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논문 기본 정보

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(Korea Electrical Safety Corporation) (Korea Electrical Safety Corporation) (Korea Electrical Safety Corporation) (Korea Electrical Safety Corporation)
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대한전기학회 전기학회논문지 전기학회논문지 제73권 제11호
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    초록·키워드

    In low-voltage DC systems, the grounding system is mainly a two-wire or three-wire IT system. Among them, the IT high-resistance midpoint grounding system has advantages in detecting 1-wire ground fault, but has disadvantages in continuous loss and insulation resistance measurement. This paper proposes a method to estimate the insulation resistance of the + and - lines using the measured voltage when the switch of the high-resistance midpoint is closed/opened in the open-type midpoint grounding system. Through the proposed method, it prevents continuous losses due to high-resistance midpoint grounding and allows the insulation resistance to be estimated through switch control when the measured voltage exceeds a certain value. The proposed method was verified by simulation using MATALB/SIMULINK and experiment.

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      UCI(KEPA) : I410-151-25-02-091081970