Wind direction weighted filtering-based automatic yaw controlling method for wind generating set

Abstract

The invention belongs to the technical field of wind generating system controlling and particularly relates to a wind direction weighted filtering-based automatic yaw controlling method for a wind generating set. The wind direction weighted filtering-based automatic yaw controlling method includes setting a select time t of a yaw control system of the wind generating set, and acquiring a yaw angle error array Wd of the yaw control system of the wind generating set in the select time; setting weighting coefficients of yaw angle error values of the yaw control system of the wind generating set during the select time; acquiring the yaw angle error values after weighting filtering, and performing yaw control on the wind generating set according to the yaw angle error values after the weighting filtering.

Description

technical field [0001] The invention belongs to the technical field of wind power generation system control, and in particular relates to an automatic yaw control method for a wind power generating set based on wind direction weighted filtering. Background technique [0002] When the wind direction changes and exceeds the design value, the wind turbine should automatically yaw to face the wind, absorb wind energy as much as possible, and reduce power loss. In the yaw control system of the existing wind turbines, in order to reduce the number of yaw actions and reduce the fatigue load of the yaw mechanism, the wind direction is judged by the average value over a period of time, which can avoid the yaw caused by the instantaneous wind direction change. However, the time selection is very important. If the time selection is too long, the yaw action will cause a large power loss. If the time selection is too short, the yaw action will be too frequent. service life. Contents o...

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Problems solved by technology

In the yaw control system of the existing wind turbines, in order to reduce the number of yaw actions and reduce the fatigue load of the yaw mechanism, the wind direction is judged by the average value over a period of time, which can avoid the yaw caused by the instantaneous wind direction change. However, the time selection is very important. If the time selection is too long, the yaw action will cause a large power loss. If the time selection is too short, the yaw action will be too frequent. service life

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