a reflective media on a surface thereof. The reflective media has at least a pair of primary colors. Each primary color is different from each other. The reflective media on one of the plurality of blades is arranged in an order different than in order of the reflective media of an adjacent blade. The reflective media can further include a mixed color of white. The reflective media comprises bands extending across a surface of the blade.

An acoustic monitoring system and method for the health status of an offshore wind turbine and an ocean wave are provided. The acoustic monitoring system includes a first laser transmitter, a second laser transmitter, a telephoto camera provided at a hub, a vibration detection sensor provided on a tower of a wind turbine, and four acoustic detection sensors arranged at an interval of 90° along the circumference of the tower. The first and second laser transmitters are arranged at the bottom of a nacelle of the wind turbine and emit laser lights vertically downward. The first laser transmitter, the second laser transmitter, the telephoto camera, the vibration detection sensor, and the acoustic detection sensors are connected to a data acquisition and conversion module through a transmission module. The acoustic monitoring system combines laser light detection with acoustic signal feature detection to improve stability and safety of the offshore wind turbine.

The present subject matter is directed to methods for manufacturing rotor blades and/or components thereof of a wind turbine. In one embodiment, the method includes forming the rotor blade component and covering at least a portion of the rotor blade component with at least one coating material. In addition, the coating material includes at least one additive having a changeable pigment. After the component is formed, the method includes inspecting the rotor blade component for defects. After inspection, the method further includes activating the additive to change the pigment from a transparent finish to a colored finish.

An acoustic monitoring system and method for the health status of an offshore wind turbine and an ocean wave are provided. The acoustic monitoring system includes a first laser transmitter, a second laser transmitter, a telephoto camera provided at a hub, a vibration detection sensor provided on a tower of a wind turbine, and four acoustic detection sensors arranged at an interval of 90? along the circumference of the tower. The first and second laser transmitters are arranged at the bottom of a nacelle of the wind turbine and emit laser lights vertically downward. The first laser transmitter, the second laser transmitter, the telephoto camera, the vibration detection sensor, and the acoustic detection sensors are connected to a data acquisition and conversion module through a transmission module. The acoustic monitoring system combines laser light detection with acoustic signal feature detection to improve stability and safety of the offshore wind turbine.

A wind turbine ID marker arrangement to enable a wind turbine installation to be identified from the air, the ID marker arrangement comprising a display surface to which a pattern of tiles are removably attached.

The present subject matter is directed to methods for manufacturing rotor blades and/or components thereof of a wind turbine. In one embodiment, the method includes forming the rotor blade component and covering at least a portion of the rotor blade component with at least one coating material. In addition, the coating material includes at least one additive having a changeable pigment. After the component is formed, the method includes inspecting the rotor blade component for defects. After inspection, the method further includes activating the additive to change the pigment from a transparent finish to a colored finish.

A wind turbine ID marker arrangement to enable a wind turbine installation to be identified from the air, the ID marker arrangement comprising a display surface to which a pattern of tiles are removably attached.

A wind farm comprising a number of wind turbines arranged on a ground comprising a first ground portion having a first ground surface and an outer periphery and a second ground portion having a second ground surface and surrounding the first ground portion. The first ground portion is covered with a reflective artificial covering to provide a reflecting surface having an albedo higher than the albedo of the second ground portion and thereby generating a lower temperature and a higher pressure in the first ground portion than in the second ground portion and a wind having a speed in a direction from the first ground portion towards the second ground portion. Some of the wind turbines are arranged in the second ground portion in such a distance from the periphery of the first ground portion that they are subjected to the wind coming from the first ground portion.