Lightning protection system for a wind turbine blade

一种风力涡轮机、避雷系统的技术，应用在风力发动机、风力发电机组件、发动机等方向，能够解决复杂、昂贵等问题，达到减少噪声发射的效果

Active Publication Date: 2008-12-31
LM GLASSFIBER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this is a relatively expensive and complex solution

Method used

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  • Lightning protection system for a wind turbine blade
  • Lightning protection system for a wind turbine blade
  • Lightning protection system for a wind turbine blade

Examples

Experimental program
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Embodiment Construction

[0027] Preferably, the invention relates to wind turbines of those types known in the industry as wind turbines according to the "Danish Concept". Typically, such wind turbines include a tower, a nacelle with gears and generators, and a rotor including a hub and three blades, wherein the rotor shaft is substantially horizontal.

[0028] Existing lightning protection systems for blades on wind turbines according to the "Danish Concept" often use a configuration in which a so-called "air receptor" made of conductive material is provided at the tip of the blade. This air-termination can "catch" the lightning strike and conduct current through the lightning conductors, which extend longitudinally of the blade and are grounded via the hub. Typically, the lightning receptor is connected to one side of the anchoring block, while the lightning conductor is connected to the other side of the same anchoring block. This configuration has been found to provide effective protection agains...

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PUM

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Abstract

The invention relates to a lightning protection system for a wind turbine blade, where the blade is a shell body made of a composite material and comprises a root area and a tip end. The lightning protection system comprises at least one lightning receptor arranged freely accessible in or on the shell unit surface on or in the immediate vicinity of the tip of the blade, and a lightning conductor made of electrically conductive material extending within the shell body along substantially the entire longitudinal direction of the blade. The lightning receptor and the lightning conductor are electrically connected by means of a connection area. The lightning conductor in its entire longitudinal direction as well as the connection area between the lightning conductor and the lightning receptor are electrically insulated in order to prevent lightning striking through the surface of the blade.

Description

technical field [0001] The present invention relates to a lightning protection system for wind turbine blades, wherein the blade is a shell made of composite material and comprises a root region and a tip, and wherein the lightning protection system comprises at least one device arranged at the tip of the blade Lightning receptors freely usable in / on the surface of the shell at or in the immediate vicinity of the blade tip and lightning conductors of conductive material extending in the shell along substantially the entire longitudinal direction of the blade, and wherein The lightning receptor and the lightning conductor are electrically connected together via a connection area. Background technique [0002] It is known to use blades with lightning protection systems to protect them from lightning strikes. For example, WO96 / 07825 discloses a lightning protection system in which the tip of the blade is fitted with a so-called lightning receptor made of conductive material. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F03D11/00
CPCF03D80/30F05B2240/307Y02E10/72
Inventor L·B·汉森
Owner LM GLASSFIBER
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