Component-based dual decomposition methods for the OPF problem

Abstract

Up to this day, most optimization and control algorithms in power systems, such as the optimal power flow (OPF), are computed in a centralized fashion. With the increasing penetration of distributed energy resources however, the feasibility of the centralized computation paradigm is at stake. Against this backdrop, this paper proposes and compares four different component-based dual decomposition methods for the nonconvex alternating current (AC) OPF problem, where the modified dual function is solved in a distributed fashion. The main contribution of this work is that it demonstrates that a distributed method with carefully tuned parameters can converge to globally optimal solutions despite..