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Robust power system controller design based on measured models

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3 Author(s)
F. Fatehi ; Dept. of Electr. Eng., Montana State Univ., Bozeman, MT, USA ; J. R. Smith ; D. A. Pierre

This paper presents combined power system identification and controller design methods to dampen low-frequency oscillations in multimachine power systems. An iterative closed-loop identification method is used to find a linear model for the power system. Linear quadratic Gaussian controller design with loop transfer recovery (LQG/LTR), based on a generalized technique for the nonminimum phase (NMP) power system model, is used to design the controllers. Simulation results are presented to demonstrate the robustness of these controllers based on closed-loop identified plant models and the amount of loop transfer recovery that is possible for NMP plant models

Published in:

IEEE Transactions on Power Systems  (Volume:11 ,  Issue: 2 )