The Transactions of The Korean Institute of Electrical Engineers (전기학회논문지)

The Korean Institute of Electrical Engineers (대한전기학회)
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A Study on the Transformer Spare Capacity in the Existing Apartments for the Future Growth of Electric Vehicles

전기자동차 보급에 따른 기존 아파트의 변압기용량 한계시점에 대한 연구

  • Choi, Jihun (Dept. of Electrical Engineering, Hanyang University) ;
  • Kim, Sung-Yul (Dept. of Electrical Energy Engineering, Keimyung University) ;
  • Lee, Ju (Dept. of Electrical Engineering, Hanyang University)
  • Received : 2016.08.19
  • Accepted : 2016.11.25
  • Published : 2016.12.01
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Abstract

Rapid Expansion of EVs(Electric Vehicles) is inevitable trends, to comply with eco-friendly energy paradigm according to Paris Agreement and to solve the environment problems such as global warming. In this paper, we analyze the limit point of transformer acceptable capacity as the increase of power demand considering EVs supply in the near future. Through the analysis of transformer utilization, we suggest methods to analyze the spare capacity of transformer for the case of optimal efficiency operation and emergency operation respectively. We have the results of 18.4~29% spare capacity for the charging infrastructure to the rated capacity of transformer by analyzing the existing sample apartments. It is analyzed that the acceptable number of EVs is 0.09~0.14 for optimal efficiency operation and 0.06~0.13 for emergency operation. Therefore, it is analyzed the power demand of EV will exceed the existing transformer spare capacity in 7~8 years as the annual growth rate of EVs is prospected 112.5% considering current annual growth rate of EVs and the government EV supply policy.

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References

  1. Ministry of Environment, "EV charging information system, ev.or.kr"
  2. Seong-Kyoo Jang, Jae-Sun Huh, Sung-Min Cho, Hee-Sang Shin, Jae-Chul Kim, "The Study on Planning of EV Charging Facilities using Prevalence Estimates of EV in the Public Housing", Journal of KIIEE, Vol.24, No. 10, pp. 118, 2010.
  3. Kihong Lee, Hoyoung Kee, Wanhee Byun, "Review of Design Components of Recharging Infrastructure for Electrical Vehicles in Apartments", Journal of KIIEE, Vol. 26, No. 10, pp. 113, 2012.
  4. Jihun Choi, "A Study on Optimal Design of an Apartment Housing Transformer Capacity", Hanyang University, pp. 20, 2013.
  5. IEA, "Global EV Outlook 2016", pp. 4, 5, 2016.
  6. The export-import bank of Korea, "EV market status and prospect", Vol.2011-01, pp. 6, 2011.
  7. KERI, "A Development Planning of Electric Power Supply Technologies for Electric Vehicle Charging Infrastructure System", pp. 22, 2011.
  8. Ministry of Environment, "A Study on the support standard & demand-based composition for EV supply", pp. 20, 97, 2011.
  9. Ministry of Environment, "2011 Guideline for Electric Vehicle public charging infrastructure", pp. 11-12, 2011.
  10. LSIS, "LS Mold Transformer Catalog", pp. 7, 2016.
  11. Korea Transportation Safety Authority, "2015 car mileage statistics", pp. 3, 76, 2015.
  12. The Korea Transport Institute, Sangkyu Hwang, Kyuok Kim, Younshik CHUNG, "Policy Implications for global electric Vehicle Market Changes", pp. 44, 2010.
  13. Ministry of Trade, Industry and Energy, "2030 energy new industry strategy for new climate system", pp19, 2015.