EV急速充電器の高出力化によるピーク負荷への影響と充電需要の平滑化効果の分析

カテゴリ: 論文誌(論文単位)

グループ名: 【B】電力・エネルギー部門

発行日: 2024/02/01

タイトル(英語): Impact of Higher Power of EV Quick Chargers on Peak Load and Analysis of Smoothing Effect of Charging Demand

著者名: 高木　雅昭（（一財）電力中央研究所），池谷　知彦（（一財）電力中央研究所）

著者名(英語): Masaaki Takagi (Central Research Institute of Electric Power Industry), Tomohiko Ikeya (Central Research Institute of Electric Power Industry)

キーワード: 電気自動車，急速充電器，ピーク負荷，交通シミュレータ，平滑化効果 electric vehicle，quick charger，peak load，traffic simulator，smoothing effect

要約(英語): Large-scale introduction of electric vehicles (EVs) puts an electric load to the power system. Recently, the capacities of on-board batteries and the outputs of quick chargers have been increasing. Increase in the battery capacity allows EV owners to charge more freely; however, charging may concentrate at a certain time such as on Friday afternoon, which is before the weekend, because EVs travel relatively long distance on weekends. Therefore, we evaluate an impact on the peak load in area mesh unit, assuming high power of quick chargers and the change in charging behavior. Charging threshold is defined as follows: when a state of charge (SOC) of an EV falls below the charging threshold, the EV goes to a quick charging station to charge. We set up cases that the charging thresholds are raised on Friday afternoon to prepare for EV use on a weekend.Through the analysis targeting Aichi Prefecture, we obtained following findings. (1) As for the impact of the high power of quick chargers, the charging demand of a large number of EVs in the power system level is smoothed, but the same leveling effect is not expected when viewed locally, such as power distribution area level. Therefore, there is a possibility of overload of the power distribution facilities. (2) As for the impact of the change in charging behavior, even if the area mesh size is expanded, the smoothing effect of the charging demand cannot be expected. Therefore, it is especially necessary to take measures to avoid peak load at the power system level.

本誌: 電気学会論文誌B（電力・エネルギー部門誌） Vol.144 No.2 （2024） 特集：令和5年電力・エネルギー部門大会

本誌掲載ページ: 182-191 p

原稿種別: 論文／日本語

電子版へのリンク: https://www.jstage.jst.go.jp/article/ieejpes/144/2/144_182/_article/-char/ja/