Direct lightning strike protecting device of wind power generator set blade

A technology for wind turbines and generators, applied in wind turbine components, wind turbines, wind power generation, etc., can solve problems such as damage to electronic equipment, poor operation of bearing balls, huge costs for disassembly and replacement of damaged parts, etc. Achieve the effect of reducing lightning strikes, preventing the formation of lightning ionization channels, and reducing the formation of lightning strikes

Inactive Publication Date: 2010-09-15
SHANDONG MASTER ELECTRIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Wind blades are the most expensive equipment in wind turbines. If they are struck by lightning, in addition to losing the power generated during the repair period, they will also have to bear the huge cost of disassembly and replacement of damaged parts
[0004] The existing wind blade direct lightning protection is mostly solved by installing a lightning receptor at the tip of the blade, but after the lightning receptor is lightning, the lightning current will flow through the main bearing and the engine room when it enters the ground, and the bearing balls will rotate due to the welding effect At the same time, a large number of electronic equipment in the cabin will also be damaged due to electromagnetic interference generated by lightning flowing into the ground

Method used

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  • Direct lightning strike protecting device of wind power generator set blade
  • Direct lightning strike protecting device of wind power generator set blade
  • Direct lightning strike protecting device of wind power generator set blade

Examples

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example 1

[0016] Example 1, a wind turbine blade direct lightning protection device, refer to figure 1 , figure 2 , image 3 , Is an aluminum sheet 4 embedded in the axial direction of the blades of the generator set. The aluminum sheet 4 is connected with a multi-discharge tip 2 and the two ends of the multi-discharge tip 2 respectively extend out of both sides of the generator blade 5. Both ends of 2 are in the shape of needle teeth, and the aluminum sheet 4 is grounded through the cable 3, which constitutes a structure of the present invention.

example 2

[0017] Example 2, a wind turbine blade direct lightning protection device, refer to figure 2 , image 3 , Figure 4 , Is on the basis of embodiment 1, the edge of the generator set blade 5 is provided with a discharge tip 1, and the discharge tip 1 of the edge of the generator set blade 5 is tooth-shaped, and the others are exactly the same as in the example 1.

example 3

[0018] Example 3, a wind turbine blade direct lightning protection device, refer to figure 2 , image 3 , Figure 5 , Is on the basis of embodiment 1, the edge of the generator set blade 5 is provided with a discharge tip 1, and the discharge tip 1 of the edge of the generator set blade 5 is needle-shaped, and the others are exactly the same as in the example 1.

[0019] When the present invention is used, the discharge tip 1, the multi-discharge tip 2, the cable 3, and the aluminum sheet 4 constitute a direct lightning protection device for the fan blade, wherein the discharge tip 1, the multi-discharge tip 2 constitute a charge dissipating device, when the discharge tip 1, When the charge of the multi-discharge tip 2 accumulates to a certain extent, the ionized air will form a corona. The discharge tip 1, the multi-discharge tip 2 are equipotentially connected to the fan blade flange through the cable 3, thereby effectively avoiding the ground charge on the surface of the wind ...

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Abstract

The invention discloses a direct lightning strike protecting device of a wind power generator set blade, which comprises a power generator set blade, wherein an aluminum sheet is arranged in the power generator set blade in advance; a multi-discharge tip end is connected to the aluminum sheet, and both ends of the multi-discharge tip end extend out of the edge of the power generator set blade side; both ends of the multi-discharge tip end are in needle tooth shapes; and the aluminum sheet is grounded by a cable. The invention has the characteristics of effectively protecting the wind power generator set blade, preventing earth charge from accumulating on the blade by high-frequency and small-energy tip end discharge and preventing or reducing the direct lightning strike from directly striking the blade.

Description

technical field [0001] The invention belongs to the technical field of lightning strike protection equipment, and in particular relates to a direct lightning strike protection device for blades of a wind power generating set. Background technique [0002] As a clean renewable energy power generation method, wind power has been more and more welcomed and valued by people all over the world. In recent years, China has become the most active wind power market in the world. [0003] Due to the requirements of the wind power environment for the wind turbine, the location is extremely vulnerable to lightning strikes, and the blades are located at the highest position, so they are the most vulnerable equipment in the wind turbine to be struck by direct lightning. Wind blades are the most expensive equipment in wind turbines. If they are struck by lightning, in addition to the loss of power generated during the repair period, they will also have to bear the huge cost of disassembly ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F03D11/00H02G13/00F03D80/30
CPCY02E10/722Y02E10/72
Inventor 于彩霞王培波邹海华
Owner SHANDONG MASTER ELECTRIC
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