A Study on the Voltage Sag During the EVs Charging Considering Domestic Data (국내 데이터를 고려한 전기 자동차 충전 시 순시전압강하에 관한 연구)
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- Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
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- v.29 no.1
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- pp.37-46
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- 2015
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).
The purpose of this study was to develop a computer program for pattern making of women's Dooroomaky. The following results were given through utilizing the Computer in pattern making of Dooroomaky for women. 1. Computerization of the pattern making process was expected to provide higher accuracy and efficiency in pattern making. 2. Basic pattern was drafted by the hand-operation. In this study, this Dooroomaky basic pattern was selected. And a computer program for drafting was developed. Refer to