Calibration method and device for optical fiber load sensor of wind generating set

A technology of wind turbines and load sensors, which is applied in the monitoring of wind turbines, wind turbines, mechanical equipment, etc., can solve problems such as time-consuming and labor-consuming, and achieve the effects of avoiding calibration errors, high accuracy, and saving manpower and material resources

Active Publication Date: 2020-02-07
BEIJING GOLDWIND SCI & CREATION WINDPOWER EQUIP CO LTD
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  • Abstract
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Problems solved by technology

[0003] The purpose of the present invention is to provide a calibration method and equipment for an optical fiber load sensor of a wind power generating set, so as to solve the time-consuming and labor-consuming problems of the existing calibration methods

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  • Calibration method and device for optical fiber load sensor of wind generating set
  • Calibration method and device for optical fiber load sensor of wind generating set
  • Calibration method and device for optical fiber load sensor of wind generating set

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Embodiment Construction

[0036] Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0037] The following will refer to figure 1 Describe some terms involved in the present invention.

[0038] The load refers to the external force and other factors that cause the internal force and deformation of the structure or component. In the present invention, it refers specifically to the bending moment of the blade root of the wind turbine, including the bending moment in the two directions of the blade flapping direction and the blade shimmy direction.

[0039] The blade flapping direction refers to the direction perpendicular to the chord line; the blade shimmy direction refers to the direction parallel to the chord line.

[0040] The pitch angle refers to the angle between the chord line of the blade and the rotation plane. The pitch angle of the wind turbine is generally around 0° when the wind turbine is in normal operation, and the pitch a...

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Abstract

The invention provides a calibration method and device for an optical fiber load sensor of a wind generating set. The calibration method includes the steps that data for calibration is collected in real time, wherein the data for calibration includes a pitch angle of a blade of the wind generating set, the acceleration measured by an acceleration sensor installed in an impeller of the wind generating set and the wavelength of the optical fiber load sensor installed at the root of the blade; when the wind generating set meets calibration conditions, the currently collected data for calibrationis saved; and when the data volume of the saved data for calibration meets calibration requirements, parameters to be calibrated of the optical fiber load sensor are calibrated according to the saveddata for calibration. According to the calibration method and device, the data for calibration is collected in real time, once the conditions are met, calibration can be performed based on the collected qualified data, the calibration relationship can be updated in time, the accuracy is high, and a large amount of manpower and material resources can be saved.

Description

technical field [0001] The invention relates to the technical field of wind power generation, and more specifically, to a calibration method and equipment for an optical fiber load sensor of a wind power generating set. Background technique [0002] According to the requirements of the relevant standards, the blade root load of the wind turbine is one of the load variables that must be tested. Accurate measurement of load data is the premise to ensure load reduction and life extension of wind turbines. In some special control strategies, such as independent pitch control, accurate measurement of load is even more critical. For the fiber optic load sensor, the original signal measured is a wavelength signal. To obtain the load variable of the blade, it is necessary to calibrate the relevant parameters of the fiber optic load sensor. Due to some environmental factors or human factors (such as long-term humid environment or people accidentally stepping on it, etc.), the calibr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F03D17/00
CPCF03D17/00
Inventor 管海芳袁旭
Owner BEIJING GOLDWIND SCI & CREATION WINDPOWER EQUIP CO LTD
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