Research on Adjacent Line Interference on Cab Signaling in High-speed Railway Station Based on Multi-conductor Transmission Line Theory
With the wide use of ZPW-2000 series track circuits in high-speed railway section and station scenarios,the interference from adjacent lines in the station is more complicated.In order to prevent the malfunction of the on-board e-quipment of CTCS-2 and CTCS-3 caused by the interference of cab signaling adjacent lines in the high-speed railway sta-tion,,analysis on the interference of adjacent lines in the station is required.Based on the differential equation of multi-conductor transmission lines,this paper derived the impedance difference equation and the admittance difference equa-tion for multi-conductor transmission lines.Based on the differential equation of multi-conductor transmission line,the adjacent line interference model of track circuit including track section,transmitting equipment and receiving equipment was further established,and the correctness of the model was verified by comparing the field data and simulation data.Finally,through the calculation and simulation of the cab signaling adjacent line interference model,the influence of section parallel length,line spacing,line angle,track bed resistance and power amplifier voltage on the adjacent line in-terference value of cab signaling was studied.The results show that for co-directional carrier frequency interference,as the maximum value of cab signaling interference current gradually decreases with the increase of line spacing and line angle,the line spacing should not be less than 5 m during design,and reasonable setting of turnout sections can reduce interference.Given that the maximum value of cab signaling interference current increases as the amplifier voltage and bed resistance increase,a low amplifier voltage design and the maximum possible local bed resistance should be used.
high-speed railwaytrack circuitmulti-conductor transmission linescab signalingadjacent line interference
万方数据
维普
