Research On Yaw Control Optimization Of Wind Turbine Considering Load Calculation

In the "14th Five-year Plan",China clearly put forward that the landmark turning point of China’s transition from industrial civilization to ecological civilization is to achieve carbon peak and carbon neutrality,and the full utilization of wind energy is one of the important ways to achieve this goal.The yaw control system of wind turbine is the key factor affecting the power efficiency of wind turbine.By optimizing the yaw control strategy,the wind energy efficiency of wind turbine can be effectively improved.The control strategy of wind turbine usually takes the production efficiency indexes such as active power and generating capacity as the direct guiding standards,while the load characteristics of wind turbine,except the ultimate load,usually do not participate in the design of control strategy.The wind generator based on active yaw control system of the common control strategy,the comprehensive consideration of wind turbines under the condition of aerodynamic load characteristics,with the wind turbine blade root bending moment at the top of the column thrust and aerodynamic load as the goal,the two main active power and wind power unit together as the optimization goal,optimize the yaw control key parameters and validated with Bladed software implementation.Firstly,the Bladed model is linearized,and the wind condition is taken as input,active power and load are taken as output to build the linearized model of 2MW wind turbine.According to IEC61400 standard for turbulent wind generation,the typical experimental wind conditions for yaw control strategy optimization were generated.Based on the experimental wind conditions,a linearized calculation model for yaw control process of wind turbine was established by taking the threshold and delay time of yaw control strategy as the object.Based on the linear model of yaw control system,after do optimization to solve in a typical experiment under the wind conditions,will be calculated in the process of solving the wind generator under the steady state of aerodynamic load through the rain flow count method,combined with the linear accumulation damage criterion,calculate the corresponding load equivalent fatigue load,according to the theory of pareto optimization searching for more optimal controller parameters.At the same time,based on the yaw control strategy before and after optimization,PLC program was written to reproduce the yaw control strategy,and the semi-physical real-time simulation of the dynamic yaw control process of wind turbine was realized by Bladed Hardware Test software module and PLC Hardware controller,and the efficiency improvement analysis and equivalent fatigue load evaluation were made according to the real-time simulation results.Finally,this paper proposes a wind turbine yaw control strategy based on API interface optimization and load analysis of cloud computing method,the linear model of wind turbines will be calculated and the evaluation function of the equivalent fatigue load secondary development,the formation of new industrial application and implement of cloud services deployment,thereby improving the efficiency of the arithmetic to solve and realize the sharing function algorithm.