Abstract: The present invention relates to a method of manufacturing a wind turbine blade shell component (38), the method comprising the steps of providing a plurality of abraded pultrusion plates (64) having abraded edges, arranging the abraded pultrusion plates (64) in layers on blade shell material (89) in a mould (77) for the blade shell component, the layers being separated by electrically conductive interlayers, and bonding the abraded pultrusion plates (64) with the blade shell material to form the blade shell component, wherein each pultrusion plate (64) is formed of a pultrusion fibre material comprising glass fibres and carbon fibres. The invention also relates to a reinforcing structure for a wind turbine blade, the reinforcing structure comprising a plurality of pultrusion plates according to the present invention.

Abstract: The present invention relates to a protective cap for protecting a leading edge of a wind turbine blade. The protective cap comprises first and second attachment portions for attaching the protective cap to a suction side and a pressure side of the wind turbine blade and comprises a first metal layer and a second metal layer, the first and second metal layers extending between the first and the second attachment portions, and the first metal layer and the second metal layer are at least partly spaced apart. A wind turbine blade with a protective cap is also provided. Methods for manufacturing a protective cap and a wind turbine blade with a protective cap are also provided.

Abstract: The present invention relates to a wind turbine blade comprising a lightning protection system with at least one tip end lightning receptor arranged at an outer surface of the blade and a down conductor extending within the blade. The blade comprises carbon fibre reinforced spar caps, wherein electrically conductive meshes are connected between the respective tip end of each spar cap to the tip end lightning conductor.

Abstract: Disclosed is a wind turbine blade with a connecting element for a lightning protection system of the wind turbine blade. The connecting element comprising: a root end part configured to be mechanically and electrically connected to a root region of the wind turbine blade; and a conductor part comprising a first conductor part and a second conductor part, wherein the first conductor part is configured to receive and electrically connect to a stripped part of the down conductor and the second conductor part is configured to receive and mechanically connect to an insulated part of the down conductor.

Abstract: A method for repairing or improving a lightning protection system of a rotor blade of a wind turbine having a blade root and a blade tip includes identifying a repair or improvement location in the lightning protection system of the rotor blade. The method includes removing one or more layers of material at the repair or improvement location that form part of a shell of the rotor blade so as to expose existing conductive material in the rotor blade. The method also includes placing a conductive layer of material atop the repair or improvement location such that a root-side edge of the conductive layer overlaps the existing conductive material. Moreover, the method includes electrically connecting the root-side edge of the conductive layer with the existing conductive material and a tip-side edge of the conductive layer of material with the blade tip. The method further includes covering the conductive layer with an outer covering.

Abstract: Disclosed is a wind turbine blade comprising a shell body, a down conductor arranged in the shell body for conducting lightning current to ground, an electrical connector arranged in electrical connection with the down conductor, a lightning receptor element arranged at a surface of the shell body or outside the shell body, the lightning receptor element being in electrical connection with the electrical connector. A method for manufacturing a wind turbine blade with a lightning protection system is also provided.

Abstract: A noise reduction element extends between a first end and a second end in a first direction. The noise reduction element extends between a third end and a fourth end in a second direction perpendicular to the first direction. The noise reduction element includes a base part configured to be attached to a trailing edge of a wind turbine blade. The base part has a first base part surface and a second base part surface. The base part extends between the first end and a first position in the first direction. The noise reduction element includes a first serration part having a serration pressure surface and a serration suction surface and extending in the first direction between the first position and the second end. The first serration part has a thickness in a third direction between the serration pressure surface and the serration suction surface.

Abstract: The invention relates to a wind turbine blade being a shell body made of a composite material and having a root end and a tip end, an outer surface, a pressure side and a suction side, a trailing edge and a leading edge, and additionally a lightning protection system. The lightning protection system comprising at least one lightning receptor provided with an outer surface arranged freely accessible in, on or at the outer surface of the blade at the tip end of the blade and a lightning conductor made of electrically conductive material extending within the shell body along substantially the entire longitudinal direction of the blade. The lightning receptor and the lightning conductor are electrically connected by means of a connection area. At least a part of the outer surface, optionally the whole of the outer surface of the receptor being freely accessible is formed of carbon such as graphite.

Abstract: Disclosed is a wind turbine blade comprising a shell body, a down conductor arranged in the shell body for conducting lightning current to ground, an electrical connector arranged in electrical connection with the down conductor, a lightning receptor element arranged at a surface of the shell body or outside the shell body, the lightning receptor element being in electrical connection with the electrical connector. A method for manufacturing a wind turbine blade with a lightning protection system is also provided.

Abstract: Disclosed is a wind turbine blade with a connecting element for a lightning protection system of the wind turbine blade. The connecting element comprising: a root end part configured to be mechanically and electrically connected to a root region of the wind turbine blade; and a conductor part comprising a first conductor part and a second conductor part, wherein the first conductor part is configured to receive and electrically connect to a stripped part of the down conductor and the second conductor part is configured to receive and mechanically connect to an insulated part of the down conductor.

Abstract: The present invention relates to a wind turbine comprising a lightning protection system comprising a waveguide interconnecting a communication device and a signal-carrying structure. In other aspects, the present invention relates to the use of a waveguide in a lightning protection system of a wind turbine, a power splitter and its use in a lightning protection system of a wind turbine.

Abstract: A wind turbine blade is described having a lightning protection system, wherein the lightning protection system is arranged to protect conductive elements or modules used in or on the blade. In one aspect, the lightning protection system comprises a conductive band to be arranged around the circumference of the blade at the location of an internal conductive module, to prevent a lightning strike from penetrating the blade and potentially damaging the internal module. In another aspect, the lightning protection system comprises a lightning down-conductor having a signal-carrying structure, e.g. a signal cable, power cable, or a waveguide, integrated into the down-conductor. In a further aspect, the lightning protection system comprises at least one lightning receptor arranged to protect externally-mounted antennas from lightning strikes.

Abstract: A wind turbine blade comprising a system for monitoring the deflection of a wind turbine blade is described. The system comprises a wireless range-measurement system, having at least one wireless communication device located towards the root end of the blade and at least one wireless communication device located towards the tip end of the blade and internally within the blade body. Radio absorbing material is arranged internally in the blade body in the wireless communication path between the root-and tip devices.

Abstract: A wind turbine blade is described having a lightning protection system wherein a lightning down conductor is conductively coupled to at least one blade root bushing provided at the root end of the blade. The use of the blade root bushing as part of the conductive path of the lightning protection system allows for a structurally sound and reliable connection of an internal down conductor to an external lightning protection system and/or to a suitable ground connection at the blade root end.

Abstract: A wind turbine blade is described having a lightning bypass system located at the root end of the blade. The lightning bypass system comprises a stay bolt formed from an electrically insulating material having a conductive core. The conductive core of the stay bolt provides a conductive path for a lightning down conductor system through the root end of a wind turbine blade to the turbine hub or nacelle, bypassing any sensitive root end components of the wind turbine blade.

Abstract: The present invention relates to a wind turbine comprising a lightning protection system comprising a waveguide interconnecting a communication device and a signal-carrying structure. In other aspects, the present invention relates to the use of a waveguide in a lightning protection system of a wind turbine, a power splitter and its use in a lightning protection system of a wind turbine.

Abstract: A wind turbine blade is described having a lightning protection system, wherein the lightning protection system is arranged to protect conductive elements or modules used in or on the blade. In one aspect, the lightning protection system comprises a conductive band to be arranged around the circumference of the blade at the location of an internal conductive module, to prevent a lightning strike from penetrating the blade and potentially damaging the internal module. In another aspect, the lightning protection system comprises a lightning down-conductor having a signal-carrying structure, e.g. a signal cable, power cable, or a waveguide, integrated into the down-conductor. In a further aspect, the lightning protection system comprises at least one lightning receptor arranged to protect externally-mounted antennas from lightning strikes.

Abstract: A wind turbine blade is described having a lightning bypass system located at the root end of the blade. The lightning bypass system comprises a stay bolt formed from an electrically insulating material having a conductive core. The conductive core of the stay bolt provides a conductive path for a lightning down conductor system through the root end of a wind turbine blade to the turbine hub or nacelle, bypassing any sensitive root end components of the wind turbine blade.

Abstract: A wind turbine blade with a lightning protection for a blade with a shell body has at least one lightning receptor arranged freely accessible in or on a surface of the shell body surface, and a lightning down conductor electrically connected to the lightning receptor and comprising an inner conductor made of electrically conductive material imbedded in a bedding insulation made of an electrically non-conductive material. The lightning down conductor further includes a first conductive layer having a resistance in the range of 10 to 10,000 Mega Ohm per meter (M?/m). The first conductive layer is located in a transverse distance from the inner conductor and being electrically isolated from the inner conductor.

Abstract: The invention relates to a wind turbine blade with a lightning protection system, the lightning protection system comprises at least one lightning receptor arranged freely accessible in or on the shell unit surface at or in the immediate vicinity of the tip of the blade. The lightning protection system further comprises a lightning down conductor made of electrically conductive material extending within the shell body from the lightning receptor to the root end of the blade. The lightning receptor and the lightning down conductor are electrically connected. The shell body comprises at least a first conductive layer extending along at least a longitudinal part of the lightning down conductor in a transverse distance therefrom. The first conductive layer is electrically isolated from the lightning down conductor and from the lightning receptor, and has a sheet resistance in the range 1-5 Mega Ohm per square.