Provided is a blade for a wind turbine including at least one blade component, wherein at least one section of the blade component facing the tip of the blade is carbon fiber reinforced, wherein the blade further includes a lightning protection arrangement with a discharging conductor extending along the blade to discharge an electric current caused by a lightning striking into the blade, wherein the lightning protection arrangement includes at least one, electrically conductive, elongated and flat lightning receptor which is electrically connected with the discharging conductor, wherein the lightning receptor is arranged at or near the outer surface of the blade and located between the at least one blade component section and the blade tip and extends at least partially from a trailing edge towards a leading edge of the blade.

A lightning protection system for a wind turbine blade having-a structural element made of fiber reinforced polymer (FRP). The lightning protection system includes a first down conductor extending from a tip end to a tip connection block and a second down conductor extending from the tip connection block between and along the structural element and a pressure side towards a root connection block. A third down conductor extending from the tip connection block between and along the structural element and a suction side towards the root connection block. The second down conductor includes a first expanded foil or a first mesh and the third down conductor includes a second expanded foil or a second mesh. The first expanded foil or first mesh and the second expanded foil or second mesh include a plurality of conductive connection points arranged in the vicinity of the tip and root connection blocks.

The segments of a segmented wind turbine rotor blade are screwed together at respective connection ends via a plurality of connecting bolts. Sleeve-shaped pressure pieces are arranged between the rotor blade segments, each of which is mounted on a connecting bolt. A plurality of first metal sheets is provided, each first metal sheet being arranged between a respective connection end and several pressure pieces, so that an electrically conductive connection is formed between several pressure pieces via a first metal sheet. The first metal sheets, which are associated with the first connection end, are each arranged along the circumference of the rotor blade offset from the first metal sheets, which are associated with the second connection end. Further, a metal sheet for a segmented wind turbine rotor blade is disclosed.

A conductive connection between a Carbon Fiber Reinforced Polymer (CFRP) element and one or more down conductor(s), the CFRP element being electrically conductive and has a face. The conductive connection including an interface conductive patch provided on the face of CFRP element for electrically connecting the CFRP element with the interface conductive patch, the interface conductive patch is electrically connected with the one or more down conductor(s).

There is provided a wind turbine blade having a root end, a tip end, a blade shell, a lightning protection system and an integrated web-down conductor. The integrated web-down conductor comprises: a down conductor forming part of the lightning protection system: electrical insulation surrounding the down conductor; and a web that surrounds the electrical insulation so as to enclose the down conductor and electrical insulation and is coupled to the blade shell.

Disclosed a wind turbine blade comprising a main laminate and a method for manufacturing a main laminate for a wind turbine blade. The wind turbine blade extends in a longitudinal direction from a root to a tip and comprising a pressure side, a suction side and a chord line extending between a leading edge and a trailing edge. Particularly, lightning protection of such main laminate is disclosed.

A wind turbine blade having a blade shell with a lightning protection system. The lightning protection system has a first metal layer at an outer surface of the blade shell and a second metal layer at the outer surface of the blade shell and stacked on the first metal layer to form intimate electrical contact with the first metal layer at a multiple-thickness region.

A wind turbine blade including two electrically conductive spar caps, two lightning down conductor arrangements, and a further electrical conductor, wherein the spar caps and the lightning down conductor arrangements extend along a spanwise direction of the blade at least between a root-side end portion and a tip-side end portion of the blade, wherein each of the spar caps is electrically connected to only one of the lightning down conductor arrangements within a section of the blade between the root-side end portion and the tip-side end portion, wherein the further electrical conductor is electrically connected within the section to only one of the spar caps and/or to only one of the lightning down conductor arrangements at one or more connection positions is provided.

Wind turbine rotor blade comprising a shell (13), a web structure (14), and a lightning down conductor arrangement (6), wherein the rotor blade (2) extends in a spanwise direction between a tip-side end (10) and a root-side end (9), wherein the web structure (15) is made from at least one fiber-laminate-based structure, wherein the lightning down conductor arrangement (6) comprises at least one web terminal (16) at least partly embedded in the web structure (15) and at least one root-side end terminal (8) arranged in a root-side end portion of the shell (13) in a spanwise distance to the web terminal (16), wherein the root-side end terminal (8) is connected to the web terminal (16) by an end conductor (19) arranged at the inner surface (20) of the shell (13).

The invention describes a lightning receptor assembly (1) for a wind turbine rotor blade (20), comprising a receptor unit (10R, 10B) comprising a receptor base (10B) for installation in the rotor blade interior (200) and a receptor (10R) for placement at an outer surface (20S) of the rotor blade (20); a threaded connector (11) to form a mechanical connection between the receptor (10R) and the receptor base (10B); and a conductive band (12) adapted to extend over the outer surface (20S) of the rotor blade (20) and to form an electrical connection to the receptor unit (10R, 10B) without requiring removal of the receptor (10R) from the receptor base (10B). The invention further describes a wind turbine (2) and a method of preforming a maintenance procedure on a lightning receptor assembly (1) of a rotor blade (20) of a wind turbine (2).