VPNET: A co-simulation framework for analyzing communication channel effects on power systems

This paper describes a co-simulation framework for analyzing the interactions between advanced power systems and the digital communication networks that are used to monitor and control those systems. This analysis capability is critical to the successful design, verification, and operation of such systems as both the influences from each side will be considered. The framework, named VPNET, harnesses two tools - the Virtual Test Bed (VTB) for dynamic simulation of the multi-physics power system and OPNET for realistic representation of the communications network, including a wide range of protocols. Each part of the VPNET co-simulation framework is explained in detail, including strengths, weaknesses and challenges. The capabilities of VPNET are illustrated through a case study.