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Laser correction method, device, equipment and medium for wind turbine blade angle

A wind turbine, blade angle technology, applied in mechanical equipment, the use of optical devices, wind turbine monitoring and other directions, can solve problems such as difficulty in achieving high precision, and achieve the effect of simple and easy implementation, high precision, and simple and fast measurement

Active Publication Date: 2022-05-17
HUANENG CLEAN ENERGY RES INST
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] In view of the above-mentioned deficiencies in the prior art, the purpose of the present invention is to provide a laser correction method for the blade angle of a wind turbine to solve the technical problem that the existing detection method is easily affected by other components other than the blade and difficult to achieve higher accuracy

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  • Laser correction method, device, equipment and medium for wind turbine blade angle
  • Laser correction method, device, equipment and medium for wind turbine blade angle
  • Laser correction method, device, equipment and medium for wind turbine blade angle

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Embodiment approach

[0044] In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as there is no conflict with each other.

[0045] In the prior art, there are mainly two methods for detecting whether the three blades of the fan impeller are balanced:

[0046] One is: the data analysis method, by analyzing and comparing the real-time data changes of the pitch drive motor output of the three blades, the force difference of the three blades is obtained. Theoretically speaking, the three blades at the same windward angle, under the same external environmental conditions, will receive basically the same force when they rotate to the same position. During the rotation of the impeller, the output of the three pitch drive motors will also change. should be the same. For example, the force on blade 1 at the six o'clock position should be basically the same as that on blades 2 and 3 when they are also at t...

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Abstract

The invention provides a laser correction method for the blade angle of a wind turbine, comprising the following steps: using a laser distance measuring device to measure the contours of the tower and three blades of the wind turbine for a certain period; obtaining the swing accuracy of the tower Compensation processing method: obtain the data of the surface contours of the blades of the three wind turbines; compare the data of the surface contours of the three blades to obtain the angle errors of the three blades; according to the angle errors of the three blades, the three support the blades for precise calibration. The laser correction method in the present invention can eliminate the measurement data error caused by tower swing, obtain the difference in the angles of the three blades, accurately calibrate the position of the best pitch angle of the blades, and improve the power generation efficiency of the unit.

Description

technical field [0001] The invention relates to the technical field of wind power control, in particular to a laser correction method for blade angles of wind turbines. Background technique [0002] The wind turbine converts wind energy into mechanical energy through the wind wheel, and transmits it to the generator through the transmission chain, and then converts the mechanical energy into electrical energy through the generator and transmits it to the grid. [0003] Wind rotors and blades are the key components of wind turbines. If the aerodynamic imbalance of the wind turbines, the wind turbines will generate additional load or load imbalance. The reasons for the aerodynamic imbalance of the wind turbine blades mainly include errors during installation of the blades and the long-term stability of the wind turbines. Deformation of the blade after operation. Therefore, effectively detecting the aerodynamic imbalance of the blades during the operation of the wind turbine a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F03D17/00G01B11/24G01H17/00
CPCF03D17/00G01B11/24G01H17/00Y02E10/72
Inventor 李力森蔡安民林伟荣李媛许扬焦冲
Owner HUANENG CLEAN ENERGY RES INST