Method for automatically correcting and controlling yaw of wind driven generator set

Abstract

The invention discloses a method for automatically correcting and controlling yaw of a wind driven generator set. According to a yaw basic principle of the wind driven generator set, a fan corresponds to a power peak value of a generator when the fan is over against wind and under the condition of the same wind speed; and under an ideal state, namely an error does not exist in an anemoscope, the power peak value should appear at a zero point or a position near the zero point. A measuring result of the anemoscope is deviated when a yaw angle corresponding to the power peak value of the generator is not zero, and the data results acquired in an actual fan set are a large amount of scattered points, statistic analysis is conducted according to the data points, processing is further conducted, the yaw angle value corresponding to the power peak value at the moment is calculated, the deviation value is converted into the offset dimension of the yaw angle, correction is conducted in a program, and anemoscope correction processing can be finished on software, so that the fan can yaw continuously and correctly. The method provided by the invention is simplified, easy to process and small in calculation quantity, and offset dimension data with high precision can be acquired.

Description

technical field [0001] The invention relates to the technical field of yaw control of a wind power generating set, in particular to an automatic yaw correction control method of a wind power generating set. Background technique [0002] During the operation of wind turbines, it is often necessary to dispatch the nacelle to yaw, so that the wind turbines face the wind correctly, so as to track the optimal wind speed to obtain higher wind energy conversion efficiency, thereby obtaining high-quality power generation. The premise of yaw is to accurately know the wind direction near the wind wheel, which requires the wind direction indicator on the nacelle to work correctly. However, due to the wear and tear of mechanical parts or the attenuation of the sensitivity of the sensing parts, the hardware of the wind vane cannot guarantee the accuracy of the returned data. At this time, it is hoped that the wind turbine can obtain the correct yaw through proper processing of the softwa...

AI Technical Summary

Problems solved by technology

The current wind turbine controller is generally PLC (Programmable Logic Control Unit), which uses structured text (ST language) for programming. Although it can provide considerable computing and processing capabilities and the possibility of algorithm realization, it is still difficult to complete complex Too high algorithm, based on the above reasons and the volume of the control program itself, it is hoped that the calculation amount of the added extension program will be controlled below a certain level

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