Integration of Electric Vehicles in Low-Voltage Distribution Networks Considering Voltage Management

Miguel Carrión, Rafael Zárate-Miñano and Ruth Domínguez
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Miguel Carrión: Department of Electrical Engineering, University of Castilla—La Mancha, 45071 Toledo, Spain
Rafael Zárate-Miñano: Department of Electrical Engineering, University of Castilla—La Mancha, 13400 Almadén, Spain
Ruth Domínguez: Department of Electrical Engineering, University of Castilla—La Mancha, 45071 Toledo, Spain

Energies, 2020, vol. 13, issue 16, 1-23

Abstract: The expected growth of the number of electric vehicles can be challenging for planning and operating power systems. In this sense, distribution networks are considered the Achilles’ heel of the process of adapting current power systems for a high presence of electric vehicles. This paper aims at deciding the maximum number of three-phase high-power charging points that can be installed in a low-voltage residential distribution grid. In order to increase the number of installed charging points, a mixed-integer formulation is proposed to model the provision of decentralized voltage support by electric vehicle chargers. This formulation is afterwards integrated into a modified AC optimal power flow formulation to characterize the steady-state operation of the distribution network during a given planning horizon. The performance of the proposed formulations have been tested in a case study based on the distribution network of La Graciosa island in Spain.

Keywords: charging points; electric vehicles; operation; planning; reactive power provision; voltage support (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2020
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