Periodic Event-Triggered Resilient Control for Multiarea Interconnected Power Systems under Denial-of-Service Attacks

Abstract

The open communication network environment brings potential security trouble to the power grid. In this paper, a state model for the load frequency control is described, and it is studied under DoS attacks. Firstly, the limitation conditions of DoS attacks and control targets are given. An $H_{\infty}$ observer and event triggering mechanism are added to the sensor system. A predictor is designed in the controller system. Due to the existence of the maximum transmission interval, Lyapunov stability theorem is used to prove that the input to the state of the system is stable. Finally, a two-area model is used to proof availability of the control scheme.