DET-Composite Secure Control for CPMG under Deception Attacks

In this paper, a dynamic event-triggered(DET) composite secure load frequency control strategy for the cyber-physical microgrid (CPMG) with the deception attacks is investigated. Firstly, to deal with the network resource limitation problem of the CPMG, a dynamic event-triggered mechanism is formulated, in which the attack estimation information is adopted to further enlarge the triggering intervals. Then, to defense the deception attacks actively, the attack estimator is formulated. It is worthy of pointing that the attack estimator utilizes the triggered control signals to save the network resource. Furthermore, the composited secure load frequency control strategy is constructed, which employs the estimated deception attack information, therefore the active defense performance is enhanced. Moreover, it is shown that the closed-loop system of the CPMG is input-to-state practical stable (ISpS). Finally, the case studies confirm the effectiveness of the proposed composite secure load frequency control method.