Method of lightning proofing a blade for a wind-energy plant

A technology for wind energy equipment and lightning protection, which is applied in the field of wind energy equipment and lightning protection blades, can solve problems such as damage, achieve good electrical connection, and avoid the effect of blade processing procedures

Active Publication Date: 2006-11-22
LM GLASSFIBER
View PDF3 Cites 20 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Another problem is that although the lightning current is captured by the receiver and conducted to the arrester, conductive fibers in the laminate can allow the current to pass into the laminate and cause damage

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method of lightning proofing a blade for a wind-energy plant
  • Method of lightning proofing a blade for a wind-energy plant
  • Method of lightning proofing a blade for a wind-energy plant

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0036] figure 1The illustration shows a blade 1 for a wind energy installation. The blade 1 comprises a blade shell 2 which forms the aerodynamically active part of the blade. The blade shell 2 comprises an upper main laminate 7 by which an essential part of the strength and rigidity of the blade is achieved. For supporting purposes, two substantially longitudinally extending beams 3 are arranged inside the blade. The leading and trailing edges of the blades are denoted by reference numerals 15 and 16 respectively. As part of the lightning protection method of the blade 1 shown, a metal receiver 4 is provided at the outer surface of the blade shell 2 . The term "receiver" is to be understood as an electrically conductive object configured for the purpose of capturing and conducting lightning currents. The receiver 4 is connected to a lightning arrester 9 via a connection 8 . The receiver 4, the connection 8 and the arrester 9 are metallic objects configured to be able to ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention relates to a method of lightning-proofing a blade (1) on a wind-energy plant, which blade comprises a blade shell (2) configured essentially as a fibre-reinforced laminate, which laminate comprises electrically conductive fibres, wherein the blade comprises at least one lightning arrester (9) configured for conducting lightning current, including preferably to ground. The method comprises that the electrically conductive fibres are connected to each other, and that at least one metallic receptor (4, 24, 25) is arranged for capturing lightning current at or in proximity of the external face of the blade; and that the receptor and the fibres are connected to the lightning arrester for equalising the difference in potential between the lightning arrester and the electrically conductive fibres. When the electrically conductive fibres are connected to each other, the fibres will cooperate on the conduction of a possible lightning current to prevent the current from running in individual fibres. Simultaneously the metallic receptor will serve as the primary lightning capturing device and reduce the risk of lightning striking the laminate. The receptor being connected to the lightning arrester, the current will predominately be conducted to ground, while the risk of transfer to the laminate is minimised in that a possible difference in potential between fibres and lightning arrester has been equalised.

Description

technical field [0001] The invention relates to a lightning protection method for a blade of a wind energy installation, said blade comprising a blade shell substantially constructed as a fibre-reinforced laminate containing electrically conductive fibers, wherein The blade comprises at least one lightning arrester configured to conduct lightning current, preferably to earth. Furthermore, the invention also relates to a lightning protection blade and a wind energy installation. Background technique [0002] It should be known that blades for wind power installations are equipped with lightning receptors which are electrically connected inside the blades to a metallic lightning arrester capable of grounding the lightning current. An example of this is described in EP 0783629 B1, which is hereby incorporated by reference. Furthermore, it is known from WO 00 / 14405 to use carbon fibers in laminates for blades of wind energy installations. The disclosure content of this docume...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): F03D11/00H02G13/00
CPCH02G13/00H02G13/80H02G13/40F03D80/30Y02E10/72
Inventor L·B·汉森
Owner LM GLASSFIBER
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap