发表机构
State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources (North China Electric Power University)（可再生能源与新型电力系统国家重点实验室（华北电力大学））
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
本文针对可再生能源并网电力系统的受激振荡问题，提出一种基于反馈控制的抑制方法学，明确稳定性与振荡风险的关系，给出反馈路径的极点零点配置及增益选择准则，为各类振荡抑制方案设计提供方法参考。
AI 中文摘要
如本系列论文的第一部分所述，即使在小扰动下，位置接近的极点也会产生高振幅振荡，这类振荡被称为受激振荡。作为本系列的第二篇文章，本文提出了一种受激振荡抑制的方法学。首先，研究了系统稳定性与振荡风险之间的逻辑关系，明确稳定性既非振荡风险的必要条件也非充分条件。其次，分析了影响复平面上极点和零点位置的主导因素，及其有效性和局限性，尤其针对反馈控制系统，分析了反馈路径对闭环系统极点-零点分布的影响。在此基础上，提出了受激振荡抑制的方法学，结合极点间距较小的系统的降阶传递函数，阐述了反馈路径传递函数的极点零点阶次关系、配置以及增益选择准则。最后，给出了反馈路径传递函数的极点、零点和增益的参数调谐方案。所提出的基于反馈控制的受激振荡抑制方法学不局限于特定设备，可作为各类振荡抑制方案设计的方法学参考。
英文摘要
As presented in Part I of this series, closely located poles can produce high-amplitude oscillations even under small perturba-tions, which are referred to as stimulated oscillations. As the second installment of this series, this paper develops a method-ology for stimulated oscillation mitigation. Firstly, the logical relationship between system stability and oscillation risk is in-vestigated, clarifying that stability is neither a necessary nor a sufficient condition for oscillation risk. Secondly, the dominant factors affecting the pole and zero position on the complex plane, as well as their effectiveness and limitations are analyzed. For feedback control systems in particular, the influence of feedback paths on the pole-zero distribution of closed-loop systems is ana-lyzed. On this basis, a methodology for stimulated oscillation mitigation is proposed. Combined with the reduced-order trans-fer function of systems with closely separated poles, the order relation and configuration of poles and zeros for the feedback path transfer function, together with the criteria for gain selec-tion, are elaborated. Finally, a parameter tuning scheme for the poles, zeros and gain of the feedback path transfer function is presented. The proposed methodology for stimulated oscillation mitigation based on feedback control is not restricted to specific devices and can serve as a methodological reference for the design of diverse oscillation suppression schemes.
Comments8 pages, 8 figures
