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Lightning Discharge System for Wind Turbine

A technology for wind turbines, exhaust systems, applied in the field of wind turbines, which can solve problems such as damage, high voltage, and high current

Pending Publication Date: 2021-01-05
SIEMENS GAMESA RENEWABLE ENERGY INNOVATION &TECH SL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Lightning causes high voltages and currents, and some of these components of wind turbines cannot withstand such values ​​and can be damaged

Method used

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  • Lightning Discharge System for Wind Turbine
  • Lightning Discharge System for Wind Turbine
  • Lightning Discharge System for Wind Turbine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0020] A large wind turbine 1000 comprises: a hub 1; a hubcap 2 defining an inner protective space in which the hub 1 is arranged; a plurality of blades 3 attached to the hub 1; and a nacelle 4, such as figure 1 and figure 2 shown in .

[0021] The wind turbine 1000 also comprises a generator (not depicted in the figure) arranged in the nacelle 4 and a generator shaft (not depicted in the figure) attaching the generator to the hub 1 . When the blade 3 and the hub 1 integrally rotate due to the wind, the rotation is transmitted to the generator through the generator shaft, and the generator converts the rotation (mechanical energy) into electrical energy.

[0022] The exhaust system of the present invention is configured for its use in a large wind turbine 1000, and more specifically, for exhausting a lightning strike striking a blade 3 of the wind turbine 1000 to a reference point G (typically the ground). The nacelle 4 is connected to a reference point G by means of a conn...

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PUM

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Abstract

The present invention relates to a lightning discharge system for a wind turbine. The present invention relates to the lightning discharge system for the wind turbine, the wind turbine comprising: a hub (1); a hub cover (2) defining a guard space, the hub (1) being arranged in the guard space; a blade (3) secured to the hub (1); and a nacelle (4). The discharge system includes a blade belt (101) attached to the blade (3), a ring (102) facing the nacelle (4) and attached to the belt (101) and the nacelle (4), a corresponding contact device (103, 104) connecting the belt (101) to the ring (102)and connecting the ring (102) to the nacelle (4). The belt (101) and the ring (102) are arranged in the space, and the ring (102) is also attached to the hub (1) such that it faces the nacelle (4) through the rear opening of the hub cover (2).

Description

technical field [0001] The present invention relates to a lightning discharge system for wind turbines, in particular for large wind turbines. Background technique [0002] Due to their size, wind turbines are susceptible to lightning, generally the blades of the wind turbine. If lightning strikes the tip of a blade of a wind turbine, the current flows through different components of the wind turbine before being discharged to the ground. Lightning causes high voltages and currents, and some of these components of the wind turbine cannot withstand such values ​​and may be damaged. Therefore, lightning discharge systems are commonly used in wind turbines to prevent these damages and discharge these currents and voltages to ground in a controlled and safe manner. [0003] A wind turbine comprises: a hub; a spinner defining an inner protected space in which the hub is arranged in a protected manner; a plurality of blades (usually three) attached to the hub; facing the A nace...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F03D80/30F03D1/06H01R39/64
CPCF03D80/30F03D1/0675F03D1/0691H01R39/64Y02E10/72F05B2240/85F03D80/85F05B2240/30F05B2260/95H02G13/40H02G13/80
Inventor O.加西亚伊尼格斯I.阿兹科纳佩雷斯C.比尼斯阿切尔M.圣马丁萨拉格塔X.乌维托阿兰古伦
Owner SIEMENS GAMESA RENEWABLE ENERGY INNOVATION &TECH SL