Distributed dual objective control of energy storage systems

Abstract

In this paper, a dual objective control problem is considered for energy storage systems. On one hand, the power output of the overall energy storage system should meet its reference. On the other hand, the state-of-energy of all the energy storage units should be balanced so as to maintain the maximum system power capacity. To achieve these two control objectives simultaneously, two distributed control approaches have been proposed depending on the uniformity of the energy capacities of the energy storage units. Case studies are provided to validate the effectiveness of the proposed control approaches.