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Power system stabilizer scheduled by a fuzzy logic based supervisor from a local compensator network

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4 Author(s)
Tavares da Costa, C., Jr. ; Departamento de Engenharia Eletrica, Univ. Fed. do Para, Belem, Brazil ; Barreiros, J.A.L. ; de Oliveira, R.C.L. ; Barra, W., Jr.

This work presents a digital adaptive power system stabilizer (PSS) which operates in a gain scheduling scheme. Its parameters are designed for several differently selected operating points in a PxQ plane (active and reactive powers), and saved offline under the form of a look-up table in the microcomputer that implements the control action. The complete set of all designed PSSs is called a local compensator network (LCN). During working, the a fuzzy logic based supervisor identifies the current operating point, and synthesizes the PSS parameters from the LCN. The test presented shows good performance for this PSS, when compared to a conventional (nonadaptive) one

Published in:

Power Tech Proceedings, 2001 IEEE Porto  (Volume:2 )

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