Control system for assisting gust crossing through fan yaw and control method thereof

A technology for control systems and wind turbines, applied in the control of wind turbines, wind turbines, motors, etc., can solve the problems of increasing the systemic risk of wind turbines, unable to effectively offset wind gusts, etc., to reduce systemic risks, reduce extreme loads and fatigue loads. , the effect of reducing the impact

CN114837888APending Publication Date: 2022-08-02华电新能源集团股份有限公司山西分公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2022-08-02

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Abstract

The invention discloses a control system and method for assisting gust crossing through fan yaw, and the system comprises a controller, a fan, a yaw motor, a wind speed detection sensor, a wind direction detector, a fan generator rotating speed sensor and a fan blade angle detector. The controller enables the fan blades to act in the feathering direction, when gust aggravates and exceeds a gust preset threshold value, the action speed of the fan blades is increased, and when the speed of the fan blades reaches the preset maximum blade speed threshold value, the rotating speed of a fan generator is increased to the set parameter threshold value of the generator, and then the fan blades are driven to act in the feathering direction. The yaw motor is started immediately, meanwhile, the yaw motor is controlled to move in the wind facing angle increasing direction till the rotating speed of the generator is reduced to the rated rotating speed lower than the rotating speed of the generator, the gust yaw motor is shut down immediately, and a normal wind facing program is recovered; according to the invention, the limit load and fatigue load of the fan are reduced.
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Description

technical field

[0001] The invention relates to the technical field of the wind turbine industry, in particular to a control system and a control method for a wind turbine yaw assisting gust crossing. Background technique

[0002] The fan is a machine that relies on the input mechanical energy to increase the gas pressure and discharge the gas. It is a driven fluid machine. Fans are mainly used in mines, underground projects, underground power plants ventilation; boiler ventilation and induced draft; chemical plant high temperature corrosive gas discharge; workshop air conditioning and atomic protection equipment ventilation, etc. It belongs to the category of general machinery.

[0003] Wind gust refers to the sudden high wind speed of the wind farm. When the wind gust occurs, the fan can increase the output instantaneously. When the power reaches the rated power, the fan blade can be adjusted to ensure the stability of the fan output power. Occurs frequently. In extreme ...

Examples

Embodiment 1

[0031] see Figure 1-Figure 2 , an embodiment provided by the present invention: a control system for wind turbine yaw assisting gust crossing, comprising a controller 1, a wind turbine 2 and a yaw motor 3, the wind turbine 2 includes a wind turbine blade and a wind turbine generator, and also includes a wind speed Detection sensor 4, wind direction detector 7, fan generator speed sensor 5 and fan blade angle detector 6, the fan blade angle detector 6 is used to detect the angle information of the fan blade, the fan generator speed sensor 5 Used to detect the rotational speed information of the fan generator, the wind speed detection sensor 4 is used to detect the current wind speed information, and the wind direction detector 7 is used to detect the current wind direction information of the fan 2; the controller 1 obtains When a gust occurs, the controller 1 first moves the fan blades in the feathering direction. When the gust intensifies and exceeds the preset threshold of t...

Embodiment 2

[0043] see image 3 , an embodiment provided by the present invention: a control system for wind turbine yaw-assisted gust crossing, preferably, in order to improve the detection accuracy of wind speed, more than one wind speed detection sensor is also provided on the blades of each fan 2 4. Set up a plurality of wind speed detection sensors 4 distributed at different positions and then obtain the wind speed by obtaining an intermediate value, thereby further improving the detection accuracy.