Calculation of operating currents in fiber-optic cables for a traction networks with a combined shielding conductor
https://doi.org/10.46973/0201-727X_2025_4_214
Abstract
This paper describes the development of calculation relationships for determining the current in the metal sheath of a fiber-optic cable, which is a part of a traction network with a combined shielding conductor. The return current circuit of an electrified railway is considered as a line with distributed parameters. When determining the total current in the cable's metal sheath, in addition to the current branching from the track into the fiber-optic cable sheath, currents generated by the mutual inductive coupling of the metal sheath with the overhead contact system and the track are also taken into account. The obtained analytical relationships are necessary for determining the thermal stability of fiber-optic cables against long-term operating currents when used in AC traction networks.
About the Author
V. A. Osipov
Rostov State Transport University (RSTU)
Russian Federation
Russian Federation
Osipov Vladimir Alexandrovich, Chair “Theoretical Foundations of Electrical Engineering”, Candidate of Engineering Sciences, Associate Professor, Dean, Head of the Chair
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Review
For citations:
Osipov V.A. Calculation of operating currents in fiber-optic cables for a traction networks with a combined shielding conductor. Vestnik Rostovskogo Gosudarstvennogo Universiteta Putej Soobshcheniya. 2025;(4):214-222. (In Russ.) https://doi.org/10.46973/0201-727X_2025_4_214
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