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A study on LQG/LTR control for damping inter-area oscillations in power systems

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posted on 12.03.2009, 12:21 by Argyrios C. Zolotas, B. Chaudhuri, I.M. Jaimoukha, Petr Korba
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

History

School

  • Mechanical, Electrical and Manufacturing Engineering

Citation

ZOLOTAS, A.C. ... et al, 2007. A study on LQG/LTR control for damping inter-area oscillations in power systems. IEEE Transactions on Control Systems Technology, 15 (1), pp. 151 - 160.

Publisher

© IEEE

Version

VoR (Version of Record)

Publication date

2007

Notes

This article was published in the journal, IEEE Transactions on Control Systems Technology [© IEEE]. It is also available from: http://ieeexplore.ieee.org/xpl/RecentIssue.jsp?punumber=87. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.

ISSN

1063-6536

Language

en