Rotating speed control method and device of wind turbine generator system

A wind turbine and rotational speed control technology, which is applied in the control of wind turbines, monitoring of wind turbines, wind turbines, etc., can solve the problems of inaccurate resonance bands, difficulties in resonance bands, and threats to the safety and reliability of wind turbines.

Active Publication Date: 2020-10-30
BEIJING GOLDWIND SCI & CREATION WINDPOWER EQUIP
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AI Technical Summary

Problems solved by technology

However, due to different configurations of wind turbines, wind turbines with the same configuration in different wind farms, wind turbines at different locations in the same wind farm, etc., there are large differences in tower frequencies, which brings about artificial pre-defined resonance bands. It is very dif

Method used

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  • Rotating speed control method and device of wind turbine generator system
  • Rotating speed control method and device of wind turbine generator system
  • Rotating speed control method and device of wind turbine generator system

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Embodiment Construction

[0019] The present invention may have various modifications and various embodiments, and it should be understood that the present invention is not limited to these embodiments, but includes all modifications, equivalents and replacements within the spirit and scope of the present invention. The terms used in the example embodiments of the present invention are for describing specific embodiments only, and are not intended to limit the example embodiments. As used herein, the singular forms are intended to include the plural forms as well, unless the context clearly dictates otherwise.

[0020] figure 1 is the speed-torque control graph showing the speed avoidance strategy of the wind turbine generator set.

[0021] refer to figure 1 , the horizontal axis is the speed w of the wind turbine, and the vertical axis is the torque T of the wind turbine, where w min is the minimum speed, w max is the rated speed, w 1 To avoid the low speed of the speed, w 2 To avoid the high sp...

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Abstract

The invention provides a rotating speed control method and device of a wind turbine generator system. The rotating speed control method comprises the steps that whether the current impeller rotating speed of the wind turbine generator system is in a rotating speed interval corresponding to a resonance band or not is determined; when the current impeller rotating speed is in the rotating speed interval, resonance recognition is executed to determine whether a resonance risk exists or not; and when it is determined that the resonance risk exists, execution is carried out to enable the current impeller rotation speed to jump to rotation speed avoiding control of the preset impeller rotation speed so as to avoid the resonance risk. According to the rotating speed control method and device of the wind turbine generator system, the reliability and the generating capacity of the wind turbine generator system can be improved.

Description

technical field [0001] The following description relates to the field of wind power, and more specifically, relates to a method and device for controlling the speed of a wind power generating set. Background technique [0002] As the competition in the wind power market intensifies and the focus of wind power development gradually shifts to areas with low wind speeds, in order to increase the utilization time of wind turbines and increase the power generation of units in low wind speed areas, the height of towers is continuously increased during the development of wind power generation units, reducing The weight of the tower reduces the natural frequency of the tower. When the first-order natural frequency of the tower intersects with the frequency (for example, 1P frequency) of a certain speed of the impeller during the operation of the wind turbine, there will be a resonance point during the operation of the wind turbine. or resonance bands. [0003] In addition, the dema...

Claims

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Application Information

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IPC IPC(8): F03D7/00F03D17/00
CPCF03D7/00F03D17/00F05B2270/101F05B2260/96F05B2270/334Y02E10/72
Inventor 杨晓李永明
Owner BEIJING GOLDWIND SCI & CREATION WINDPOWER EQUIP
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