Blade tip tower clearance monitoring method

A technology of towers and spires, which is applied in the field of clearance monitoring of spires and spires, can solve the problems of inability to obtain real clearance values, inability to alarm when the clearance of spires and spires is too small, and achieve the effect of real-time tracking and monitoring of clearances.

Active Publication Date: 2020-11-10
SHANGHAI ELECTRIC WIND POWER GRP CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The existing blade tip tower headroom monitoring system has at least the following problems. It will be affected by the harsh environment, cannot obtain the real headroom value, and cannot give an alarm to the situation that the blade tip tower headroom is too small

Method used

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  • Blade tip tower clearance monitoring method
  • Blade tip tower clearance monitoring method
  • Blade tip tower clearance monitoring method

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Embodiment Construction

[0021] The following is attached Figure 1~3 and Specific Embodiments A blade tip tower clearance monitoring system and monitoring method proposed in the present invention will be further described in detail. The advantages and features of the present invention will become clearer from the following description. It should be noted that the drawings are in a very simplified form and all use imprecise scales, which are only used to facilitate and clearly assist the purpose of illustrating the embodiments of the present invention. In order to make the objects, features and advantages of the present invention more comprehensible, please refer to the accompanying drawings. It should be noted that the structures, proportions, sizes, etc. shown in the drawings attached to this specification are only used to match the content disclosed in the specification, for those who are familiar with this technology to understand and read, and are not used to limit the implementation of the pres...

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Abstract

The invention discloses a blade tip tower clearance monitoring method. The method comprises the following steps that 1, an image which comprises a blade tip of a fan blade and a tower is captured in advance, and an actual clearance value L between the blade tip and the tower is obtained; 2, the mapping relationship L=F(D) between the actual clearance value L between the blade tip and the tower andthe pixel distance D between the tower and the blade tip in the image is established; 3, the image containing the blade tip and the tower is obtained in real time, and a current pixel distance between the blade tip and the tower in the image is calculated and acquired in real time; and 4, a current actual clearance value is obtained in combination with the current pixel distance between the bladetip and the tower drum and the mapping relationship L=F(D). According to the blade tip tower clearance monitoring method, real-time tracking and monitoring of the clearance of the blade tip and the tower of a wind driven generator are realized.

Description

technical field [0001] The invention relates to the technical field of wind power, in particular to a method for monitoring the clearance of a blade tip tower. Background technique [0002] The clearance of the blade tip and the tower refers to the minimum distance between the tip of the blade and the tower when the blade passes the tower when the fan generator is rotating. The blades will be deformed in the waving direction, shimmy direction and torsional direction under different wind conditions. In order to prevent the deformed blades from touching the tower, the clearance of the blade tip tower under various working conditions will be simulated at the early stage of fan design. distance to ensure the normal operation of the fan and avoid blade sweeping accidents. As the length of the blades increases, the requirements for the minimum headroom of the wind turbine become more and more stringent. [0003] The existing blade tip tower headroom monitoring system has at leas...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F03D17/00
CPCF03D17/00
Inventor 王蓓姜磊许王建吴姗姗
Owner SHANGHAI ELECTRIC WIND POWER GRP CO LTD
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