Analyzing impact of communication network topologies on reconfiguration of networked microgrids, impact of communication system on smart grid reliability, security and operation

Smart grids are cyber-physical systems that integrate an information and communication technology (ICT) network with the existing power system infrastructure. As smart grids become more mature, the interdependency between the cyber and physical systems becomes stronger. Because of this, the traditional reliability assessment, power grid operations, and power system security assessment techniques, where the physical layer of the power system is considered in isolation and without considering the impact of the communication network, are not sufficient for providing a comprehensive picture of the system anymore. Hence, an interdependent study is needed where both the physical layer and the communication network are taken into account. The objective of this paper is to provide a survey of some of the latest studies and findings in the literature about the impact of communication imperfections on smart grid reliability and operation. Also, a brief overview of some of the recent cyber security studies related to power grid operation has been presented. Finally, some current research questions and future trends in smart grid communications and cyber security are discussed.