Journal of Korean Society of Industrial and Systems Engineering (산업경영시스템학회지)

Society of Korea Industrial and System Engineering (한국산업경영시스템학회)
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Evaluation of Operational Efficiency for Electric Vehicle Charging Stations Using Data Envelopment Analysis

자료포락분석을 이용한 전기차 충전소 운영효율성 평가

  • Son, Dong-Hoon (Department of Civil and Environmental Engineering, The Hong Kong University of Science and Technology) ;
  • Gang, Yeong-Su (Asia Pacific School of Logistics, Inha University) ;
  • Kim, Hwa-Joong (Asia Pacific School of Logistics, Inha University)
  • 손동훈 (홍콩과학기술대학교 토목환경공학과) ;
  • 강영수 (인하대학교 아태물류학부) ;
  • 김화중 (인하대학교 아태물류학부)
  • Received : 2020.07.22
  • Accepted : 2020.08.26
  • Published : 2020.09.30
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Abstract

Evaluating the operational efficiency of electric vehicle charging stations (EVCSs) is important to understand charging network evolution and the charging behavior of electric vehicle users. However, aggregation of efficiency performance metrics poses a significant challenge to practitioners and researchers. In general, the operational efficiency of EVCSs can be measured as a complicated function of various factors with multiple criteria. Such a complex aspect of managing EVCSs becomes one of the challenging issues to measure their operational efficiency. Considering the difficulty in the efficiency measurement, this paper suggests a way to measure the operational efficiency of EVCSs based on data envelopment analysis (DEA). The DEA model is formulated as constant returns of output-oriented model with five types of inputs, four of them are the numbers of floating population and nearby charging stations, distance of nearby charging stations and traffic volume as desirable inputs and the other is the traffic speed in congestion as undesirable one. Meanwhile, the output is given by the charging frequency of EVCSs in a day. Using real-world data obtained from reliable sources, we suggest operational efficiencies of EVCSs in Seoul and discuss implications on the development of electric vehicle charging network. The result of efficiency measurement shows that most of EVCSs in Seoul are inefficient, while some districts (Nowon-gu, Dongdaemun-gu, Dongjak-gu, Songpa-gu, Guro-gu) have relatively more efficient EVCSs than the others.

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References

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