Acquisition method and device of full-field wind speed correction functions and wind power field
A wind speed correction and wind farm technology, which is applied to the monitoring of wind turbines, wind turbines, data processing applications, etc., can solve the problems of high accuracy, inability to meet the wind speed correction of different aircraft positions, and low cost. The method is simple and reduces Capital cost and technology cost, effect of improving efficiency
Active Publication Date: 2019-05-21
GUODIAN UNITED POWER TECH
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Problems solved by technology
[0007] The technical problem to be solved by the present invention is to provide a method for obtaining the wind speed correction function of the whole field, so that it can solve the problem that the single wind speed correction function in the wind farm with complex terrain cannot meet the wind speed correction of different aircraft positions, and at the same time, it has the advantages of fast speed and low cost. and high accuracy
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[0038] The present invention addresses the problem of differences in the wind speed correction coefficients of the nacelle anemometers of wind turbines at different locations in the same wind farm under complex terrain. Based on the k-means method and the contour coefficient evaluation method, the present invention proposes an acquisition of the full-field wind speed correction function method.
[0039] Such as figure 1 , 3 As shown, this embodiment provides a method for obtaining a full-field wind speed correction function, including:
[0040] S1 fits the wind speed correction function according to the measured power curve and the theoretical power curve of each wind turbine. The method is: use the measured power curve as the abscissa and the theoretical power curve as the ordinate, and use a linear function to fit; obtain all the wind farms The wind speed correction function of the wind turbine, the form of each correction function is y=kx+b, where y is the corrected wind speed, ...
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The invention provides an acquisition method and device of full-field wind speed correction functions and a wind power field comprising the device. The method comprises steps as follows: fitting a wind speed correction function according to an actually measured power curve of each wind turbine generator and a theoretical curve to obtain wind speed correction functions of all wind turbine generators in the wind power field; classifying all the wind speed correction functions with a k-means method and a silhouette coefficient evaluation method; averaging each type of wind speed correction function, and determining a plurality of wind speed correction functions suitable for the overall wind power field finally. The problem that a single wind speed correction function in the wind power field in complicated terrain cannot meet the requirement of wind speed correction of different spaces is solved, and the acquisition method and device of the full-field wind speed correction functions and the wind power field have the characteristics of rapidness, low cost and high accuracy and are suitable for being popularized and applied.
Description
Technical field [0001] The present invention relates to the technical field of wind power, in particular to a method, device and wind farm for obtaining a full-field wind speed correction function. Background technique [0002] Drawing the power curve using SCADA operating data is currently the main method for evaluating the output performance of wind turbines. It mainly uses the revised cabin anemometer to measure the wind speed and the actual power of the unit for analysis. Although the main engine manufacturers make corrections to the wind speed measured by the cabin anemometer, due to the difference in terrain, wind inflow angle, and turbulence intensity, the results of the wind speed measured by the cabin anemometers of different units are still different even though they are in the same wind field. , The accurate drawing of the power curve has a great influence. In other words, the current use of a unified wind speed correction function for the same wind farm cannot meet ...
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IPC IPC(8): F03D17/00G06Q50/06
Inventor 袁凌潘磊姜德旭王晓丹丁岩杜雯焦冲
Owner GUODIAN UNITED POWER TECH