제주 전기자동차 충전인프라 실증단지 충전패턴을 고려한 공동주택 전력수요예측에 관한 연구

Abstract

This paper aims to study on prediction of power demand considering the charging usage pattern of the demonstration apartment in Jeju. The various researches are conducted over power usage rate, many studies show that the capacity of power transformer are over-designed considering the current power usage is low. The study is analyzed that the average charging power for once is 20.5㎾h and the average SoC(State of Charge) is 50.7% considering driver charging pattern, and the simultaneous charging rate reaches 43.7% at around 8 pm. It is necessary to secure the current design capacity of transformer until the countermeasure for the electrical method are established based on the result of the reliable study over EV charging power, since the transformer could be overloaded considering the practical usage rate of the existing apartments transformer and the charging demand by electric vehicles in 2030.