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Optimal Sizing of a Microgrid System with EV Charging Station in Park & Ride Facility

In recent years, global warming caused by massive greenhouse gas emissions has become a severe problem. As a countermeasure, the Paris Convention and the Basic Energy Plan have set CO2 reduction targets, including renewable energy power generation and electric vehicles (EV). However, an increase in the amount of electrical power charged to EVs due to the higher penetration rate will cause a significant load on the distribution system, making it difficult to control the distribution voltage. In this paper, we proposed a case where priority charging control based on a long-term charging contract is used for control at an EV charging station that combines Park & Ride with EV charging using renewable energy and a Battery Energy Storage System (BESS). In this EV charging station, stationary BESS in a small-scale off-grid eliminates fluctuations in renewable energy generation, power system problems, and traffic congestion.