A Study on the Voltage Sag During the EVs Charging Considering Domestic Data

국내 데이터를 고려한 전기 자동차 충전 시 순시전압강하에 관한 연구

Go, Hyo-Sang;Kim, Jun-Hyeok;Kim, Eung-Sang;Kim, Chul-Hwan

  • Received : 2014.08.11
  • Accepted : 2014.11.03
  • Published : 2015.01.31


In order to charge EVs, they have to be connected to distribution system. Therefore, if unprecedented numbers of EVs are connected to power systems, it could result in deterioration of power quality, overload, and other system problems. In this paper, the effects of voltage sag on the distribution system due to the connection of EVs is evaluated by considering related field data of Republic of Korea such as the number of gasoline-fueled vehicles, seasonal load of power system and the monthly and daily real-time traffic volume. The distribution system and EVs are modeled using the Electro Magnetic Transients Program (EMTP).


Voltage Sag;Electro Magnetic Transients Program (EMTP);Real-Time Traffic Volume;Electric Vehicle(EV);Distribution system;Power Quality


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Supported by : 한국에너지기술평가원(KETEP)