716 / 2019-04-24 19:55:41

An Iterative Design of PSS4B Stabilizers Using Contoured Controller Bode Plots

Contoured controller Bode (CCBode) plot, IEEE PSS4B, low frequency oscillation, power system stabilizer (PSS), space searching approach.

This paper proposes an iterative design method for PSS4B stabilizers based on the contoured controller Bode (CCBode) plot. A PSS4B stabilizer is viewed as two filters connected in series: a band-pass filter and a phase compensator. A space searching approach is used to tune the phase compensator which ensures that the phase frequency response of the PSS4B stabilizer is bounded within an acceptable limit; a CCBode plot then helps tune the magnitude frequency response of the band-pass filter so as to achieve a better stability performance over a wide range of frequency band. Case studies of a four-machine two-area system are reported to demonstrate the effectiveness of the proposed method.