A control and management approach of a DC Microgrid Virtual District

In the context of Smart Communities microgrids, the paper proposes a control approach for the power management among several DC microgrids, called by the authors Smart User Networks, aggregated in a Virtual Energy District. More specifically, the DC bus signaling control strategy is proposed as control approach for the power management of a single smart user network and for several smart user networks aggregated in a Virtual Energy District. The objective is to meet the power profile requirements sent by a supervision entity of the Virtual Energy District, named City Energy Provider. The principal characteristic of the proposed control approach is that the DC bus voltage of each Smart User Network is the only information carrier implementing the control strategy in a decentralized and distributed manner. In this way, also in case of absence of communication link among the components of a Smart User Network, a stable and continuous operating is guaranteed. Ansys Simplorer simulation results demonstrate the performance and the effectiveness of the proposed power management and control strategy.