Obtaining method, device and wind farm of full field wind speed correction function
A wind speed correction, wind farm technology, applied in wind turbine monitoring, wind engine, data processing applications, etc., can solve the problems of inability to meet wind speed correction at different positions, low cost, high accuracy, and reduce capital costs and technology. Cost, method is simple, the effect of improving efficiency
Active Publication Date: 2020-04-28
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 aims at the problem that the wind speed correction coefficients of the nacelle anemometers in different positions of the wind turbines in the same wind farm are different under complex terrain. The present invention proposes an acquisition of the full field wind speed correction function based on the k-means method and the contour coefficient evaluation method method.
[0039] Such as figure 1 , 3 As shown, this embodiment provides a method for obtaining the full-field wind speed correction function, including:
[0040] S1 fits the wind speed correction function according to the measured power curve and theoretical power curve of each wind turbine. The wind speed correction function of the wind turbine, the form of each correction function is y=kx+b, where y is the wind speed after correction, x is the actual wind speed, k is the slope of the linear function, and b is the intercept of the linear function;
[0041] Wherein, the acquisition source...
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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 invention relates to the technical field of wind power, in particular to a method and device for obtaining a full-field wind speed correction function, and a wind farm. Background technique [0002] Using SCADA operating data to draw power curves is the main means to evaluate the output performance of wind turbines. It mainly uses the revised engine room anemometer to measure the wind speed and the actual power of the unit for analysis. Although the main engine manufacturers have corrected the wind speed measured by the anemometer in the nacelle, due to the difference in terrain, wind inflow angle, and turbulence intensity, although they are in the same wind field, the results of wind speed measured by the anemometer in the nacelle of different units are still different. , Accurate drawing of the power curve has a great impact. That is to say, using a unified wind speed correction function for the same wind field can no longer meet the actual nee...
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IPC IPC(8): G06Q50/06F03D17/00
Inventor 袁凌潘磊姜德旭王晓丹丁岩杜雯焦冲
Owner GUODIAN UNITED POWER TECH