Decentralized Operation of an Isolated Microgrid with Storage Systems Using Multipliers with Alternating Directions

Abstract

In view of the challenging task of the operation of microgrids, this work presents a distributed strategy to manage an isolated system by the optimal dispatch of active and reactive power. The ADMM (alternating directions method of multipliers) is adapted to solve two optimization problems, finding power profiles along the day for generators and storage systems, taking into account the power flow and demand coverage constraints. The joint dispatch allows the solution to minimize the generation cost and provide ancillary services such as voltage regulation and losses reduction. The method is tested in a study case with batteries and renewable sources to quantify the effects of the proposed strategy and compare with a centralized optimization.