Cited by 39Electric Vehicles and InfrastructureOptimal Power Flow DistributionElectric Power System Optimization

Optimal EV scheduling and voltage security via an online bi-layer steady-state assessment method considering uncertainties

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Jin, Yuwei, Amoasi Acquah, Moses, Seo, Mingyu, Ghorbanpour, Samira, Han, Sekyung, Jyung, Taeyoung·2023·Applied Energy

Abstract

Steady-state voltage security region (SVSR) is an important criterion that can intuitively and effectively evaluate the power system's operation security and overall safety margin. However, there is no literature on its application to electric vehicle (EV) proliferation. Since EV introduces dynamism and uncertainties to the grid, most existing indices cannot assess the grid accurately. Given this, we propose a load margin index (LMI) based on SVSR considering uncertainties. This is used to assess the impact of EV proliferation via a bi-layer optimal EV scheduling model. The upper layer of the model solves a dispatching plan for EV aggregators (EVA) by maximizing the LMI and minimizing the deviation between the upper and lower layer power schedules. The lower layer models each EV's charging/discharging strategy by minimizing the EV's operating cost, the EV user's target residual energy, and the deviation between the lower and upper layer schedules. We also employ a real-time scheduling plan to further adjust the day-ahead scheduling due to forecast errors. A case study based on the IEEE-33 node distribution network verifies the practicability and effectiveness of the proposed method.

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Crossref · 10.1016/j.apenergy.2023.121356

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Authors
Jin, Y., Amoasi Acquah, M., Seo, M., Ghorbanpour, S., Han, S., & Jyung, T.
Affiliations
Kyungpook National University (KR)
Corresponding author
Han, Sekyung
Venue
Applied Energy
Publisher
Elsevier BV
Published
2023-10
Volume
347
Pages
121356
ISSN
0306-2619 (ISSN-L)
OpenAlex
W4380995042
Cited by
38
References
62
Citations by year
2026: 10 · 2025: 14 · 2024: 13 · 2023: 1
FWCI
2.83
Type
journal article
Language
en
Open access
Locations
Applied Energy (publishedVersion, cc-by-nc)
Funders
  • Korea Agency for Infrastructure Technology Advancement
  • Ministry of Land, Infrastructure and Transport (RS-2020-KA-157909)
Topics
  • Physical Sciences › Engineering › Electrical and Electronic Engineering › Electric Vehicles and Infrastructure
  • Physical Sciences › Engineering › Electrical and Electronic Engineering › Optimal Power Flow Distribution
  • Physical Sciences › Engineering › Electrical and Electronic Engineering › Electric Power System Optimization
Keywords
electric vehicle scheduling, voltage security, electric vehicle aggregators, power system uncertainty, EV charging and discharging, real-time scheduling, forecast error, distribution networks

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