Method and device for identifying pitch angle deviation of blade and method and device for controlling wind generating set

A technology of wind turbines and pitch angle, which is applied in the control of wind turbines, monitoring of wind turbines, wind turbines, etc., and can solve problems such as the inability to automatically and conveniently identify blades and deviations

Active Publication Date: 2021-03-26
BEIJING GOLDWIND SCI & CREATION WINDPOWER EQUIP CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] An exemplary embodiment of the present invention is to provide a method and device for identifying the blade pitch angle deviation and controlling the wind power generating set, so as to solve t

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  • Method and device for identifying pitch angle deviation of blade and method and device for controlling wind generating set
  • Method and device for identifying pitch angle deviation of blade and method and device for controlling wind generating set
  • Method and device for identifying pitch angle deviation of blade and method and device for controlling wind generating set

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Embodiment Construction

[0050] Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like numerals refer to like parts throughout. The embodiments are described below in order to explain the present invention by referring to the figures.

[0051] figure 1 A flowchart showing a method for identifying a blade pitch angle deviation of a wind power generating set according to an exemplary embodiment of the present invention.

[0052] refer to figure 1 , in step S10, acquire the operation data of the wind power generating set.

[0053] As an example, the operation data of the wind power generating set may be acquired when the wind power generating set is generating electricity normally under a specific condition and there is no power cut.

[0054] Further, as an example, the operation data of the wind power generating set within a second preset time period may be obtained after the wind power generating set ...

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Abstract

The invention provides a method and device for identifying a pitch angle deviation of a blade and a method and device for controlling a wind generating set. The method for identifying the pitch angledeviation of the blade comprises the following steps of: acquiring operation data of a wind generating set; based on the obtained operation data, determining an energy amplitude of a vibration signalof the wind generating set under the one-time rotation frequency of an impeller and the energy amplitude of the vibration signal of the wind generating set under the three-time rotation frequency of the impeller; and based on the determined energy amplitudes under the one-time rotation frequency and the three-time rotation frequency of the impeller, determining an absolute deviation angle of a current pitch angle of the blade by using a pre-established specific mathematical model, wherein the absolute deviation angle of the current pitch angle of the blade is the deviation between the currentpitch angle of the blade and the optimal pitch angle.

Description

technical field [0001] The present invention generally relates to the technical field of wind power generation, and more specifically relates to a method and device for identifying blade pitch angle deviation and controlling a wind power generating set. Background technique [0002] Usually in the design simulation stage of wind turbines, the control parameters of wind turbines are designed according to the mathematical model of the whole machine (involving blades, towers, pitch, and flow conversion systems, etc.), including the most important parameters of wind turbines. Optimal pitch angle parameters. When the wind turbine is running, if the output power of the wind turbine is less than the rated power, the pitch angle of the blades is fixed at the optimal pitch angle so that the blades can obtain the maximum energy from the wind. [0003] However, during on-site installation, due to installation errors or errors, there may be a deviation between the actual pitch angle of...

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Application Information

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IPC IPC(8): F03D17/00F03D7/00
CPCF03D17/00F03D7/00F05B2270/328Y02E10/72
Inventor 欧发顺薛达吴先友
Owner BEIJING GOLDWIND SCI & CREATION WINDPOWER EQUIP CO LTD
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