Study of a dynamic effect-based method for wind farm yaw control optimization

ABSTRACT

The wake effect will cause wind farm power loss. Wake redirection is a wind farm control strategy to reduce wake losses and increase total power output. In the previous research, analytical wake models with steady-wind-condition assumptions were always employed to optimize the yaw angle of wind turbines, in which wind direction change and yaw process were not considered. Therefore, this study proposes a dynamic yaw control methodology for wind farms to balance the energy gain and the number of yaw actions. It was found that when the dead band is 10°, the past time is 15 min, and the wind direction bins step is 8°, the number of yaws of the front row unit is only 97.2% of that under the conventional control, and the total power generation is increased by 3.41%.

KEYWORDS:

• Wind turbine wake
• yaw control
• dynamic wind turbine wake
• yaw optimization
• wind farm control

Acknowledgements

This work was supported by the National Key Research and Development Program of China (No.2019YFE0104800) and National Natural Science Foundation of China project “Study on fluid-structure interaction of wind turbine blade with large deformation based on elastic actuator line model” (NSFC 52006071).

Disclosure statement

No potential conflict of interest was reported by the author(s).

Additional information

Funding

The work was supported by the National Key Research and Development Program of China [2019YFE0104800]; National Natural Science Foundation of China [52006071].