負荷平準化による発電燃料費低減を目的とした電気自動車の多数台充電制御効果の評価

概要

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High penetration of variable sources of renewable power generation will lead to operational difficulties of supply-demand balancing of an entire power system. The mass deployment of electric vehicles (EVs) and plug-in hybrid electric vehicles (PHEVs) will also cause significant changes in electricity demand. Therefore, controlling and managing the charging time of EVs/PHEVs are effective and imperative for improvement of the balancing in the power system operation. We assumed trip patterns of EVs in a model of the future Tokyo power system and analyzed the power system loads, including the charging load of EVs, assuming several charging control scenarios. It was verified that charging-time controls are substantially effective to reduce the fuel costs of the power system. Further, we found that load leveling by multi-car charging management scenario indicated the best results in terms of the fuel cost in all cases.