AN EARTING SYSTEM FOR A WIND TURBINE CONNECTED TO A UTILITY GRID AND FOR A WIND TURBINE PARK

摘要

The invention relates to an earthing system for a wind turbine connected to a utility grid. The wind turbine comprises at least one electric system such as low or high voltage power systems and cables (16), at least one control system such as a SCADA system and control cables (18), and/or at least one safety system such as a lightning protection system, wherein a connection to an electrically earth potential is established from one defined place (12) within the wind turbine for said systems. In another embodiment, a wind turbine comprises at least two electric systems such as a lightning protection system and a low or high voltage power system, an electrically earth potential established by at least one foundation earthing (8) including at least one earthing wire embedded partly or totally in the wind turbine foundation (6), and at least one electric conducting means (9) extending radial from said wind turbine (1) into the ground, wherein a connection to said electrically earth potential is established from one defined place within the wind turbine (1) for said systems. Even further the invention relates to an earthing system for a wind turbine park.