Systems and methods for controlling a wind turbine

A system for controlling a wind turbine of a wind farm, the system comprising:

• a yaw drive mechanism for yawing the wind turbine;
• and
• a controller communicatively coupled to the yaw drive mechanism, the controller comprising at least one processor configured to perform a plurality of operations, the plurality of operations comprising:
• determining a performance differential for the wind turbine at multiple sampling intervals of a yaw event, the performance differential being indicative of a ratio of a monitored performance parameter to an estimated performance parameter or the wind turbine,
• determining a trendline for the wind turbine correlating the performance differential to a deviation of a wind direction at each of the multiple sampling intervals from a first yaw angle for the yaw event,
• determining a yaw angle offset as a difference between an angle associated with a vertex of the trendline and the first yaw angle;
• and
• adjusting a second yaw angle of the wind turbine based, at least in part, on the yaw angle offset.