5Physical and Cybersecurity in a Smart Grid Environment
Jing Xie1, Alexandru Stefanov1 and Chen‐Ching Liu1,2
1 School of Mechanical and Materials Engineering, University College Dublin, Dublin, Ireland
2 School of Electrical Engineering and Computer Science, Washington State University, Pullman, WA, USA
As a critical infrastructure, the electric power grid is vulnerable with respect to malicious physical and cyberattacks. Indeed, the importance of physical and cybersecurity for smart grids has been highlighted by recent intrusion incidents worldwide. Various types of sensors, instrumentation, information and communications technology (ICT), computational methodologies, and security controls have been developed to enhance the physical and cybersecurity of the smart grid. In this chapter, critical vulnerabilities of a smart grid that can be exploited for physical and cyber intrusions are discussed. A comprehensive survey is conducted on the state‐of‐the‐art research to enhance the physical and cybersecurity in a smart grid environment. Furthermore, the interdependency of physical and cybersecurity is illustrated with an intrusion scenario. The emphasis is on the physical and cybersecurity of power substations. Computer simulation results for a case study are presented.
INTRODUCTION
Critical infrastructures are complex systems that form the foundation of a modern society, e.g. large‐scale networks for water, transportation, communications, and energy. Their reliability and secure ...