A method for measuring the windward elevation angle of a horizontal axis wind turbine
A technology of wind power generators and measurement methods, which is applied in the direction of wind power generators, wind power motor monitoring, motors, etc., and can solve problems such as deformation, windward elevation angles and actual angles that do not match
Active Publication Date: 2019-02-15
云南电力试验研究院(集团)有限公司
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Problems solved by technology
However, this method has the following problems: under a certain wind speed, the tower 1, the nacelle 2, and the blade 3 are all loaded and deformed
Under the condition of small angle measurement, this offset will cause the measured windward elevation angle to be inconsistent with the actual angle
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[0011] The invention provides a method for measuring the windward elevation angle of a horizontal axis wind power generating set, which solves the drift of the fixed point for measuring the windward elevation angle on the nacelle by using a fixed point on the ground, and obtains a more accurate value of the windward elevation angle.
[0012] Figure 4 In the schematic diagram of the test process of the windward elevation angle of the horizontal axis wind turbine provided by the present invention, EF is the axis of the tower, FJ is the axis of the nacelle, and point J is the outermost point of the hub. Point E is the center point of the tower, and its position can be determined according to the inner circle of the tower. Affected by the incoming wind, the entire tower 1 will tilt to form a GE arc, and at the same time, the nacelle 2 will also tilt, and the axis FJ will also have a certain tilt to form a GH line with a certain radian. The outermost point of the hub. The measur...
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The invention discloses a measuring method of a windward elevation angle of a horizontal axis wind power generator set. The measuring method comprises the following steps that an outermost point J of a hub is determined when there is no wind, a first fixed point A in front of the set is determined, and a second fixed point B in front of the point A is determined; a first laser light source is arranged at the point A, when the projection point of the first laser light source is coincident with the point J, a ruler is placed at the point B in a standing mode, and the first laser light source angle KAB when there is no wind is determined; when the projection point of the first laser light source is coincident with the point J, a second laser light source is arranged in the plane composed of a column axis EF and a cabin axis FJ, and when the projection point of the second laser light source is coincident with the point J, a first measuring point C is determined. The first laser light source angle LAB and the a second measuring point D when the horizontal wind speed reaches the point A are determined through the same way. According to the measuring method of the windward elevation angle of the horizontal axis wind power generator set, a laser transmitter is adopted to obtain geometrical sideline on space measurement, the problem of fixed point drifting when the windward elevation angle on a cabin is measured is solved through ground fixed point, and the numerical value of the included angle and the edge is obtained through the geometrical method.
Description
technical field [0001] The invention belongs to the technical field of wind power generation, and in particular relates to a method for measuring the windward elevation angle of a horizontal axis wind power generating set. Background technique [0002] The structure of the horizontal axis wind turbine is as follows: figure 1 As shown, it includes a tower 1, a nacelle 2, and a blade 3. Under the influence of different wind speeds (wind energy loads), the wind turbine plane (the plane formed by the blades 3) will have a certain inclination, which leads to not only the deviation of the wind in the horizontal direction, but also the deviation in the vertical direction. wind deviation. Please refer to figure 1 , figure 1 It is a schematic diagram of the state of the horizontal axis generator set when there is no wind. When the wind speed is 0, that is, in the state of no wind, the plane of the wind rotor is the ST plane. There is no tilt both horizontally and vertically. p...
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IPC IPC(8): F03D17/00
CPCF03D17/00
Inventor 邱亚林赵应团赵明董鸿魁丁永胜崔海波耿向瑾李明亮
Owner 云南电力试验研究院(集团)有限公司