Wind power generator system and wind energy data error correction method and yaw control method

Abstract

The invention relates to a wind power generator system, a wind energy data error correction method and a yaw control method. Firstly, orthogonal decomposition is carried out on initial wind speed vector detected by wind energy data detection equipment, the initial wind speed vector is divided into an initial wind speed axial vector and an initial wind speed tangential vector, and then the tangential speed vector of the wake flow at the wind energy data detection equipment is calculated according to parameters such as tangential induction factors of the wake flow of a draught fan; and then thecorrected wind speed tangential vector is calculated according to the initial wind speed tangential vector and the wake flow tangential speed vector, finally, the corrected wind speed tangential vector and the initial wind speed axial vector are combined to obtain the corrected wind speed vector. The corrected wind speed tangential vector has removed a draught fan wake flow factor, so that after the corrected wind speed tangential vector and the initial wind speed axial vector are combined, the combined wind speed and wind direction are basically consistent with the actual wind speed and winddirection in front of the draught fan, deviation between the detected wind energy data and real wind energy data is eliminated, the authenticity of the data is guaranteed, and follow-up yaw control isfacilitated.

Description

technical field [0001] The invention relates to a wind power generator system, a wind energy data error correction method and a yaw control method. Background technique [0002] In the past 20 years, the wind power generation market in the world has developed rapidly, and several wind power generation equipment suppliers have emerged at home and abroad. Stand focused focus. The wind rotor alignment error is a key factor affecting the power generation efficiency of wind turbines. [0003] The traditional wind direction indicator and wind speed measuring instrument are installed behind the wind wheel and above the nacelle, such as figure 1 shown. Moreover, the Chinese patent application document with the application publication number CN104454349A discloses a wind power generator system, including equipment such as blades, wind vane, and anemometer. The wind vane and anemometer are also arranged behind the wind wheel and above the nacelle. The measured wind energy data is ...

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Problems solved by technology

[0004] The purpose of the present invention is to provide a wind energy data error correction method for wind power generators, to solve the problem of deviation between the wind energy data detected by the wind energy data detection equipment and the real wind energy data

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