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Method for providing wind turbine blade with lightning protection and wind turbine blade

A technology for wind turbines and lightning protection, which is applied to wind turbines, wind turbines in the same direction as the wind, and wind power generation, and can solve problems such as increased damage.

Pending Publication Date: 2020-09-22
SIEMENS GAMESA RENEWABLE ENERGY AS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

While such changes generally do not impair the integrity or performance of the wind turbine blades and wind turbine, they increase the potential for damage caused by lightning strikes

Method used

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  • Method for providing wind turbine blade with lightning protection and wind turbine blade
  • Method for providing wind turbine blade with lightning protection and wind turbine blade
  • Method for providing wind turbine blade with lightning protection and wind turbine blade

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0048] figure 1 A flow chart is shown showing a method for providing lightning protection for a wind turbine blade 1 .

[0049] In step S1, a lightning shield 2 is provided (see figure 2 ). The lightning shield 2 includes a non-conductive medium 3 and a conductive medium 4 embedded in the non-conductive medium 3 . According to the present embodiment, the conductive medium 4 is a metal mesh and the non-conductive medium 3 is a polymer foam.

[0050] In step S2, the blade body 5 of the wind turbine blade 1 is provided (see image 3 ). The blade body 5 is made of a fiber composite material comprising fibers bonded to each other using a resin, in particular an epoxy-based resin. The blade body 5 is manufactured by a hot pressing process.

[0051]In step S3 the lightning shield 2 is attached to the outer surface of the blade body 5 , especially on top of the defect area 9 . This is done for example by bending the lightning shield 2 to follow the shape of the blade body 5 an...

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Abstract

A method for providing a wind turbine blade (1) with lightning protection, the method comprising the steps of: providing a lightning protection cover (2) comprising a non-conductive medium (3) and a conductive medium (4) embedded in the non-conductive medium (3), providing a blade body (5), and attaching the lightning protection cover (2) to the blade body (5).An effective lightning protection isthus provided.

Description

technical field [0001] The invention relates to a method for providing lightning protection for a wind turbine blade and a corresponding wind turbine blade. Background technique [0002] Lightning damage is one of the main drivers of the operation and maintenance costs of wind turbine blades during operation, as even wind turbine blades with fully functional lightning protection systems may suffer damage during lightning events. [0003] Typical damage can range from cosmetic to compromising the structural integrity of the wind turbine blade. Such damage may require repair work on the wind turbine blades using expensive and time-consuming cranes. [0004] Furthermore, changes in the production of wind turbine blades may potentially increase the risk of lightning damage to the wind turbine blades. Variations can be random or systematic and can be represented by air pockets in the laminate of the wind turbine blade or by castings in foreign objects. While such changes gener...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F03D1/06F03D80/30F03D80/00
CPCF03D1/0675F03D80/30F03D80/00F03D80/50F05B2230/80Y02E10/72Y02P70/50
Inventor M.梁
Owner SIEMENS GAMESA RENEWABLE ENERGY AS
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