Dependability Modeling and Analysis of 5G Based Monitoring System in Distribution Grids

Due to large scale introduction of Distributed Energy Resources (DERs) in the next generation distribution grid, real time monitoring and control is increasingly needed to maintain a stable operation. In such scenario, monitoring systems and state estimation are key tools for getting reliable and accurate knowledge of the grid. These real time applications have strong requirements on communication latency, reliability and security. This paper presents a method, based on Stochastic Activity Network modeling, for analyzing the performance and dependability of advanced communication technologies, such as LTE and 5G, for supporting monitoring system applications. A novel software tool, based on Möbius linked to external libraries, is developed and employed to analyze the impact of communication failures on the state estimation of a distribution grid. The application of the tool and its capabilities are demonstrated through a case study. The approach is promising both with respect to strength as a modelling tool and the kind of results obtained.