DC Nanogrid using IEC 61850

Small-scale power grids are considered as a ways to improve energy efficiency and reduce greenhouse gas emissions. The DC nanogrid is a low-voltage and low-power digital power grid with a kW-level of a small distributed autonomous grid module that can bundle power and communication among small-scale power grids. In this paper, we propose a USB-based DC nanogrid and implement a hardware testbed using IEC 61850 communication profile, an international standard for power automation, to verify the validity and grid connection of the DC nanogrid system.