Abstract
The ramp-up of battery electric vehicles (BEVs) could lead to severe grid issues but also enables flexibility. This paper provides a better understanding of the challenges and potentials of integrating BEVs in power grids. Three charging strategies were modelled on four use cases and six low-voltage grids for urban and rural areas. Especially in rural areas, where many cars charge at home overnight, the charging strategy significantly affects grid issues. Purely market-oriented strategies can lead to high load peaks and thus to transformer and line overloading, while even a relatively simple, balanced charging strategy can significantly reduce grid issues.
Highlights
The share of renewable energies in electricity generation is steadily increasing, exceeding 50% in 2020 for the first time in Germany [1]
The examinations of this paper show the influence of the different charging strategies on peak loads in different use cases and how many charging points are occupied at the same time
It was investigated how mobility behaviour differs in urban and rural areas and what influence this has on charging performance
Summary
The share of renewable energies in electricity generation is steadily increasing, exceeding 50% in 2020 for the first time in Germany [1]. The share of battery electric vehicles (BEVs) is increasing. In 2020, the share of new electric passenger cars registrations in Germany almost tripled. Over one per cent of all registered passenger cars are electric [2]. This share will grow strongly in the coming years. Battery electric vehicles offer a high potential for this flexibility demand due to the built-in storage and the possibility to charge flexibly during the entire standing time
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