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고장조건에 따른 지중송배전계통에서 공통접지의 영향 분석
임광식(Kwang-Sik Lim),이종범(Jong-Beom Lee) 대한전기학회 2007 대한전기학회 학술대회 논문집 Vol.2007 No.11
This paper describes that the effect on the other system is generated by the single line to ground fault of the underground transmission systems and distribution systems established the common ground in trefoil. Each system is modeled by EMTP/ATPDraw and the system carry out simulations according to the various values of common ground to analyse. In this study, the result of analysis based on simulation suggests protection method and ground system of each system.
林廣植(Kwang-Sik Lim),李鍾範(Jong-Beom Lee) 대한전기학회 2008 전기학회논문지 Vol.57 No.2
This paper describes the effect of transient state in underground transmission and distribution lines installed together in the same tunnel. Two systems installed in the same tunnel are operated by the common grounding. This paper analyzed that how much one of the two kinds of systems influences the other systems during the transient state by EMTP/ATPDraw. Single line-to-ground fault and lightning surge were selected in transient state condition. These cases were simulated variously according to the variation of common grounding magnitude, fault location and lightning surge magnitude. It is evaluated that the analyzed results will be used for establishment and operating materials of common grounding in the same tunnel.
지중배전계통에서 뇌서지특성 해석 (pp.587-588)
임광식(Kwang-Sik Lim),이종범(Jong-Beom Lee) 대한전기학회 2006 대한전기학회 학술대회 논문집 Vol.2006 No.7
This paper aims to analyze the overvoltage in underground distribution systems when lightning surge strikes to overhead line. The model is established by EMTP/ATPDraw for actual distribution systems. Simulation is carried out considering variation of parameters such as length and lightning current.