Damping Enhancement for SMIB Power System Equipped with Partial Feedback Linearization AVR

Abstract

Pertaining to different stages of grid operation i.e., transient period and post-transient period, transient stability and voltage regulation (VR) respectively, are the main properties of power system control. In contrast with linear automatic voltage regulator (AVR), a partial feedback linearizing (PFBL) based AVR exhibit superior voltage regulation but damping of rotor mode is not satisfactory. To enhance the system damping a power system stabilizer (PSS) is augmented to PFBL AVR. With aid of eigenvalue analysis and nonlinear time domain simulation is performed on a single machine infinite bus (SMIB) power system. It is shown that proposed method exhibit markedly enhanced performance in comparison to the existing control schemes.