Provided is a wind turbine, with at least one hollow construction including at least two longitudinal hollow elements each having a connection interface for connecting the elements either by a slip joint connection or by a flange connection especially a tower including at least two hollow tower elements, wherein at least one connector is guided through the slip joint or flange connection from an inner space to the outer of the wind turbine.

An automated system for mitigating risk from a wind turbine includes a plurality of optical imaging sensors. A controller receives and analyzes images from the optical imaging sensors to automatically send a signal to curtail operation of the wind turbine to a predetermined risk mitigating level when the controller determines from images received from the optical imaging sensors that an airborne animal is at risk from the wind turbine.

An automated system for mitigating risk from a wind turbine includes a plurality of optical imaging sensors. A controller receives and analyzes images from the optical imaging sensors to automatically send a signal to curtail operation of the wind turbine to a predetermined risk mitigating level when the controller determines from images received from the optical imaging sensors that an airborne animal is at risk from the wind turbine.

Provided is a wind turbine having at least one lighting device, which has a light source and emission device, wherein the light source and the emission device are arranged at different positions of the wind turbine, wherein at least one positioning device is provided which, by a positioning section, is coupled to the emission device in such a way that the emission device can be moved between a first position and a second position by a movement of the positioning section.

Provided is a wind turbine having at least one lighting device, which has a light source and emission device, wherein the light source and the emission device are arranged at different positions of the wind turbine, wherein at least one positioning device is provided which, by a positioning section, is coupled to the emission device in such a way that the emission device can be moved between a first position and a second position by a movement of the positioning section.

An aircraft beacon light is provided for emitting flashes of red light into an environment around an aircraft. The aircraft beacon light includes a support plate having a central portion; a plurality of LEDs, arranged on the support plate around the central portion and facing away from the support plate; an annular light splitting element, having a proximate side arranged over and facing the plurality of LEDs, wherein the proximate side has reflective portions and transmissive portions; and at least one light conditioning element for redirecting light having passed through the transmissive portions of the proximate side of the annular light splitting element.

The present disclosure provides a lighting device for reducing bird strikes and a method for reducing bird strikes in a wind farm. The lighting device includes an illuminator, and the illuminator emits red light with a wavelength of 620-750 mm. In the present disclosure, the red light with a wavelength of 620-750 mm is used as a light source of the lighting device to reduce the attraction to birds; therefore, strikes of birds on the position of the lighting device can be reduced, overcoming a longstanding technical prejudice that people have generally accepted that blue light is used as a light source for reducing bird strikes because the red light is easy to attract birds, which are too sensitive to the blue light to be attracted easily.

An automated system for mitigating risk from a wind farm. The automated system may include an array of a plurality of image capturing devices independently mounted in a wind farm. The array may include a plurality of low resolution cameras and at least one high resolution camera. The plurality of low resolution cameras may be interconnected and may detect a spherical field surrounding the wind farm. A server is in communication with the array of image capturing devices. The server may automatically analyze images to classify an airborne object captured by the array of image capturing devices in response to receiving the images.

An automated system for mitigating risk from a wind farm. The automated system may include an array of a plurality of image capturing devices independently mounted in a wind farm. The array may include a plurality of low resolution cameras and at least one high resolution camera. The plurality of low resolution cameras may be interconnected and may detect a spherical field surrounding the wind farm. A server is in communication with the array of image capturing devices. The server may automatically analyze images to classify an airborne object captured by the array of image capturing devices in response to receiving the images.

Systems and methods are disclosed for deterring wildlife, such as bats and birds, from drawing too proximate to an operating wind turbine. Wildlife species may be sensitive to transmitted frequencies, such as ultrasonic frequencies above the range of human hearing. For example, bats may avoid areas where ultrasonic frequencies are being emitted, either because the emitted ultrasonic frequency interferes with the echolocation of the bat, or because encountering the ultrasonic frequency is uncomfortable for the bat. In some aspects, acoustic transmitters may be arranged along a length of a blade of a wind turbine. A controller may direct the acoustical transmitters to transmit signals having ultrasonic frequencies to deter wildlife encounters. The controller may direct the transmitters to transmit only during periods where wildlife encounters are likely to occur (e.g. at night, during migration seasons, during favorable weather conditions, or the like).