Determination of the electrical parameters of railway traction lines: calculation, measurement, and reference data

A comprehensive analysis of published experimental data and formulae for the determination of the electrical parameters of railway traction lines is performed. Several results from different authors are presented with particular attention to different assumptions and environmental conditions. Additional measurements were performed over the 5 Hz-200 kHz frequency range on a line section purposely prepared at La Spezia Railway Station (Italian State Railways). Theoretical formulae are considered and their validity is checked against experimental data. There is general accordance within common variations of the most critical parameters; calculations and measurements agree over the entire frequency range and are very accurate in the frequency range 50 Hz-50 kHz, where significant conducted disturbance lies.

[1]  Marcello D'Amore,et al.  Simulation models of a dissipative transmission line above a lossy ground for a wide-frequency range. I. Single conductor configuration , 1996 .

[2]  Akirhiro Ametani,et al.  Approximate method for calculating the impedances of multiconductors with cross sections of arbitrary shapes , 1992 .

[3]  Antonio Orlandi,et al.  FDTD analysis of lossy, multiconductor transmission lines terminated in arbitrary loads , 1996 .

[4]  R. J. Hill,et al.  Electrical material data for railway track transmission line parameter studies , 1999 .

[5]  A. Mariscotti,et al.  Distribution of the Traction Return Current in AC and DC Electric Railway Systems , 2002, IEEE Power Engineering Review.

[6]  A. Tabbagh,et al.  DETERMINATION OF ELECTRICAL PROPERTIES OF THE GROUND AT SHALLOW DEPTH WITH AN ELECTROSTATIC QUADRUPOLE: FIELD TRIALS ON ARCHAEOLOGICAL SITES1 , 1993 .

[7]  B. Chambers,et al.  Multiconductor transmission lines , 1975 .

[8]  Akihiro Ametani,et al.  Wave Propagation Characteristics of Iron Conductors in an Intelligent Building , 1999 .

[9]  R. J. Hill,et al.  Railway track transmission line parameters from finite element field modelling: series impedance , 1999 .

[10]  Joe LoVetri,et al.  The finite-difference time-domain solution of lossy MTL networks with nonlinear junctions , 1995 .

[11]  R. J. Hill,et al.  Railway track transmission line parameters from finite element field modelling: shunt admittance , 2000 .

[12]  J. H. Scott,et al.  Dielectric constant and electrical conductivity measurements of moist rock: A new laboratory method , 1967 .

[13]  D. C. Carpenter,et al.  Determination of rail internal impedance for electric railway traction system simulation , 1991 .

[14]  Andrea Mariscotti,et al.  Measurement of the internal impedance of traction rails at 50 Hz , 2000, IEEE Trans. Instrum. Meas..

[15]  J. R. Carson.  Wave propagation in overhead wires with ground return , 1926 .

[16]  Hermann W. Dommel,et al.  Computation of Cable Impedances Based on Subdivision of Conductors , 1987, IEEE Transactions on Power Delivery.

[17]  Andrea Mariscotti,et al.  Reference curves of the pantograph impedance in DC railway systems , 2000, 2000 IEEE International Symposium on Circuits and Systems. Emerging Technologies for the 21st Century. Proceedings (IEEE Cat No.00CH36353).