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Wind turbine and method of detecting asymmetric icing on a wind turbine

A rotor speed and acceleration technology, applied in the field of ice accumulation, can solve the problems that the wind turbine cannot run, increase the cost of the wind turbine, etc.

Active Publication Date: 2008-06-25
GENERAL ELECTRIC CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The requirement for additional hardware increases the cost of wind turbine installation and operation
Also, for geographic regions with mean annual temperatures above freezing, the additional costs associated with detecting asymmetric icing may make wind turbine operation impossible

Method used

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  • Wind turbine and method of detecting asymmetric icing on a wind turbine
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  • Wind turbine and method of detecting asymmetric icing on a wind turbine

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Embodiment Construction

[0051] As those of ordinary skill in the art can understand, the present invention can be embodied by a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment (including firmware, resident software, microcode, etc.), or a combination of software and hardware aspects (all hardware is generally referred to in this document as "circuitry ", "module" or "system" refers to) the embodiment form. Furthermore, the present invention may also take the form of a computer program product stored on a computer-usable storage medium having computer-usable program code embodied on the medium.

[0052] Any suitable computer readable medium may be utilized. The computer-usable or computer-readable medium may be, for example but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, device, apparatus, or propagation medium. More specific ...

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Abstract

A method (200) for detecting asymmetric utilizing longitudinal tower acceleration data may include: providing a rotorspeed acceleration monitoring system; determining from the rotorspeed acceleration monitoring system whether a rotorspeed acceleration is above a rotorspeed acceleration limit (215); determining whether a rotor-mass imbalance condition exists (235,245); and determining whether a longitudinal tower acceleration coincides with icing on a rotor.

Description

technical field [0001] The present invention relates to icing that occurs on wind turbine rotor blades; and more particularly to methods and systems for detecting asymmetric icing. Background technique [0002] Wind turbines are usually installed in areas where climatic conditions allow for the accumulation of ice (hereinafter referred to as icing). Icing on wind turbine rotor blades (hereafter referred to as blades) typically causes problems including reduced power output and higher stress on some components. Icing can be divided into two categories, symmetrical (icing on all blades) and asymmetrical (icing on some blades). Asymmetric icing increases the vibration of the wind turbine tower, and the acceleration of the rotor rotational speed. Asymmetric icing may also create rotor mass imbalances leading to higher fatigue loads and thus requiring the use of stronger and more expensive wind turbine components. [0003] Existing systems for detecting asymmetric icing typica...

Claims

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Application Information

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IPC IPC(8): G01M15/00G01M1/16G01P3/44F03D11/00
CPCF05B2260/80Y02E10/722F05B2270/334F05B2270/807F05B2270/309F05B2270/327F03D11/0025F03D80/40Y02E10/72
Inventor B·孙德曼C·西厄次H·奥英
Owner GENERAL ELECTRIC CO
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