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Wind turbine thunder expelling protective device

A technology for wind turbines and protective devices, which is applied to wind turbines, wind turbines that are consistent with the wind direction, and wind energy power generation, etc., can solve the problem that the effective lightning strike rate of the blade lightning protection system is low, and the blade lightning protection design has not been verified by lightning strike design. , The proportion of blade loss due to lightning increases, etc.

Pending Publication Date: 2017-05-31
方圆电气股份有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main reason for the current increase in the proportion of blade losses due to lightning is that the lightning protection design of the blade has basically not been verified by lightning strike design, the effective lightning connection rate of the blade lightning protection system is low, and the design redundancy of the lightning receptor is insufficient.

Method used

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  • Wind turbine thunder expelling protective device
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  • Wind turbine thunder expelling protective device

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Embodiment Construction

[0033] Below in conjunction with accompanying drawing and embodiment the present invention will be further described:

[0034] Such as Figure 1-9 As shown in the figure, a lightning protection device for a wind-driven generator includes a lightning-repelling metal sheet 2 installed at the end of a wind-driven generator blade 1, and the end of the blade 1 away from the lightning-repelling metal sheet 2 is installed with a lightning-repelling metal sheet 2 connected to it. The plasma generator 3, the plasma generator 3 is connected to the ground through the inside of the tower 4 through the grounding wire 5 arranged in the blade 1, and the lightning-repelling metal sheet 2 and the plasma generator 3 are designed at the end of the blade 1 to realize passive Take the initiative to reject mine.

[0035] The plasma generator 3 is a passive plasma generator, including a metal housing 301 fixedly connected to the inner wall of the blade 1. The metal housing 301 is connected to the l...

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Abstract

A wind turbine thunder expelling protective device comprises a thunder expelling metal piece installed at the end of a wind turbine blade. A plasma generator connected with the thunder expelling metal piece is installed at the end, far away from the thunder expelling metal piece, in the blade and is connected with the ground through a grounding wire arranged in the blade and through the inside of a tower truss. The thunder expelling metal piece and the passive plasma generator are designed at the end of the blade, so that passive active thunder resistance is achieved. A metal outer cover, an insulator and an electrode are designed, so that under the action of a thundercloud electric field, plasma is generated through high-voltage air ionization, ions opposite to cloud charges are transferred to the outside world through the thunder expelling metal piece to eliminate the cloud charges, and thus the purpose of passive thunder resistance is achieved without the influence of grounding resistance.

Description

[0001] Technical field: [0002] The invention relates to the technical field of lightning protection, in particular to a lightning protection device for a wind power generator. [0003] Background technique: [0004] Wind energy is a renewable and clean energy, and using wind power to generate electricity is currently the most mature technology and the most qualified power resource for large-scale development. As the single-unit capacity of wind turbines increases, in order to absorb more wind energy, the height of the wind turbine increases with the height of the hub and the diameter of the impeller, and the risk of lightning strikes continues to increase. Lightning strikes have become a natural hazard for wind turbines. Run the most dangerous natural disasters. When a lightning strike occurs, the lightning current is conducted to the ground through all wind turbine components. Since the wind turbine is located in a high wind area, it is usually located on a hill or ridge, a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F03D80/30F03D1/06
CPCF03D1/0675Y02E10/72
Inventor 李先举李先众李世伟姚春林申玉超
Owner 方圆电气股份有限公司
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