Abstract:
Wind farm coordinated control is one of the important technologies to reduce the impact of wakes in wind farms. In order to make wind turbines under cooperative control achieve the purpose of increasing power generation safely and reliably in the real-time changing incoming flow, a cooperative control method based on stable yaw is proposed. In this method, the analytical wake model is used to simulate the flow field in real time; the differential evolution algorithm is used to optimize the yaw angle of wind turbines; the key point is to consider the stable yaw control logic of the wind turbine so that it can stably execute the optimal cooperative control command. The simulation results in the dynamic wind environment show that, compared with the traditional control strategy, the cooperative control method can increase the overall power generation of the wind farm by 4.76%. And this method can make each unit only need a small amount of active yaw action to achieve the purpose of reducing the influence of wake in the real-time changing turbulent wind conditions. The research results show that the wind farm cooperative control method based on active yaw proposed in this paper has certain practical application value.