降阶模型误差对输电系统最优励磁控制的微动态稳定鲁棒性的影响  

Effect of Reduced Order Modelling Error on Micro-Dynamic Robust Stability of Optimal Excitation Regulator in a Transmission System

作　　者：杨冠鲁[1] 黄东惠[1] 

机构地区：[1]太原工业大学电机系,030024

出　　处：《控制理论与应用》1993年第2期190-197,共8页Control Theory & Applications

摘　　要：本文探讨了“串级阵阶模型误差”(包括控制回路中的惯性环节)对线性二次型(LQ)最优控制的稳定鲁棒性的影响。指出这种模型误差是造成LQ最优控制稳定鲁棒性差的一类重要因素。然后结合输电系统的实际情况分析计算了降阶模型误差对最优励磁控制的微动态稳定鲁棒性的影响。结果表明,被略去的小惯性时间常数对最优励磁控制的微动态稳定鲁棒性有较大的影响。In this paper the effect of 'serial reduced order modelling error' (including the inertia links in regu-lation loop) on the robust stability of LQ optimal regulators is analysed. It is shown that the modelling error is one of the important factors that affect the robust stability of LQ optimal regulators. The effect of the modelling error on the micro-dynamic robust stability of an optimal excitation regulator is calculated according to the actual conditions in a transmission system. The results show that the small inertia time constants neglected have a greater effect on the micro-dynamic robust stability of the optimal excitation regulator.

关 键 词：鲁棒性 励磁系统 最优控制 

分 类 号：TM769[电气工程—电力系统及自动化]