Lightning protection system for wind power generation device

A technology for a wind power generation device and a lightning protection system, which is applied in the field of lightning protection systems, can solve the problems of generator insulation breakdown, damage to the blades of wind turbines, burning of control components, etc.

Inactive Publication Date: 2017-05-31
YUNNAN ENERGY INVESTMENT HAIZHUANG NEW ENERGY EQUIP
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  • Abstract
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AI Technical Summary

Problems solved by technology

The huge energy released by lightning will cause damage to wind turbine blades, generator insulation breakdown, and burnout of control components, etc.

Method used

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  • Lightning protection system for wind power generation device

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Embodiment Construction

[0010] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0011] see figure 1 , in an embodiment of the present invention, a lightning protection system for a wind power generation device includes an electric field shielding box 5 installed outside the wind turbine unit 2, wherein the top of the electric field shielding box 5 is installed with a lightning receptor 3, wherein the lightning The height of the top of the needle 3 is greater than the height of the wind turbine blade 1; the lightning ball 4 is also install...

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Abstract

The invention discloses a lightning protection system for a wind power generation device. The system comprises an electric field shielding box mounted on the outer side of a wind turbine unit, wherein a lightning rod is mounted a the top of the electric field shielding box, and the top end height of the lightning rod is larger than the height of blades of the wind turbine unit; a lightning ball is further mounted on the lightning rod; an earthing wire is connected with the bottom of the lightning rod and mounted in the electric field shielding box, and a composite structure is adopted in the electric field shielding box. The lightning rod and the lightning ball are used for effectively triggering lightning, and the electric field shielding box is arranged close to the wind turbine unit, thus, burning of internal circuit elements in the wind turbine unit can be avoided even if high currents of the earthing wire leak.

Description

technical field [0001] The invention relates to wind power generating equipment, in particular to a lightning protection system for a wind power generating device. Background technique [0002] Due to the rapid development of modern science and technology, the single-unit capacity of wind turbines is increasing. In order to absorb more energy, the height of the hub and the diameter of the impeller increase, which also increases the risk of being struck by lightning. It is one of the most harmful disasters to the safe operation of wind turbines. The huge energy released by lightning can cause damage to wind turbine blades, generator insulation breakdown, and burnout of control components. The terrain in my country's coastal areas is complex, and there are many thunderstorm days. Full attention should be paid to the huge threat brought by lightning strikes to wind turbines and operators. For example, there have been many lightning strikes since the Red Bay Wind Farm was put ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F03D80/30
CPCY02E10/72
Inventor 沈中渝龙乔林周永全许坤明展娅琼张敏
Owner YUNNAN ENERGY INVESTMENT HAIZHUANG NEW ENERGY EQUIP
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