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Design and comparison of multi-variable optimum excitation control and linear optimum PSS in large power systems
Author(s): 
Pages: 32-36
Year: Issue:  3
Journal: ELECTRIC POWER

Keyword:  多机电力系统电力系统稳定器多变量最优控制励磁控制稳定控制;
Abstract: 线性多变量最优控制和AVR+PSS是2种常用的励磁策略.在传统观念和以往文献中认为,前者的控制效果优于后者.指出以往的研究和认识忽略了两者的可比性,导致对比结果不够公正、严谨.基于相同的优化理论、性能指标,并使用相同的加权矩阵和迭代算法,在多机系统下分别设计了反馈4个量的多变量最优励磁控制器和附加反馈1个量的线性最优PSS.对2种励磁策略在小干扰稳定、非线性动态行为和暂态稳定极限方面进行对比分析,发现线性最优PSS尚能略显优势.阐述了励磁控制对比研究时应该注意的一些问题.
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