Chapter 4 - Event-triggering control of cyberphysical power systems

Abstract

The Industry Revolution 4.0 pushes the industry to digitize all its operations. Cyberphysical Power Systems (CPPS), such as autonomous automobile systems and medical monitoring are examples of this revolution. However, as these systems are interconnected via the internet, they become more vulnerable to cyberattacks and in particular, stealthy attacks. Cyberattacks could affect the operations of CPPS and cause physical damages before any indication. So, there is a need to design a secure control system to withstand in these circumstances. In this chapter, an event-triggering control (ETC) scheme is designed for discrete time CPPSs contain random measurements and actuation delays and subject to simultaneous hybrid distributed denial-of-service (DDoS) and deception attacks. The cyberattacks are designed as Bernoulli distributed white sequences with variable conditional probabilities. Moreover, an event-triggered scheme is proposed to decrease the communication overhead in the system, where the measurement's signal is sent only under a certain triggering condition. An observer-based control is designed to maintain the stability of the CPPS under all possible scenarios of single or hybrid simultaneous attacks in the forward and/or backward communication. Linear matrix inequalities are used to represent the overall control scheme. At the end, an illustrative example is presented discussed to show the effectiveness of the proposed methodology.