Electromagnetic grounding arrangement
AssigneeSiemens Aktiengesellschaft
InventorHenrik Abild Jensen
Life of this patent
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Abstract
Provided is an electromagnetic grounding arrangement for power cables of a wind turbine that includes a tower mounted on a foundation, which electromagnetic grounding arrangement includes an electrically conductive sheet including at least one aperture through which a power cable passes; a first current path from a jacket of the power cable to the electrically conductive sheet; and a second current path from the electrically conductive sheet to ground.
Claims12
An electromagnetic grounding arrangement for power cables of a wind turbine that comprises a tower mounted on a foundation, the electromagnetic grounding arrangement comprising:
- an electrically conductive sheet comprising at least one aperture through which a power cable passes;
- a first current path formed by an electrical connection between a jacket of the power cable and the electrically conductive sheet, the jacket being connected to the electrically conductive sheet over an entire circumference of the power cable;
- and
- a second current path from the electrically conductive sheet to ground;
- wherein the electrically conductive sheet is a metal mesh;
- wherein the first current path is effected by an electrically conductive tube dimensioned to fit about the power cable;
- wherein the electrically conductive tube comprises a metal flange extending outward from a base of the electrically conductive tube connected to the electrically conductive sheet.
A method of reducing electromagnetic emissions arising from power cables of a wind turbine, of the method comprising:
- providing an electrically conductive sheet, wherein the electrically conductive sheet is a metal mesh;
- forming at least one aperture to permit a power cable to pass through the electrically conductive sheet;
- electrically connecting a power cable jacket to the electrically conductive sheet such that the jacket is connected to the electrically conductive sheet over an entire circumference of the power cable thereby forming a first current path;
- and
- connecting the electrically conductive sheet to ground, thereby forming a second current path;
- wherein the first current path is effected by an electrically conductive tube dimensioned to fit about the power cable;
- wherein the electrically conductive tube comprises a metal flange extending outward from a base of the electrically conductive tube connected to the electrically conductive sheet.
Dependencies are inferred from the claim text.