Angle measurement error compensation method for adding main control system data transfer error correction

Abstract

The invention discloses an angle measurement error compensation method for adding main control system data transfer error correction. The method comprises the steps of: eliminating an angle measurement error of an anemorumbometer; counting a density distribution histogram or distribution curve with a wind direction deviation angle of theta 3; determining existence of an angle transfer error between the anemorumbometer and a main control system; and performing the angle transfer error compensation. As the method can detect the angle transfer error of delta 2 between the anemorumbometer and the main control system, the limitation of a traditional angle measurement error compensation curve only capable of detecting an angle measurement error of delta 1 of the anemorumbometer, the win direction angle obtaining precision of the main control system is improved, the ventilation precision of a fan impeller is improved, and the power generation efficiency is improved. After the method is applied to a fan of a wind field in Hebei Province, the angle transfer error between the anemorumbometer and the main control system is detected as 3.5 degrees, so that the loss of electric energy production of 0.5% of the fan can be reduced.

Description

technical field [0001] The invention relates to an anemometer, in particular to an angle measurement error compensation method of the anemometer. Background technique [0002] Wind turbines convert the kinetic energy of wind into electricity, with the goal of generating as much electricity as possible while keeping the mechanical load on the wind turbine low. To successfully achieve the above goals, the key is to have the fan impeller accurately aligned with the wind direction. [0003] like Figure 1-2 As shown, according to the theory of wind turbine dynamics, when the wind speed is constant and the generator speed is lower than the rated speed, the power generated by the wind turbine is proportional to the cube of the cosine of the wind direction deviation angle θ. Assuming that the wind direction has no deviation, the power obtained by the fan impeller is Power1; when the wind speed is constant and the wind direction deviation angle is θ, the power obtained by the fan i...

AI Technical Summary

Problems solved by technology

[0014] Therefore, the above angle measurement error function can only be used for the angle measurement error δ of the anemometer 1 Compensate, but cannot compensate the angle transfer error δ of the main control system 2 , thereby reducing the power generation efficiency

[0015] At present, there is no report on the acquisition and correction method of the angle transmission error of the main control system.

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