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Pitch angle control method and pitch angle controller of wind generating set

A technology of a wind power generating set and a control method, which is applied to the control of wind power engines, wind power power generation, wind power generation, etc., and can solve problems such as performance degradation, unsatisfactory pitch angle control effects, and large power fluctuations at high wind speeds.

Active Publication Date: 2014-04-30
ZHEJIANG WINDEY
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Problems solved by technology

Therefore, the control effect of the PI controller on the pitch angle is not ideal, and there are disadvantages such as large power fluctuations at high wind speeds, and changes in system parameters will lead to performance degradation

Method used

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  • Pitch angle control method and pitch angle controller of wind generating set
  • Pitch angle control method and pitch angle controller of wind generating set
  • Pitch angle control method and pitch angle controller of wind generating set

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Embodiment Construction

[0048] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0049] figure 1 It is a flow chart of a pitch angle control method for a wind power generating set provided in this application.

[0050] refer to figure 1 As shown, the pitch angle control method of the wind power generating set provided in the embodiment of the present application includes:

[0051] Step S100: Perform aerodynamic analysis on the dynamic characteristics of the wind power generating set, and establish an actual dynamic model, which includes ...

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Abstract

The invention discloses a pitch angle control method and a pitch angle controller of a wind generating set. Aerodynamics analysis is carried out on dynamic properties of the wind generating set, a practical dynamical model is set up; according to the practical dynamical model, a reference model with ideal dynamic properties is generated, input of the reference model is the pitch angle and output of the reference model is the rotation speed of a generator; according to the reference model, state predicting is carried on the wind generating set, the pitch angle control law of the wind generating set is determined and the pitch angle control law is used for adjusting the pitch angle of the wind generating unit. Thus, when the practical generator revolution speed output by the wind generating set exceeds the rated generating set revolution speed, the practical generator revolution speed output by the wind generating set is adjusted to be the rated generator revolution speed. Therefore, when the wind speed changes, the generator revolution speed can be well maintained around the rated revolution speed, errors of mean square are small, parameters can be conveniently adjusted, the fluctuation of the revolution speed of the generator is little and control precision and reliability are high.

Description

technical field [0001] The present application relates to the technical field of wind power generator control, and in particular to a pitch angle control method and a pitch angle controller of a wind power generator. Background technique [0002] Wind energy is a clean and safe renewable resource. Wind power generation can ensure energy security, adjust energy structure, and reduce environmental pollution. It is one of the most mature, large-scale and promising power generation methods in the field of new energy. Sustained development is of great significance. The wind turbines that use wind energy to generate electricity are nonlinear time-varying large inertia systems. At the same time, they bring strong disturbances in wind speed, and there are engineering status quo that the measured values ​​are inaccurate and unusable, and there are uncertain factors brought about by grid connection and outdoor operation. It is another difficult problem of wind power generation contro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F03D7/00
CPCY02E10/723Y02E10/72
Inventor 杨帆罗清顺王青孙勇
Owner ZHEJIANG WINDEY
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