CONGESTION MANAGEMENT AND LOOP FLOW CONTROL BY TRANSMISSION NETWORK RECONFIGURATION
G.P. Granelli, Paolo Marannino, Mario Montagna, Mario Innorta · International Journal of Power and Energy Systems · 2010
In this paper the problem of finding the optimal topological reconfiguration of a power transmission system is considered with the aim of providing a tool suited for congestion management. Network reconfiguration looks particularly appealing since it allows the relief of overloads by means of switching operations that may avoid generation or load curtailments. The techniques of corrective switching are profitably employed to formulate the problem of network reconfiguration for the purpose of congestion management. It is shown in the paper that the same optimization model employed in corrective switching can be used to solve the loop (or parallel) flow problem which occurs in today large interconnected systems. The solution of the resulting large-scale mixed-integer programming problem is carried out by a deterministic branch-and-bound algorithm included in the CPLEX optimization package. Tests were performed on the Italian network and on the European (UCTE) system.