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Mixed-sensitivity approach to H∞ control of power system oscillations employing multiple FACTS devices

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posted on 11.03.2009, 14:11 by B. Chaudhuri, B.C. Pal, Argyrios C. Zolotas, I.M. Jaimoukha, Tim C. Green
This paper demonstrates the enhancement of inter-area mode damping by multiple flexible AC transmission systems (FACTS) devices. Power system damping control design is formulated as an output disturbance rejection problem. A decentralized H∞ damping control design based on the mixed-sensitivity formulation in the linear matrix inequality (LMI) framework is carried out. A systematic procedure for selecting the weights for shaping the open loop plant for control design is suggested. A 16-machine, five-area study system reinforced with a controllable series capacitor (CSC), a static VAr compensator (SVC), and a controllable phase shifter (CPS) at different locations is considered. The controllers designed for these devices are found to effectively damp out inter-area oscillations. The damping performance of the controllers is examined in the frequency and time domains for various operating scenarios. The controllers are found to be robust in the face of varying power-flow patterns, nature of loads, tie-line strengths, and system nonlinearities, including device saturations.



  • Mechanical, Electrical and Manufacturing Engineering


CHAUDHURI, B. ... et al, 2003. Mixed-sensitivity approach to H∞ control of power system oscillations employing multiple FACTS devices. IN: IEEE Transactions on Power Systems, 18 (3), pp. 1149 - 1156




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This article was published in the journal, IEEE Transactions on Power Systems [© IEEE]. It is also available from: http://ieeexplore.ieee.org/xpl/RecentIssue.jsp?punumber=59. 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.