Blade clearance monitoring method for wind generating set

A technology for wind turbines and blades, which is applied in the monitoring of wind turbines, wind turbines, and engines, can solve the problems of inconvenient installation and maintenance, high price, and large amount of data, so as to reduce the difficulty of installation and maintenance and save costs. , the effect of reducing the burden

Active Publication Date: 2019-05-28
GUANGDONG MINGYANG WIND POWER IND GRP CO LTD
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Problems solved by technology

[0004] There are several deficiencies in this technology. First, several laser scanners need to be arranged, and the laser scanners are equipped with angle and distance measurement functions, which are expensive; second, the installation height of the laser scanner is the height of the lower blade tip, and the distance from the ground is at least 20 meters, installation and maintenance are

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  • Blade clearance monitoring method for wind generating set

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Embodiment Construction

[0013] The present invention will be further described below in conjunction with specific examples.

[0014] Such as figure 1 As shown, the nacelle 3 of the wind generator set is installed on the top of the tower 6, the control system 2 of the wind generator set is installed in the nacelle 3, and the wind wheel composed of three blades 4 rotates clockwise after absorbing wind energy.

[0015] The specific conditions of the blade clearance monitoring method of the wind power generating set provided in this embodiment are as follows:

[0016] First, determine the safe clearance distance L1 between the blade 4 and the outer wall of the tower 6 according to theoretical calculations, then set a point A at the distance L1 from the ground to the outer wall of the tower 6, and then install a laser rangefinder 1 with a visible light reference on the side of the nacelle 3 , the laser 5 emitted by the laser rangefinder 1 is vertically downward, and when the visible light hits the fixed ...

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Abstract

The invention discloses a blade clearance monitoring method for a wind generating set. The method comprises the steps of firstly, determining a safe clearance value; then, fixing a point at the position which is away from the ground by the safe clearance value; subsequently, mounting a laser distance measurement device with visible light reference on the side face of a cabin, wherein laser faces downwards vertically; when visible light is seen to be cast to the fixed point on the ground, fixing the laser distance measurement device; subsequently, connecting the laser distance measurement device into a control system; in the operation process, if a blade is not bent severely, considering the distance measured by the laser distance measurement device as the distance from the laser distance measurement device to the ground; and if the blade is bent severely due to the wind effect and the measured distance exceeds the safe clearance distance, casting the laser to the blade, and consideringthe distance measured by the laser distance measurement device as the distance from the laser distance measurement device to a lower blade tip of the blade, wherein a control system makes judgment and gives an alarm for halt, the blade stops rotating so that it can be guaranteed that the set operates safely. The method has the advantages of being safe, reliable, precise in measurement, low in cost and the like.

Description

technical field [0001] The present invention relates to the technical field of wind power generators, in particular to a blade clearance monitoring method of wind power generators. Background technique [0002] With the development of technology, the blades of wind turbines are getting longer and longer, which means that the blades are getting softer and more deformed during rotation, which may hit the tower and cause danger. Therefore, it is necessary to monitor the relationship between the blades and the blades in real time. The distance between the towers, that is, the clearance distance. [0003] At present, the method used in the industry to measure the clearance between the blade and the tower is to arrange several laser scanners along the radial direction at 360 degrees on the tower near the lower blade tip of the blade. Calculate the minimum distance between the lower blade tip and the tower. [0004] There are several deficiencies in this technology. First, severa...

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Application Information

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IPC IPC(8): F03D17/00G01S17/08
Inventor 魏煜锋石宇峰文智胜蒋祥增邓顺城吴幸维
Owner GUANGDONG MINGYANG WIND POWER IND GRP CO LTD
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