Analysis on Harmonic Current of Electrified Railway Traction Network Based on Multi-port Reduced-order Model

摘要

In order to analyze the amplification phenomenon of harmonic currents by the traction network in an electric railway,this paper established a simplified model for traction network using T-type distributed model.Further more the conductors of the traction network were represented by a delicate multi-port model which has been reduced in ends.This model is an improvement for analyzing conductor complex compared with two-port network model.The simulation results of the resonance frequency and the amplification of harmonic currents was given by EMTP-ATP,which verified that the proposed model was an accurate and effective way for analyzing the harmonics in traction network.