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为了提高大型水轮机组远距离输电的安全稳定性,在具有刚性水锤的一类水轮发电机的综合非线性模型的基础上,根据非线性微分几何控制理论,提出了新的调节输出设计法。该方法可以克服现有调速器非线性控制面临的零动态设计瓶颈,从而推导出调速器的一种新型非线性控制律——综合非线性调速器控制器(CNGC)。同时,论证了理想水轮机模型是该综合非线性模型在额定运行点线性化近似的结果。数字仿真实验表明,所提出的CNGC不但效果远好于常规控制律,而且优于现有的基于理想水轮机模型推导的非线性控制律(GNOPSS)。
In order to improve the safety and stability of long-distance transmission of large-scale hydro-turbine units, based on the non-linear differential geometry control theory, a new adjustable output design method is proposed based on the comprehensive nonlinear model of a hydro-generator with rigid water hammer. . This method can overcome the zero dynamic design bottleneck of the existing nonlinear governor governor and deduce a new type of nonlinear governor governor - the integrated nonlinear governor controller (CNGC). At the same time, it is demonstrated that the ideal turbine model is the result of linear approximation of the integrated nonlinear model at rated operating point. Numerical simulation results show that the proposed CNGC is not only better than the conventional control law but also superior to the existing nonlinear control law (GNOPSS) derived from the ideal turbine model.