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Improved lightning protection system for wind turbines

A wind turbine, lightning technology, applied in the field of improved wind turbine lightning protection system, which can solve the problem of transient voltage damage, destroying onboard electronic equipment, etc.

Inactive Publication Date: 2010-07-28
VESTAS WIND SYST AS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Indirect effects occur when magnetic fields and potential differences in structures sense transient voltages that can damage and even destroy onboard electronics that are not EMF (electromagnetic field) shielded or lightning protected

Method used

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  • Improved lightning protection system for wind turbines
  • Improved lightning protection system for wind turbines
  • Improved lightning protection system for wind turbines

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Embodiment Construction

[0034] According to the invention, in an improved lightning protection or LSP system for a wind turbine, a material having a higher conductivity than existing LSP materials replaces metallic materials or particles in lightning strike protection elements or diverter strips. Candidate materials include single-wall and / or multi-wall carbon nanotubes or buckypaper. The advantages are as follows:

[0035] -Materials with higher conductivity than existing LSP materials are expected to improve the attraction and guidance of lightning charges.

[0036] - The thickness of the strips made of material exhibiting higher conductivity can desirably be thinner than existing guide strips, minimizing disruption of the aerodynamic flow around the blade profile. The thickness of the strips will likely be on the order of about 100 microns. However, the strips are not limited to these dimensions.

[0037] - No changes are required to the current production process or blade design. The deflecto...

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Abstract

A system, method and software for protecting wind turbines from lightning strikes, as well as a wind turbine comprising the system for lightning protection, wherein at least one lightning strike protection element of said LSP system is ionized prior to a lightning strike, thus reducing the chance of damaging unprotected part(s) of the blade(s) of the wind turbine.

Description

technical field [0001] The present invention relates to systems, methods and software for protecting wind turbines from lightning strikes, and to wind turbines including lightning protection systems. Background technique [0002] 2002 by the National Renewable Energy Laboratory (B. McNiff, Wind Turbine Lightning Protection Project 1999-2001, National Renewable Energy Laboratory (NREL), U.S. Department of Energy, Golden, CO, USA) (B. McNiff, Wind Turbine Research published by the Lightning Protection Project1999-2001, National Renewable Energy laboratory (NREL), U.S. Dept. of Energy, Golden, CO, USA) shows that about 8 out of every 100 wind turbines may be accidentally hit by a direct lightning strike once a year . According to the statistics provided by IEC TR61400-24, 7-10% of the damage caused by lightning is rotor blades (IEC TR61400-24, Wind Turbine Generator Systems, Part 24: Lightning Protection, International Electrotechnical Commission, First Edition 2002-07 ) (IEC...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F03D1/06F03D11/00H02G13/00
CPCH02G13/00Y02E10/726F03D11/0033Y02E10/721Y02E10/722F03D80/30H02G13/20Y02E10/72
Inventor S·那拉希马卢Y·原口E·M·沃特森
Owner VESTAS WIND SYST AS
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