Coordination strategies for networked control systems: A power system application

In this paper we present a distributed supervisory strategy for load/frequency control problems in networked multi-area power systems. Coordination between the control center and the areas is accomplished via data networks subject to communication latency which is modelled by time-varying time-delay. The aim here is at finding strategies able of reconfiguring, whenever necessary in response to unexpected load changes and/or faults, the nominal set-points on frequency and generated power of each area so that viable evolutions arise for the overall networked system and a new suitable equilibrium is reached.