A resilient defense strategy against false data injection attack in smart grid

This paper deals with the robust adaptive resilient defense problem of cyber-physical systems (CPSs) for linear systems with false data injection attack (FDIA). By using the sliding mode technique, the attack problems of certain actuators can be solved. For improving resilience of power systems, firstly, the system model with attack signal is introduced. Secondly, the controller can ensure the reliable operation of the power system, where the gain of the nonlinear unit term is updated to automatically eliminate the effect of the FDIA and external disturbances. Finally, the effectiveness of the proposed resilient defense strategy is illustrated via a power system example with three generators and six buses.