Effect of time delay asymmetries in power system damping control

TitleEffect of time delay asymmetries in power system damping control
Publication TypeConference Paper
Year of Publication2017
AuthorsFelipe Wilches-Bernal, Ricky Concepcion, Jason C Neely, David A Schoenwald, Raymond H Byrne, Brian J Pierre, Ryan T Elliott
Conference Name2017 IEEE Power & Energy Society General Meeting (PESGM)
Date Published07/2017
Conference LocationChicago, IL, USA

Distributed control compensation based on local and remote sensor feedback can improve small-signal stability in large distributed systems, such as electric power systems. Long distance remote measurements, however, are potentially subject to relatively long and uncertain network latencies. In this work, the issue of asymmetrical network latencies is considered for an active damping application in a two-area electric power system. The combined effects of latency and gain are evaluated in time domain simulation and in analysis using root-locus and the maximum singular value of the input sensitivity function. The results aid in quantifying the effects of network latencies and gain on system stability and disturbance rejection.