Wind-driven power generator yaw control method and module and control device based on control module

A wind turbine and yaw control technology, applied in the control of wind turbines, wind turbines, wind energy power generation and other directions, can solve the problems of unstable current output, frequent starting of the yaw unit, difficult control, etc., to prevent interference, avoid The effect of unstable current output and prolonging the life of the engine room

Active Publication Date: 2015-09-16
STATE GRID CORP OF CHINA +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The present invention aims to solve the problem that the existing control method adopts the zero-difference alignment operation between the nacelle and the risk target, which will cause the yaw unit to start frequently, resulting in unstable current output and difficult control. The yaw control modules all use the zero-difference alignment operation between the nacelle and the risk target, which will cause the yaw unit to start frequently, resulting in unstable current output and difficult control, and the yaw unit in the existing wind turbine yaw control device Real-time control of wind turbines reduces the life of the nacelle by half, thus providing a wind turbine yaw control method, a control module and a control device based on the module

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  • Wind-driven power generator yaw control method and module and control device based on control module
  • Wind-driven power generator yaw control method and module and control device based on control module

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specific Embodiment approach 1

[0047] Specific implementation mode one: refer to figure 2 Specifically explain this embodiment, the method for controlling wind turbine yaw described in this embodiment, the method includes the following steps:

[0048] Data collection step: continuously collect the absolute values ​​of wind speed, wind direction and engine room rotation angle;

[0049] The first judging step: judging whether the wind speed exceeds the upper wind speed limit or the lower wind speed limit, and performing the state maintenance step when the judgment result is yes, and performing the calculation step when the judgment result is no, and the wind speed upper limit and the wind speed lower limit are preset values;

[0050] Calculation step: calculate the deviation angle of wind direction and nacelle, and carry out second judging step after this step ends;

[0051] The second judging step: judging whether the deviation angle is less than or equal to 16°, and performing the state maintaining step w...

specific Embodiment approach 2

[0062] Specific embodiment two: the yaw control module of the wind power generator described in this embodiment, the control module includes the following units:

[0063] Data acquisition unit: continuously collect the absolute value of wind speed, wind direction and cabin rotation angle;

[0064] The first judging unit: judging whether the wind speed exceeds the upper wind speed limit or the lower wind speed limit, and starting the state holding unit when the judgment result is yes, and starting the calculation unit when the judgment result is no, the upper wind speed limit and the lower wind speed limit are preset values;

[0065] Calculation unit: calculate the deviation angle of wind direction and nacelle, and start the second judging unit after this unit ends;

[0066] The second judging unit: judging whether the deviation angle is less than or equal to 16°, and starting the state maintaining unit when the judging result is yes, and starting the third judging unit when th...

specific Embodiment approach 3

[0074] Specific implementation mode three: refer to figure 1 This embodiment is described in detail. This embodiment is based on the control device of the wind turbine yaw control module described in the second embodiment, which includes a speed measurement unit 1, a direction measurement unit 2, a main controller 3, a stop rotation unit 4 and The yaw unit 5; the direction finding unit 2 includes a wind vane and a filter;

[0075] The output end of the speed measurement unit 1 is connected to the speed measurement signal input end of the main controller 3, the output end of the direction measurement unit 2 is connected to the direction measurement signal input end of the main controller 3, and the oil circuit signal output end of the stop rotation unit 4 is connected to the main controller 3, the oil circuit signal input end of the main controller 3, the stop rotation control signal output end of the main controller 3 is connected to the control signal input end of the stop ro...

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Abstract

The invention discloses a wind-driven power generator yaw control method and module and a control device based on the control module, relates to the wind-driven power generator yaw control technology, and aims to solve the problem that the instantaneous wind direction interferes yaw control to allow a yaw unit to be started frequently, and unstable current output, difficulty in control and cabin service life lowering are caused. If wind speed exceeds a set value range or the deviation angle of the wind direction and a cabin is not larger than 16 degrees, the yaw unit keeps the state; if the deviation angle ranges between 16 degrees and 180 degrees, a yaw motor rotates reversely, or else the yaw motor rotates forwardly, and wind-driven power generator yaw control is achieved. The wind-driven power generator yaw control module is embedded into the control device based on the module. The yaw unit has a delay starting function and adopts error control, interference caused by the instantaneous wind speed is prevented, wind energy utilization rate is guaranteed, the situations of frequent starting and control difficulty caused by zero alignment are avoided, and cabin service life can be prolonged. The control method and module and the control device are applicable to wind-driven power generator yaw control.

Description

technical field [0001] The invention relates to a wind power generator yaw control technology. Background technique [0002] The utilization rate of wind energy and mechanical life are an important indicator of wind turbines. The control technology of wind turbines has been widely studied by people. A variety of effective control strategies and algorithms for wind turbines have been proposed, but most of them are related to wind turbine control and generator control. The technology of control and grid-connected control, but the technology of yaw control has not been effectively developed. Therefore, the dynamic modeling of wind turbines in the range of changes in the overall wind characteristics and the process of tracking the wind direction to follow the wind is carried out. , which is of great significance to improve the utilization rate of wind energy. [0003] Wind direction is random and always changing. In order to make the wind rotor work normally, the blades of the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F03D7/00
CPCY02E10/72
Inventor 于海洋徐冰亮董尔佳吕飞孔祖光鑫武国良姜鹏崔佳鹏
Owner STATE GRID CORP OF CHINA
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