Robust PSS Design for a Multivariable Power System

The paper deals with the frequency domain design of a robust power system stabilizer (PSS) for a multivariable power system. The proposed PSS design procedure is based on a novel approach that applies the independent design methodology to the so-called equivalent subsystems along with the well-known Small Gain theory and the robust stability conditions in the M-Δ setup. Theoretical results have been applied to the design of a robust multivariable PSS for a part of the Power System of the Slovak Republic.