Abstract
Electric vehicle (EV) owners often have electric vehicle charging stations (EVCS) in their homes and leave the EV connected when it remains in the garage. This procedure does not guarantee that EV charging is adequate, and monitoring this period is necessary to identify anomalies. A study was developed where the EV charging curves was analyzed by clustering with K-means. The advantage presented in this work is that the necessary data for the charging analysis come from the EVCS power supply circuit. This proposal allows monitoring and rapidly classifying the data according to the form of the EV charging curves, with no need for the supervision of the input data. The unsupervised machine learning method can classify any situation by collecting data on the electrical power supplied to the EVCS. In this study, the classification was applied with learning performed in the history, identifying the clusters representing abnormal situations to identify anomalies in future charging curves. The results of the proposed approach presented around 27.8% as an anomaly in the EV charging, allowing to identify the moment in which it occurs and to make the necessary adjustments to avoid them.
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Acknowledgment
This work has received funding from National Funds through FCT -- Portugal and CAPES -- Brazil, under the project 2019.00141.CBM Desenvolvimento de Técnicas de Inteligência Artificial para a Otimização de Sistemas de Distribuição de Energia Elétrica. It was also supported in part by the Coordination for the Improvement of Higher Education Personnel (CAPES) -- Finance Code 001, and by the São Paulo Research Foundation (FAPESP), under grants 2015/21972-6 and 2018/20355-1.
The authors acknowledge the work facilities and equipment provided by GECAD research center (UIDB/00760/2020) to the project team and also acknowledge the support provided by the Thematic Network 723RT0150 “Red para la integración a gran escala de energías renovables en sistemas eléctricos (RIBIERSE-CYTED)” financed by the call for Thematic Networks of the CYTED (Ibero-American Program of Science and Technology for Development) for 2022. João Soares is also supported by National funds from FCT CEECIND/00420/2022.
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da Veiga, C.E., Ramos, C., Corchado, J.M., Fernandes, P., Soares, J. (2023). Analyzing Electric Vehicle Charging Behaviour Using Advanced Clustering Tools. In: Mehmood, R., et al. Distributed Computing and Artificial Intelligence, Special Sessions I, 20th International Conference. DCAI 2023. Lecture Notes in Networks and Systems, vol 741. Springer, Cham. https://doi.org/10.1007/978-3-031-38318-2_24
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