혼합송전계통에서 뇌과전압해석 및 피뢰기 동작특성 검토

Analysis of Lightning Overvoltage on the Combined Power Transmission Line and Actuation of Arrester

This paper describes the effect of lightning current on combination transmission line. In the paper, an lightning current which can generate 2/80[${\mu}s$]. 20[kA] - 40[kA] waveform is modeled in ATPDraw. The lightning current invaded to the overhead power transmission line propagates to the underground power cable. The simulation was performed to analyze the effect of arrester location and overvoltage occurred in power cable.