Blade tip distance control method based on clearance monitoring
A control method and blade technology, which is applied in the monitoring of wind turbines, wind power generation, wind turbines, etc., can solve problems such as difficulty in guaranteeing reliability, difficulty in installation, and slow progress in measurement
Pending Publication Date: 2021-12-10
CSIC CHONGQING HAIZHUANG WINDPOWER EQUIP
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Problems solved by technology
The existing monitoring method for the distance between the blade tip and the tower wall of the wind turbine in the industry realizes real-time distance measurement, but at the same time, it is accompanied by a large amount of calculation, inaccurate measurement, slow measurement progress, difficult installation and difficult to guarantee reliability, etc. shortcoming
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[0024] Embodiments of the technical solutions of the present invention will be described in detail below in conjunction with the accompanying drawings. The following examples are only used to illustrate the technical solutions of the present invention more clearly, and therefore are only examples, rather than limiting the protection scope of the present invention.
[0025] see Figure 1~3 As shown, the present invention provides a control method of blade tip pitch based on headroom monitoring, comprising the steps of:
[0026] Obtain the horizontal distance from the blade tip to the outer wall of the tower in real time;
[0027] Specifically, range finders are respectively arranged on both sides of the tower, the two range finders are located on the same horizontal plane, and the two range finders are arranged on the same line as the axis of the tower. Further, the straight-line distance d, the angle α in the horizontal direction and the angle β in the vertical direction fro...
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The invention provides a blade tip distance control method based on clearance monitoring. The method comprises the following steps that the horizontal distance from a blade tip to the outer wall of a tower drum is acquired in real time; the natural clearance and the limit clearance of a blade of a unit are measured, and the threshold value of the blade tip distance is set according to the natural clearance and the limit clearance; and the horizontal distance, acquired in real time, from the blade tip to the outer wall of the tower drum is compared with the threshold value, and the blade is controlled according to the magnitude relationship between the blade tip distance and the threshold value. The clearance distance from the blade tip to the tower drum wall is monitored in real time; and according to the monitored data of a distance measuring instrument, the distance from the blade tip to the tower drum wall is divided into a normal level, a warning level and a limit level, corresponding control programs are set for different distance levels, and the aims of monitoring the clearance of a wind generating set in real time and controlling the blade tip distance are achieved.
Description
technical field [0001] The invention relates to the technical field of wind power generation, in particular to a control method of blade tip pitch based on headroom monitoring. Background technique [0002] The shortest distance between the blade tip of the wind turbine and the tower wall directly reflects the stiffness range of the blade structure design. In order to reduce the weight of the integrated design of the blade and the whole machine, the distance between the blade tip and the tower wall can be monitored and controlled in real time Realize the purpose of weight reduction and cost reduction of the whole machine. The existing monitoring method for the distance between the blade tip and the tower wall of the wind turbine in the industry realizes real-time distance measurement, but at the same time, it is accompanied by a large amount of calculation, inaccurate measurement, slow measurement progress, difficult installation and difficult to guarantee reliability, etc. ...
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IPC IPC(8): F03D17/00F03D80/00
CPCF03D17/00F03D80/00Y02E10/72
Inventor 高阳肖航
Owner CSIC CHONGQING HAIZHUANG WINDPOWER EQUIP