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arXiv · 2403.12215

Aggregate Peak EV Charging Demand: The Impact of Segmented Network Tariffs

Nanda Kishor Panda·Na Li·Simon H. Tindemans
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Abstract

Aggregate peak Electric Vehicle (EV) charging demand is a matter of growing concern for network operators as it severely limits the network's capacity, preventing its reliable operation. Various tariff schemes have been proposed to limit peak demand by incentivizing flexible asset users to shift their demand from peak periods. However, fewer studies quantify the effect of these tariff schemes on the aggregate level. In this paper, we compare the effect of a multi-level segmented network tariff with and without dynamic energy prices for individual EV users on the aggregate peak demand. Results based on real charging transactions from over 1200 public charging points in the Netherlands show that the segmented network tariff with flat energy prices results in more diverse load profiles with increasing aggregation, as compared to cost-optimized dispatch based on only dynamic day-ahead energy prices. When paired with dynamic energy prices, the segmented tariff still outperforms only dynamic energy price-based tariffs in reducing peaks. Results show that a balance between power thresholds and price per threshold is crucial in designing a suitable tariff, taking into account the needs of the power network. We also provide valuable insights to network operators by calculating the diversity factor for various peak demands per charging point.

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BibTeXRIS

Nanda Kishor Panda, Na Li, Simon H. Tindemans. 2024-03-18. Aggregate Peak EV Charging Demand: The Impact of Segmented Network Tariffs. https://arxiv.org/abs/2403.12215

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