Study of the impact of electric vehicles fleets in HV electric power grids based on an uncontrolled charging strategy

2017 IEEE International Autumn Meeting on Power, Electronics and Computing (ROPEC) Pub Date : 2017-11-01 DOI:10.1109/ROPEC.2017.8261680

Hugo E. Vega Ayala, Norberto García Barriga

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引用次数: 3

Abstract

This paper addresses the impact of the integration of plug-in electric vehicles (PEV) in a high-voltage (HV) electric grid located in the metropolitan area of the city of Morelia, Mexico. A penetration scenario of 10.5%, which corresponds to 31316 vehicles, is considered by allocating electric vehicles to substations. A time domain modelling of an electric vehicle (EV) and an AC Level-2 charger is implemented in a PSS/E-based simulation platform. Furthermore, an uncontrolled charging strategy is implemented in this paper, which is based on the assumption that EVs owners are free to connect and charge their vehicles whenever they want. Power flow solutions are reported in terms of nodal voltages, power losses and loading impacts in the 115 kV sub-transmission system, substation transformers and transmission system. Results show that the load due to the EVs can help to the nodal voltages regulation in the grid during certain times of the day. However, a large number of EVs can significantly increase the losses and exceed the capacity of the transformers depending on the load curve of each substation.

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基于不受控充电策略的电动汽车对高压电网的影响研究

本文讨论了插入式电动汽车(PEV)在墨西哥莫雷利亚市区高压(HV)电网中集成的影响。通过将电动汽车分配到变电站，考虑渗透率为10.5%的情景，即31316辆汽车。在基于PSS/的仿真平台上实现了电动汽车和交流二级充电器的时域建模。此外，本文还实现了一种不受控制的充电策略，该策略基于电动汽车车主可以随时自由连接和充电的假设。从115 kV分输变电系统、变电站变压器、输电系统的节点电压、功率损耗、负荷影响等方面分析了潮流解决方案。结果表明，电动汽车负荷对电网特定时段的节点电压调节有一定的促进作用。然而，根据各变电站的负荷曲线，大量的电动汽车会显著增加损耗，甚至超过变压器的容量。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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2017 IEEE International Autumn Meeting on Power, Electronics and Computing (ROPEC)

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