Impact of Electric Vehicle Charging Demand on a Jeju Island Radial Distribution Network

Munseok Chang, Sungwoo Bae, Gi Gab Yoon, Sang Ho Park, Youngdo Choy

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

3 Scopus citations

Abstract

For the solution of air pollution caused by internal combustion engine vehicles, many countries have encouraged the usage of electric vehicles (EVs). However, by allowing more EVs without smart charging control or proper power grid operational strategies, undesirable problems related to the power grid operation may occur. The purpose of this paper is to evaluate the impact of EVs on radial distribution networks with residential and commercial loads based on Jeju island, the largest island in the coast of Korea. A probabilistic approach was used to determine EV charging demand. This study considered various variables affecting the EV charging demand such as charging starting time, initial state-of-charge of a battery, and EV battery charging characteristics. The total power demand and voltage deviation in the distribution systems were generated by a back/forward sweep method for a power flow analysis, and the energy losses on distribution networks were analyzed. The simulation results of this study showed that the power peak demand on the distribution systems can increase up to 60%, the system voltage can fall below 6.6% during the evening, and their energy losses can increase up to 66% because of 40% EVs penetration among the total vehicles in the studied cases.

Original languageEnglish
Title of host publication2019 IEEE Power and Energy Society Innovative Smart Grid Technologies Conference, ISGT 2019
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781538682326
DOIs
StatePublished - 2019 Feb
Event2019 IEEE Power and Energy Society Innovative Smart Grid Technologies Conference, ISGT 2019 - Washington, United States
Duration: 2019 Feb 182019 Feb 21

Publication series

Name2019 IEEE Power and Energy Society Innovative Smart Grid Technologies Conference, ISGT 2019

Conference

Conference2019 IEEE Power and Energy Society Innovative Smart Grid Technologies Conference, ISGT 2019
CountryUnited States
CityWashington
Period19/02/1819/02/21

Keywords

  • Electric vehicle
  • Energy losses
  • Power flow analysis
  • Radial distribution networks
  • Voltage deviation

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