Angle measurement error compensation method based on wind speed and position influence

Abstract

The invention discloses an angle measurement error compensation method based on wind speed and position influence. The method comprises the following steps: the orientation of the position of a target fan engine room is divided into eight areas; angle measurement error curves of the eight orientations of the position of the engine room are separately acquired by an anemorumbometer, and an actually-measured wind direction deviation angle theta2 is compensated by the anemorumbometer according to the angle measurement error delta of the selected orientation, and then is sent to a main control system. According to the method, the angle measurement error curves under different engine room position orientations are acquired through the classification of the fan engine room position orientations. On the basis of considering the influence of the wind speed on the angle measurement error, microcosmic site selection (the engine room position orientations) is considered at the same time. The defect that an angle measurement error function theta=f(v) only compensates the angle measurement error of the anemorumbometer according to the wind speed, while the angle measurement error of the anemorumbometer caused by the microcosmic site selection factor cannot be compensated is solved; and the yawing precision of the impeller of the fan is improved, and the power generation efficiency of the fan is accordingly improved.

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. About the method of improving the wind turbine power generation efficiency during the learning period of the anemometer [0003] Such as 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 impe...

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Problems solved by technology

[0019] That is, the ordinary angle measurement error function δ=f(v) only relies on the wind speed to compensate the angle measurement error of the anemometer, but cannot compensate the angle measurement error of the anemometer caused by microscopic site selection factors

[0020] There is no report on the compensation method for the angle measurement error of the anemometer caused by micro-site selection factors.

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