Improved Energy Storage Management and PV-Active Power Control Infrastructure and Strategies for Microgrids

Abstract

The ancillary services that could be provided by the distributed generators and the energy storage systems are expected to give great added value to the microgrid-based smart grid topologies. These services must be integrated into the control system of the microgrids. In this paper, the pseudo-state-of-charge concept is introduced to improve energy storage management. Additionally, a noninvasive-to-the-inverter PV-plant control strategy, based on the remote control of PV-strings actuators, is presented and applied on a microgrid-based smart grid topology. The operation of the microgrid with the improved control infrastructure and the iterative algorithm is compared, in terms of reliability, to a microgrid with a different control strategy and topology. The experimental results highlight the advantages of the developed strategy.