Hasanvand Hamed, Mozafari Babak, Arvan Mohammad R, Amraee Turaj
Department of Electrical Engineering, Science and Research Branch, Islamic Azad University, Tehran, Iran.
Department of Electrical Engineering, Science and Research Branch, Islamic Azad University, Tehran, Iran.
ISA Trans. 2015 Nov;59:343-53. doi: 10.1016/j.isatra.2015.09.005. Epub 2015 Sep 26.
This paper addresses the application of a static Var compensator (SVC) to improve the damping of interarea oscillations. Optimal location and size of SVC are defined using bifurcation and modal analysis to satisfy its primary application. Furthermore, the best-input signal for damping controller is selected using Hankel singular values and right half plane-zeros. The proposed approach is aimed to design a robust PI controller based on interval plants and Kharitonov's theorem. The objective here is to determine the stability region to attain robust stability, the desired phase margin, gain margin, and bandwidth. The intersection of the resulting stability regions yields the set of kp-ki parameters. In addition, optimal multiobjective design of PI controller using particle swarm optimization (PSO) algorithm is presented. The effectiveness of the suggested controllers in damping of local and interarea oscillation modes of a multimachine power system, over a wide range of loading conditions and system configurations, is confirmed through eigenvalue analysis and nonlinear time domain simulation.
本文探讨了静止无功补偿器（SVC）在改善区域间振荡阻尼方面的应用。利用分岔和模态分析来确定SVC的最优位置和大小，以满足其主要应用。此外，使用汉克尔奇异值和右半平面零点来选择用于阻尼控制器的最佳输入信号。所提出的方法旨在基于区间对象和卡里托诺夫定理设计一种鲁棒PI控制器。这里的目标是确定稳定性区域以实现鲁棒稳定性、所需的相位裕度、增益裕度和带宽。所得稳定性区域的交集产生kp-ki参数集。此外，还提出了使用粒子群优化（PSO）算法对PI控制器进行最优多目标设计。通过特征值分析和非线性时域仿真，证实了所建议的控制器在多机电力系统的广泛负载条件和系统配置下对局部和区域间振荡模式的阻尼效果。
