Rail track as a lossy transmission line Part II: New method of measurements — simulation and in situ measurements

Adam Szeląg

Institute of Electrical Machines, Warsaw University of Technology

Manuscript received 2000.04.07 , revised version 2000.11.09

The transmission line representation of a two rail track is used in the paper for purposes of prepa­ration the measurements of their parameters. The previous paper by the author has presented the new method of simultaneous measurements of frequency-dependent electrical parameters of the track, which could be applied for in situ measurements. To check the validity of the method and to choose the optimal conditions for measurements the method of simulation was used. Results of exemplary mea­surements undertaken on different tracks are as well enclosed.


The method of simultaneous measurements X, Y parameters of the 2-rail track pre­sented in [17] is correct from a mathematical point of view. But in order to check its validity a set of ‘simulation’ measurements are to be carried out. The simulation trans­mission model of a 3-conductor 2-rail track in the presence of ground have been com­posed as described in [17]. The application of simulation for preparation of the measure­ments and in situ measurements using the derived model are presented in this paper.

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