Nonlinear Modeling of Information Embedded Power Systems On All-Electric Naval Combatants

Abstract

Future power systems on all-electric naval combatants will be heavily relying on real-time computer network communication of measurement data between remote computing elements for purposes such as: autonomous control and system-wide fight-thru reconfigurability. It is important to investigate and understand how random communication delays can affect the accuracy of the measurements as viewed by destination data processing and control elements. This paper develops a model of a shipboard electrical power system, with its inherent embedded communication system, for the purpose of studying the characteristics of power measurement errors due to communication delays. This model is referred to as an embedded shipboard power system to emphasize the inclusion of information variables that represent measurements that have been delivered across the communication and observed at a control station. These information variables are added to the standard power model for the energy balance within the power system. A non-linear stochastic model is developed, which is composed of both the physical infrastructure of the power as well as the embedded computer network communication infrastructure. An experimental platform has also been designed to validate the developed model.