TIME-FREQUENCY METHOD OF DETECTION OF RETURN TRACTION CURRENTS ON TRACK CIRCUIT IN ELECTROTRACTIVE SYSTEM OF SERBIAN RAILWAYS

Branislav Gavrilovic; Zoran Bundalo; Ivana Cirovic

Scientific paper ID 1830 : 2019/3

TIME-FREQUENCY METHOD OF DETECTION OF RETURN TRACTION CURRENTS ON TRACK CIRCUIT IN ELECTROTRACTIVE SYSTEM OF SERBIAN RAILWAYS

Branislav Gavrilovic, Zoran Bundalo, Ivana Cirovic

The results of perennial explorations impact of return traction current on track circuit in electro-tractive system of Serbian Railways has accomplished the new method of detection which enable the safely define of impact of traction current on track circuit. A new method of detection of electromagnetic compatibility traction current and track circuit applied of signaling devices of railways electro-tractive systems using the Short Time Fourier Transformation (STFT) is presented. This particular kind of signal analysis makes the determination of changes of the spectral power density of a signal in function of possible time. In this paper the results of joint time-frequency analysis of the potential of track circuit in the field of return traction currents stray generated by tram-line are presented. Presented results unambiguously show the possibility of accurate identification of source of return traction currents and its interference on the underground metal construction.

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обратни тягови токове релсова верига метод детектиранеReturn traction currents track circuit method detectionBranislav Gavrilovic Zoran Bundalo Ivana Cirovic

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