基于反馈数学控制的大型风力机组变频信号抗扰动方法

Large-scale Wind Turbine Variable Frequency Signal Disturbance Resistance Method Based on Feedback Mathematics Control[HS)]

摘要:

当前的风力机组控制模型大都用于处理稳态风力机组,无法处理大型风力机组的变频信号产生的风力机磁通量的增减的振荡,容易出现较大的后续扰动和更严重的系统故障,控制结果存在较大的偏差和滞后性,为此,提出了一种基于反馈数学控制的大型风力机组变频信号抗扰动方法,将反馈数学控制模型引入到大型变频风力机组控制中,通过分析变频率干扰下风力机组存在的振荡特征,塑造风力机组静态电压稳定控制数学模型,采用变系数-阶梯度求解模型的最佳控制解,保持系统的负载均衡并且处于最佳状态,实验结果说明该种控制模型能够有效改善变频风力机组的暂态稳定性,更具有鲁棒性。

Abstract:

Current wind turbine control model are used to handle the steady wind turbine, unable to process variable frequency signal generated large wind turbine wind turbine flux increase or decrease of the oscillation, it's easy to have a larger follow-up disturbance of the system fault and more serious, control result has larger deviation and lag, to that end, this paper proposes a mathematics based on feedback control method of large wind turbine variable frequency signal resistance to disturbance, the feedback control model is introduced into the large wind turbine control, variable frequency interference of wind turbine is analyzed oscillation characteristics, shape the static voltage stability control mathematical model of wind turbine model are deduced with the method of variable coefficient - ladder, optimal control solution to keep the system load balance and in the best state. Experimental results show that this control model can effectively improve frequency transient stability of wind turbine, more robust.