Abstract:

Growing electric vehicle (EV) dissemination will increase charging infrastructure installation at home. Similar daily routines are associated with high peak loads due to simultaneous EV charging. However, predominantly residential power transmission is not designed for such high loads, yielding charging bottlenecks and restricting future charging at home. Addressing such bottleneck situations and including the EV driver perspective, the authors introduce a power allocation mechanism that considers the total travel time of the upcoming trip, consisting of actual driving time and time required for charging externally (including the detour to public charging facilities). Assuming that travel time generally negatively correlates with EV driver utility, the optimization model maximizes the resulting utility of EV drivers. The approach saves travel time and increases overall EV driver utility by avoiding unnecessary external charging stops due to an insufficient level of charge at the time of departure. Depending on the electricity mix, a decrease in carbon dioxide emissions may also be achieved.