Application of XLPE Cables in Electric Networks Supplying DC Traction Loads

Andrey Kryukov, Andrey Kryukov, Konstantin Suslov, Konstantin Suslov, Aleksandr Cherepanov, Quoc Hieu Nguyen, Ilya Shushpanov

2025

Abstract

The connection of railway traction substations (TS) to high-voltage networks of electric power systems relies on overhead power transmission lines. This approach has several downsides: considerable width of the protection zone; potential for damage during strong winds, and the accumulation of ice and frost deposits. Additionally, there is a risk of injury to both people and animals caused by step voltages resulting from wire breakage. The noted negative consequences can be forgotten when using 110 kV cable lines (CL) with cross-linked polyethylene (XLPE) insulation for connecting traction substations. The study presented in this paper aims to develop digital models for determining power flows in direct current traction power supply systems (DC TPSS) with power supply to converter substations via cable line. Multiphase modeling methods are used alongside the Fazonord software product, specifically version 5.3.5.0–2024. The obtained results allow us to draw the following conclusions: the use of cable lines leads to an increase in the minimum three-minute voltages of 2 to 3.5%, while active power losses in the main power transmission line decrease by 8 to 14%. DC traction substations do not create some noticeable levels of unbalance in the adjacent networks. However, any unbalance in a three-phase system has a negative effect on power consumers, especially on widely used induction electric motors. The use of XLPE cables allows reducing unbalance factors by 11-22 times. In the presence of overhead lines (OL), the levels of harmonic distortions on the 110 kV buses of traction substation (TS) 2 and TS 3 exceed the normally permissible values. Replacing the overhead lines with cable lines makes it possible to reduce the indicators by approximately 60%. The factors of certain harmonics are reduced by 37...100%. The developed digital models can be used to design and operate DC TPSS. The method for power flow determination is universal and can be used to make calculations for external power supply systems of any configuration and traction networks of various designs.

Paper Citation

in Harvard Style

Kryukov A., Suslov K., Cherepanov A., Nguyen Q. and Shushpanov I. (2025). Application of XLPE Cables in Electric Networks Supplying DC Traction Loads. In Proceedings of the 14th International Conference on Smart Cities and Green ICT Systems - Volume 1: SMARTGREENS; ISBN 978-989-758-751-1, SciTePress, pages 106-113. DOI: 10.5220/0013285700003953

in Bibtex Style

@conference{smartgreens25,
author={Andrey Kryukov and Konstantin Suslov and Aleksandr Cherepanov and Quoc Nguyen and Ilya Shushpanov},
title={Application of XLPE Cables in Electric Networks Supplying DC Traction Loads},
booktitle={Proceedings of the 14th International Conference on Smart Cities and Green ICT Systems - Volume 1: SMARTGREENS},
year={2025},
pages={106-113},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0013285700003953},
isbn={978-989-758-751-1},
}

in EndNote Style

TY - CONF

JO - Proceedings of the 14th International Conference on Smart Cities and Green ICT Systems - Volume 1: SMARTGREENS
TI - Application of XLPE Cables in Electric Networks Supplying DC Traction Loads
SN - 978-989-758-751-1
AU - Kryukov A.
AU - Suslov K.
AU - Cherepanov A.
AU - Nguyen Q.
AU - Shushpanov I.
PY - 2025
SP - 106
EP - 113
DO - 10.5220/0013285700003953
PB - SciTePress