Identification and correction method of zero error of wind vane of wind turbine generator

Abstract

The invention relates to an identification method of the zero error of a wind vane of a wind turbine generator. The identification method includes the steps that operation data of the wind turbine generator in a demand period are read as an initial data set; operation data at the time of normal operation of a yaw control system are screen out from the initial data set as the data set to be analyzed; the data set to be analyzed is divided into N subsets at a certain yaw error interval; the quantized power performance index of each subset is calculated separately; the subset corresponding to themaximum value of the quantized power performance index is taken, and the upper bound and the lower bound of the yaw error are selected in the subset and averaged, that is, an identification value ofthe zero error of the wind vane of the wind turbine generator. The identification method is based on data driving, has high universality, scalability and portability, has great economic value and application significance for improving the performance of wind turbine generators, and has high theoretical research and practical application value on improving the power generation performance of wind turbine generators based on data analysis means.

Description

technical field [0001] The invention relates to a method for identifying and correcting a wind vane zero error of a wind turbine, in particular to a data-driven identification and correction method for a wind vane zero error of a wind turbine. Background technique [0002] Today, when fossil energy is increasingly scarce, wind power is gradually becoming popular in the field of renewable energy due to its low pollution, abundant reserves and high-quality renewable properties. Since the beginning of the 21st century, the increasing installed capacity and increasing construction efforts have shown that the wind power industry, one of the leading industries in the new renewable energy industry at home and abroad, is experiencing very rapid development. However, after more than ten years of vigorous development, a series of negative factors have gradually been exposed, the most notable of which is the deterioration of operating performance caused by the deteriorating components ...

AI Technical Summary

Problems solved by technology

[0006] The control strategy of the yaw system is to make the real yaw error θ by controlling the rotation of the nacelle r close to 0°, but due to the wind vane zero position error θ e The existence of , making the true value of yaw error θ r and measured value θ m There is always an error between them, that is, the established control target of the yaw system cannot be achieved

Images