Lightning protection system for wind turbine blades with an effective injection area to carbon fiber laminates and a balanced lightning current and voltage distribution between different conductive paths

A lightning protection system for a wind turbine blade comprising at least a lightning receptor connected to one or more down conductors of a grounding arrangement of the wind turbine blade and one or two carbon fiber laminates;

• the down conductors being equipotentialized with the carbon fiber laminates by one or more auxiliary cables which are connected to conductive plates embedded in the carbon fiber laminates at various points along the wind turbine blade;
• wherein the lightning protection system further comprises at least one local lightning current injection area in the carbon fiber laminates associated to one auxiliary cable having one or more additional parallel conductive paths comprising secondary cables derived from said auxiliary cable and connected to conductive devices embedded in the carbon fiber laminates which are configured for avoiding overcurrents in the carbon fiber laminates, wherein the lightning protection system further comprises at least two conductive devices having different resistances in one local lightning current injection area.