Small signal stability analysis and distributed control with communications uncertainty

TitleSmall signal stability analysis and distributed control with communications uncertainty
Publication TypeConference Paper
Year of Publication2016
AuthorsRaymond H Byrne, Dan Trudnowski, Jason C Neely, David A Schoenwald, D. G Wilson, L. J Rashkin
Conference Name2016 International Symposium on Power Electronics, Electrical Drives, Automation and Motion (SPEEDAM)
Date Published08/2016
Conference LocationCapri, Italy

With increasing renewable penetrations and advancements in power electronics associated with smart grid technologies, distributed control of the power grid is quickly becoming a necessity. Once communications are introduced into a control system, the impacts of latency and unreliable communications quickly become a priority. Vector Lyapunov techniques are well suited for the analysis of control systems with structured perturbations. These perturbations can be employed to model uncertainty in communications as well as parameter uncertainty. In this paper, we present results for small signal stability of a simplified two area power system model for several scenarios: bandwidth limited local communications and tie line uncertainty; local communications and bandwidth limited global communications combined with tie line uncertainty; and uncertainty in global communications. These results are intended to be a starting point for the analysis of the impact of communications uncertainty on the stability of power systems.