Probabilistic event-triggered protocol for switched power systems under multi-strategy deception attack

Abstract

This paper focuses on the security control of a discrete-time switched power system utilizing a probabilistic event-triggered protocol under a multi-strategy deception attack. To better characterize the system mode’s switching behavior, a novel nonhomogeneous sojourn probability is introduced, which is modulated by a upper-level deterministic switching signal. Furthermore, a multi-strategy deception attack is established, wherein different deception attack strategies randomly target various nodes during signal transmission through the network carrier to the controller. To optimize network resource utilization, a probabilistic event-dependent triggering protocol based on a triggering threshold interval is presented, which effectively reduces unnecessary communication, leading to resource savings. Subsequently, sufficient conditions for the closed-loop system’s input-to-state stability in probability is derived. Finally, the effectiveness of the proposed control strategy is demonstrated through simulation results, which verify its capability in enhancing system security and stability, while efficiently utilizing network resources.