Wind Turbine Blade having a Conductive Root Bushing

摘要

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.

主权项

1. A blade for a wind turbine, the blade having a tip end and a root end, the blade comprising:
at least one lightning receptor conductively coupled to a lightning down conductor provided in the blade; and a plurality of root bushings provided at said root end, wherein said down conductor is conductively coupled to at least one of said root bushings to provide a conductive path to ground for said down conductor, wherein said blade comprises a shell body, said blade further comprising an external conductive element provided on an external surface of said shell body at said root end, wherein said external conductive element is conductively coupled with said down conductor through said at least one of said bushings to provide a conductive path to ground for said down conductor.