Investigation of Fault Current and Impedance according to Autotransformer Tap Changing

교류급전시스템의 단권변압기 탭변환에 따른 고장전류 및 고장임피던스 검토

This paper presents new configuration of a.c. traction power supply system. The proposed system includes autotransformer with variable tab. The voltage drop in traction power supply system can be reduced due to tap change of autotransformer. In this paper, fault current and Impedance is investigated, when fault occurs in traction power supply system.