A Study on LQG/LTR Control for Damping Inter-Area Oscillations in Power Systems
A Study on LQG/LTR Control for Damping Inter-Area Oscillations in Power Systems
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DOI：
10.1109/tcst.2006.883232
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发表时间：
2007
影响因子：
4.8
通讯作者：
A. Zolotas;B. Chaudhuri;I. Jaimoukha;P. Korba
中科院分区：
文献类型：
--
作者：
A. Zolotas;B. Chaudhuri;I. Jaimoukha;P. Korba
本文介绍了一种鲁棒线性二次高斯（LQG）阻尼控制方案，用于改善电力系统区域间模式振荡的结果。还提出了一种技术，以保证最小相位/阻尼良好的传输零点适当的“平方”的设计工厂，高效的鲁棒恢复的目的。针对16机5区域电力系统（138阶），设计了一种7阶多输入单输出（MISO）集中控制器，通过采用适当的全局信号测量，提高了对关键区域间模式的阻尼。回路传递恢复（LTR），然后施加到加强控制器的鲁棒性的情况下，故障和未知的干扰。在频域和适当的时域仿真的基础上的非线性模型在各种不同的干扰下的设计系统的性能进行评估，
This brief presents results on a robust linear quadratic Gaussian (LQG) damping control scheme for improving the inter-area mode oscillations of power systems. A technique is also proposed to guarantee minimum-phase/well-damped transmission zeros by appropriately "squaring" the design plant, for the purposes of efficient robust recovery. A 7th-order multiple-input single-output (MISO) centralized controller is designed for a 16-machine, 5-area power system (138th order) reinforced with a thyristor-controlled series capacitor (TCSC) to improve the damping of the critical inter-area modes by employing appropriate global signal measurements. Loop transfer recovery (LTR) is then applied to reinforce controller robustness in the case of faults and unknown disturbances. The performance of the designed system is assessed in the frequency domain and via appropriate time-domain simulations based upon the nonlinear model under a variety of scenaria