Impacts of Plug-in EVs and decentralized power generation on distribution system operation

Abstract

Plug-in Electric Vehicles (PEVs) have gained popularity in recent years due to their environmentally friendly attributes. However, integrating PEVs into distribution systems poses novel challenges and opportunities. This research paper undertakes a comprehensive assessment of the repercussions of PEVs and distributed generation (DG) integration on the distribution system’s reliability, power loss, and voltage stability. In order to alleviate peak loads, select PEVs are deployed in Vehicle-to-Grid (V2G) mode. The integration of DG units, particularly solar Photovoltaic (PV) and wind turbine (WT) systems, is explored to mitigate the potential strain of PEV charging on the distribution system. The uncertainty of renewable DG and PEV charging-discharging, along with time-varying residential and commercial loads, are included in the analysis. Power interruption duration and frequency-based reliability index are considered in this work. The combined effects of PEVs’ Grid-to-Vehicle (G2V) and V2G mode and DG integration are comprehensively investigated, and the impact assessment is conducted on the modified IEEE 33 bus distribution system to ensure the practicality and applicability of the research findings.

Keywords

• Distribution system planning
• Distributed generation (DG)
• Electric Vehicles
• Renewable Energy
• Load models