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Simple adaptive control for a power-system stabiliser

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3 Author(s)
J. Ritonja ; Fac. of Electr. Eng. & Comput. Sci., Maribor Univ., Slovenia ; D. Dolinar ; B. Grcar

The paper discusses the stability problem of a synchronous generator connected to an infinite bus. Owing to the time-consuming tuning of a conventional power-system stabiliser and its non-optimal damping in the entire operating range, simple adaptive control is proposed. The following issues are presented: the influence of the operating point (loading) on the eigenvalues of a simplified linearised model of a synchronous generator; the model reference adaptive control for almost strictly positive real plants; and the simple adaptive power-system stabiliser derived from the presented model reference adaptive control theory. The control-system design was carried out for the simplified linearised model of a synchronous generator; but for the evaluation of the control-system performance in the single machine case under small-signal and large-signal disturbances, the full-order nonlinear model of the synchronous generator was used. Simulation and experimental results show the applicability of the presented approach

Published in:

IEE Proceedings - Control Theory and Applications  (Volume:147 ,  Issue: 4 )