Harmonics Analysis in eletric railroad feed system

전철 급전계통의 고조파 실측 및 해석결과 비교검증

This paper compares the measurement values of harmonics to the analysis results in railroads testing system. Therefore, in this paper, new program to calculate THD(Total Harmonic Distortion) and measuring system of harmonics are developed. The harmonic measurement point is PCC(Point of Common Coupling), the primary side(154kV) of scott transformer, and the analysis is performed based on real KEPCO system data. As a result of this study, it is possible to present basic data and informations about harmonic problems which can be occurred in the future commercial railroad systems.