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Method and device for correcting pneumatic unbalance of impeller

An aerodynamic balance and impeller technology, which is applied in the trial operation of wind turbines and wind power generation, etc., can solve the problems of inability to automatically and conveniently correct the aerodynamic imbalance of the impeller, correct the aerodynamic imbalance of the impeller, etc., and achieve the effect of avoiding vibration exceeding the limit and alarming and shutting down.

Pending Publication Date: 2021-06-22
XINJIANG GOLDWIND SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] An exemplary embodiment of the present invention is to provide a method and device for correcting the aerodynamic imbalance of the impeller to solve the problem in the prior art that the aerodynamic imbalance of the impeller cannot be automatically and conveniently corrected

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  • Method and device for correcting pneumatic unbalance of impeller
  • Method and device for correcting pneumatic unbalance of impeller
  • Method and device for correcting pneumatic unbalance of impeller

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Embodiment Construction

[0031] 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.

[0032] figure 1 A flowchart showing a method of correcting an aerodynamic imbalance of an impeller according to an exemplary embodiment of the present invention.

[0033] refer to figure 1 , in step S10, it is determined whether the impeller of the wind power generating set is in an aerodynamic unbalanced state.

[0034] As an example, step S10 may be performed periodically.

[0035] As an example, when the aerodynamic unbalance degree of the impeller of the wind generating set is greater than or equal to a preset impeller aerodynamic unbalance constant, it can be determined that the impeller is in an aerodynamic unbalance state, wherein the aerodynamic unbalance of t...

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PUM

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Abstract

The invention provides a method and device for correcting pneumatic unbalance of an impeller. The method comprises the steps that whether an impeller of a wind generating set is in a pneumatic unbalance state or not is determined; when it is determined that the impeller is in the pneumatic unbalance state, the pitch angle optimizing range is determined; and target pitch angles of a plurality of blades of the impeller are circularly and sequentially set as values within the determined pitch angle optimizing range, and circulation is stopped until the impeller is in a pneumatic balance state due to the set target pitch angles of the multiple blades, wherein a plurality of target pitch angles set for the plurality of blades in each cycle are at least partially different from those set in the previous cycle. According to the method and the device, the pneumatic unbalance of the impeller can be accurately, quickly and automatically corrected.

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 correcting the aerodynamic imbalance of an impeller. 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 optimal parameters of wind turbines. The pitch angle parameter. 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 will be 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 the blades (one or more blades) and the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F03D13/35
CPCF03D13/35Y02E10/72
Inventor 欧发顺薛达
Owner XINJIANG GOLDWIND SCI & TECH
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