Intelligent optimization wind turbine yaw control method and device and wind turbine

Abstract

The embodiment of the invention provides an intelligent optimization wind turbine yaw control method and device and a wind turbine. The method comprises the following steps of correcting a wind direction deviation value by adopting a preset fuzzy neural network prediction algorithm; controlling the starting of a yawing mechanism by respectively adopting different differentiated control strategiesfor high wind speed and low wind speed; and adjusting the direction of the yawing mechanism by adopting a hill climbing algorithm to find the maximum output power. The intelligent optimization wind turbine yaw control method and device and the wind turbine provided by the embodiment of the invention adopt the differentiated control strategy under high and low wind speeds, so that yaw action conditions are refined, and yaw action is more accurate.

Description

technical field [0001] The invention relates to the technical field of wind power generation, in particular to an intelligent optimization yaw control method and device for a wind turbine, and a wind turbine. Background technique [0002] As the fastest-growing green and clean energy, wind energy has received extensive attention and research all over the world because of its large reserves, wide distribution, and complete green and non-polluting characteristics. Because most of the regional wind direction conditions are changeable and irregular, therefore, The effective and accurate tracking of the wind direction by the wind turbine depends on the yaw system of the wind turbine, which can quickly and accurately control the wind, and is an indispensable core part of the wind turbine. [0003] The working principle and characteristics of the yaw system of large wind turbines: the yaw system generally consists of yaw bearings, yaw drive devices, yaw brakes, yaw counters, yaw hy...

AI Technical Summary

Problems solved by technology

[0004] The existing yaw-to-wind control mainly adopts a relatively simple control strategy. For one version, the yaw-to-wind control is performed when the wind direction deviation value is greater than a certain set threshold and lasts for a period of time. The advantage is that it is simple and easy to realize the application, but the disadvantage of this control will cause the fan to be in the range of wind direction deviation, the unit is not accurately aligned with the wind direction, and often there will be a certain angle when the wind direction changes, which will reduce the power obtained by the unit , and make the force unbalanced on the blade, increasing the fatigue load of the unit

[0005] It can be seen that the above-mentioned existing yaw control strategy obviously still has inconvenience and defects. In order to further improve the utilization rate of wind energy and ensure the reliable and stable operation of wind turbines, it is necessary to redesign and redesign the yaw control system and control strategy. research and development

Images