Distributed coordination-by-constraint strategies in networked multi-area power systems

A distributed constrained supervisory strategy for Load/Frequency control problems in networked multi-area power systems is presented. The aim is at finding a coordination strategy able to reconfigure, whenever necessary in response to unexpected load changes and/or faults, the nominal set-point on frequency and generated power to the generators of each area so that viable evolutions arise for the overall power system during transients and a new post-fault sustainable equilibrium is reached. In order to demonstrate the effectiveness of the strategy an example on a four-area power system is presented.