Modeling a DC Microgrid with Real Time Power Management Using DC Bus Signalling

Abstract

Effective real time power management is required in a DC microgrid for handling intermittency of renewable energy sources, varying load demand and battery status so as to achieve DC bus voltage regulation. Also, it helps in better utilization of the resources, thus improving energy availability to the loads and reducing system cost. DC Bus Signaling (DBS) is an economical method for power management in a DC microgrid. A DBS scheme which ensures effective power handling under all conditions and without regard to sizing of grid elements is the focus of current work. In this paper, a modularized simulation model for a DC microgrid is presented, which allows easy extension for various purposes, such as long duration performance and economic analysis along with the power flow analysis in the DC grid.