Power System Stability Control Based on the Characteristics of the Observed Information via Excitation Control

This paper presents a method for tuning power system stabilizer (PSS) parameters to control low-frequency oscillations. The dynamics of low-frequency oscillations can be identified by wide area phasor measurements. Hence, the theory builds a low-order model that reflects the dynamics of the full system, based on observation components that are included in system oscillations. Since the model reflects the real structure of an excitation control such as PSS and Automatic Voltage Regulator (AVR), also it can tune AVR parameters at the same time. As a result, the PSS parameters tuning can damp effectively low-frequency oscillations.