Wind turbine generator independent variable pitch control optimization method and system based on laser radar
An independent pitch and laser radar technology, applied in the direction of engine control parameters, wind engine control, wind power generation, etc., to achieve the effect of reducing unit load, reducing unit cost, and reducing frequent actions
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Embodiment 1
[0038] Such as figure 1 As shown, Embodiment 1 of the present disclosure provides a lidar-based independent pitch control optimization method for wind turbines, including the following steps:
[0039] Obtain the wind speed values measured by the laser radar at the preset distances in front of the wind turbine at multiple heights, and perform numerical fitting on the wind speed and height data to obtain the real wind shear index and wind shear formula;
[0040] The height of the center point of each blade is determined by the azimuth angle of the wind rotor, and then the wind speed values of the three blade center points are determined by the wind shear formula;
[0041] Calculate the fatigue load value under different wind shear exponents to determine the critical wind shear exponent;
[0042] When the real wind shear index is greater than or equal to the critical wind shear index, the independent pitch control is turned on, and the pitch angle adjustment coefficient of e...
Embodiment 2
[0073] Embodiment 2 of the present disclosure provides a lidar-based independent pitch control optimization system for wind turbines, including:
[0074] The real wind shear index acquisition module is configured to: obtain the wind speed values at multiple heights in front of the wind turbine measured by the laser radar, and perform numerical fitting on the wind speed and height data to obtain the real wind shear index and wind shear formula;
[0075] The blade wind speed acquisition module is configured to: determine the height of the center point of each blade by the azimuth angle of the wind rotor, and then determine the wind speed values of the three blade center points by the wind shear formula;
[0076] The critical wind shear index acquisition module is configured to: calculate fatigue load values under different wind shear indices, and determine the critical wind shear index;
[0077] The pitch control module is configured to: start the independent pitch contro...
Embodiment 3
[0080] Embodiment 3 of the present disclosure provides a computer-readable storage medium, on which a program is stored. When the program is executed by a processor, the lidar-based independent pitch control optimization method for wind turbines as described in Embodiment 1 of the present disclosure is implemented. The steps in , which are:
[0081] Obtain the wind speed values measured by the laser radar at the preset distances in front of the wind turbine at multiple heights, and perform numerical fitting on the wind speed and height data to obtain the real wind shear index and wind shear formula;
[0082] The height of the center point of each blade is determined by the azimuth angle of the wind rotor, and then the wind speed values of the three blade center points are determined by the wind shear formula;
[0083] Calculate the fatigue load value under different wind shear exponents to determine the critical wind shear exponent;
[0084] When the real wind shear index...
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