A Low-Voltage DC Backbone with Aggregated RES and BESS: Benefits Compared to a Traditional Low-Voltage AC System

The increasing penetration of PV into the distribution grid leads to congestion, causing detrimental power quality issues. Moreover, multiple small photovoltaic (PV) systems and battery energy storage (BESSs) result in conversion losses. A low-voltage DC (LVDC) backbone interconnect these assets would decrease losses is a promising solution for more optimal integration systems. can be replaced by shared with large common installations BESS. Sharing renewable aggregation are activities that stimulated European Commission lead substantial benefit terms self-consumption index (SCI) self-sufficiency (SSI). In this study, an LVDC investigated compared using AC (LVAC) system. It found cable increase 0.9 percent points 12 traditional SCI increases 2 SSI 6 LVAC system meter. shown only beneficial level 65% BESS reduced 22% same SSI.