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A new methodology for the coordinated design of robust decentralized power system damping controllers

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3 Author(s)
Ramos, R. ; Univ. Estadual do Oeste do Parana, Brazil ; Alberto, L. ; Bretas, N.

Summary form only given. This work presents the fundamentals and the algorithm of a new methodology for the design of robust power system damping controllers. The methodology provides controllers capable of fulfilling various practical requirements of this problem, which could not be simultaneously satisfied by the majority of the proposed robust control approaches until now. The design procedure is based on a special formulation of the dynamic output feedback control problem, in which the design problem can be expressed directly in the form of linear matrix inequalities. The formulation also allows the incorporation of decentralization constraints on the controller matrices, one of the practical requirements for power system damping controllers. Other practical requirement is satisfied with the use of the polytopic model (to ensure the robustness of the closed-loop system with respect to the variation of operating conditions). Moreover, the inclusion of a regional pole placement criterion allows the specification of a minimum damping factor for all modes of the controlled system. The results show the controller is able to provide adequate damping for the system oscillation modes.

Published in:

Power Engineering Society General Meeting, 2004. IEEE

Date of Conference:

10-10 June 2004

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