Distributed Wardrop Load Balancing in Multi-MTU SCADA Systems

This paper presents a distributed strategy for load balancing in a multi-MTU SCADA system, whose automatic control layer is such that its MTU Plane is modeled as a networked dynamical system. The proposed control law, under which the considered system is proven to converge to a Wardrop equilibrium, is also used for the purpose of equilibrium recovery in load distribution among MTUs after the occurrence of a possible MTU failure event induced by a cyber-physical attack (e.g., a Denial of Service attack). Numerical simulations with respect to realistic scenarios are reported to show the effectiveness of the proposed approach.