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논문 기본 정보

저자정보
(Soongsil University) (Soongsil University) (Soongsil University) (Korea Electric Power Corporation(KEPCO)) (Soongsil University)
저널정보
대한전기학회 전기학회논문지 전기학회논문지 제73권 제2호
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피인용 4

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    초록·키워드

    In 2022, KEPCO implemented grid support functions for PV systems to prevent blackouts from voltage and frequency fluctuations during system failures. This includes Low Voltage Ride Through (LVRT), which poses concerns about fault currents affecting grid protection systems like Recloser and OCGR. Prior studies on PV integration fault analysis were limited to MW capacities and didn"t cover malfunctions in grid support functions like LVRT. This paper analyzes grid flow with increasing PV capacity, using a PSCAD model of a smart inverter for simulating the LVRT function and conducting fault analysis. It focuses on the single line-to-ground fault (1LG), the most common in distribution systems, calculating fault current values, and recommends integration methods with existing protection systems by evaluating different capacity-based cases.

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