State Feedback-Based Load Frequency Control of Multi-Area Power System Under Hybrid Attacks

This paper aims at solving the control problem of multi-area load frequency control (LFC) systems in the presence of periodic denial-of-service (DoS) and false data injection (FDI) attacks. The injected FDI attack signal is generated by an external dynamic systems. A switching impulsive observer is constructed to estimate the unknown FDI attack signal. Moreover, a new exponential stability criteria of the state feedback multi-area LFC systems under periodic DoS and FDI attacks is first derived by using attack parameter dependent time varying Lyapunov function method. Then, a co-design method of a resilient attack compensation controller and attack observer is developed. Finally, a numerical example is given to verify the effectiveness of the proposed theoretical results.