A new H-infinity based PSS design using numerator-denominator perturbationrepresentation

A new H-infinity PSS design method which uses the numerator-denominator per turbation representation and includes the partial pole placement technique and a new weighting function selection method is proposed. This overcomes c ertain conventional H-infinity PSS design algorithm limitations. A robust P SS has been successfully designed by treating the highly non-linear charact eristic of the power system as model 'uncertainty'. The design is verified to have better performance for a wide range of system operating conditions when compared with the conventional PSS design. (C) 1999 Elsevier Science S .A. All rights reserved.