Residential Smart Grids: Before and after the appearance of PVs and EVs

Abstract

Power distribution systems are experiencing higher load levels, unbalanced distributed generation, new load diversity, and more uncorrelated events than before. To quantify this change, the authors contrast the electrical state of the largest Smart Grid residential community in Austin, Texas before and after the appearance of its PVs and EVs. This community is the research focus of many wanting to prevent unwanted consequences from an uncontrolled growth in residential generation and load. The authors use surface and filled contour plots to show existing and future electrical footprints, the impact on transformer utilization, feeder demand, current unbalance, voltage drop, and on distribution losses.