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Hosting Capacity of Distribution Networks for Controlled and Uncontrolled Residential EV Charging with Static and Dynamic Thermal Ratings of Network Components
  • As'ad Zakaria,
  • Chengyan Duan,
  • Sasa DJokic
As'ad Zakaria
The University of Edinburgh
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Chengyan Duan
The University of Edinburgh
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Sasa DJokic
The University of Edinburgh

Corresponding Author:[email protected]

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This paper proposes an approach to evaluate the loading limits of distribution networks due to increasing EV connections. It focuses on two parameters: after-diversity maximum demand (ADMD) and maximum daily energy demand (MDED). Using actual EV charging data from the UK, Monte Carlo simulations generate daily charging profiles, identifying ADMD, MDED, and seasonal variations. ADMD, MDED, and per-hour maximum EV charging demands are combined with UK residential load profiles before EV connection. Their maximum demands are assessed against thermal rating limits, establishing the network’s hosting capacity (HC) for uncontrolled EV charging. To determine the maximum safe number of connected EVs, different scheduling methods for controlled EV charging are compared, considering per-hour maximum demand values, thermal limits, and MDED. This defines the network’s HC for fully controlled EV charging. The approach is demonstrated on the IEEE 33-bus test network. Pre-EV residential demands are obtained from a UK MV substation, and ambient data is collected from a UK Met Office weather station. Results provide a range of network HC values for uncontrolled and controlled EV charging, representing lower and upper limits. These limits correlate with firm and non-firm network HC concepts and guide optimal network upgrades for exceeding these limits.
30 Jun 2023Submitted to IET Generation, Transmission & Distribution
05 Jul 2023Submission Checks Completed
05 Jul 2023Assigned to Editor
06 Jul 2023Reviewer(s) Assigned
28 Aug 2023Review(s) Completed, Editorial Evaluation Pending
01 Sep 2023Editorial Decision: Revise Minor
15 Sep 20231st Revision Received
18 Sep 2023Submission Checks Completed
18 Sep 2023Assigned to Editor
18 Sep 2023Review(s) Completed, Editorial Evaluation Pending
18 Sep 2023Reviewer(s) Assigned
04 Oct 2023Editorial Decision: Accept