Dissipativity as a unifying control design framework for suppression of low frequency oscillations in power systems

In this paper we present a unifying framework for design of controllers tha t suppress low-frequency oscillations in power systems. The proposed method ology is based an the physical notion of dissipativity, and on its system-t heoretic counterparts. We illustrate the capabilities of this framework in four application areas: power system stabilizers (PSSs), supplementary cont rol for a high-voltage de (HVDC) lines, auxiliary control for a static var systems (SVCs) and regulation of thyristor-controlled series capacitors (TC SCs). All case studies involve a standard benchmark case of a multi-machine power system, and all controllers use only locally available information.