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Method of operating a wind turbine

A wind turbine and turbine technology, which is applied in the control of wind turbines, wind turbines, wind turbine combinations, etc., can solve problems such as economic losses, and achieve the effects of reducing economic losses, high speed and power

Inactive Publication Date: 2007-01-24
GAMESA INNOVATION & TECH SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Stopping a turbine under these conditions would result in unnecessary financial loss

Method used

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  • Method of operating a wind turbine
  • Method of operating a wind turbine
  • Method of operating a wind turbine

Examples

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Embodiment Construction

[0103] A major part of the wind turbine loads is generated by the relative wind speed effects on the blades. The load on the blade is generally determined by the lift L and pull D forces shown for figure 1 Any blade section in 1, and is defined by the following formula:

[0104] L=ρW R 2 C L A

[0105] D=ρW R 2 C D A

[0106] in:

[0107] ρ is the air density

[0108] W R is the wind speed relative to the blade part

[0109] A is the area of ​​the leaf part

[0110] C L is the dimensionless lift coefficient (depending on the inflow angle α)

[0111] C D is the dimensionless pull coefficient (depending on the inflow angle α)

[0112] The lift L and pull D act along a virtual lift centerline extending along the leading edge of the blade and 25% of the blade width behind the leading edge. exist figure 1 , the imaginary line extends perpendicular to the paper plane and passes through the center of lift C L .

[0113] For the profile of the blade section 1...

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Abstract

In a wind turbine and in a method of operating a wind turbine, the rotor speed and / or the power of the generator is reduced in response to a variable exceeding a predetermined value. Said variables belong to the group of variables consisting of wind direction and wind turbulence sensed by external sensors relative to the horizontal direction of the turbine main shaft and by one or Any other variable sensed by multiple sensors.

Description

technical field [0001] The present invention relates to a method for operating a wind turbine in a safe mode, that is to say operation of the wind turbine in such a way that its safety is ensured while maximizing power output and availability. The invention also relates to the use of this method, and to a wind turbine designed to utilize this method. Background technique [0002] Various unfavorable external conditions, mostly stormy weather conditions, will cause excessive loads on wind turbines. On the one hand, operating a wind turbine under these conditions should be avoided in order to avoid damaging stresses on the turbine; but on the other hand, shutting down a wind turbine under these conditions would render the wind turbine unusable, thereby substantially reducing energy production, resulting in economic losses. [0003] Certain unfavorable "internal" conditions can also lead to excessive loads on wind turbines. Such a condition would be a yaw error, that is, the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F03D7/00F03D7/04F03D9/00G01P5/07G01P13/02H02P9/04
CPCF03D7/028F03D7/0276Y02E10/723Y02E10/725F03D7/042F05B2270/807F05B2270/20F05B2270/331F05B2270/107F05B2270/3201F05B2270/321F05B2270/808F05B2270/335F05B2270/303F05B2270/334F05B2240/95F03D7/0264F05B2270/322F05B2270/109Y02E10/727Y02E10/72F03D7/0204F03D7/022F03D7/04
Inventor 何塞·伊格纳西奥·劳伦特·冈萨雷斯
Owner GAMESA INNOVATION & TECH SA
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