Abstract
The use of Power System Stabilizers (PSS) to improve the dynamic stability of power system is not a new idea. Present day complexity in power system demands PSS must be robust enough to ensure adequate system performance over a wide range of system operating conditions to come out from the problem of oscillatory instability. H2 and H∞ Norm based robust control techniques have now been developed and are being used for the controller design in power system. This paper deals with design of PSS using weighted mixed sensitivity H∞ robust control theory. The effectiveness of the power system stabilizer designed through this method is demonstrated by simulation of a sample power system for various load conditions using MATALB.
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