Version 1
: Received: 6 June 2023 / Approved: 6 June 2023 / Online: 6 June 2023 (07:54:39 CEST)
How to cite:
Suslov, K.; Kryukov, A.; Voronina, E.; Akhmetshin, A. Modeling the Electromagnetic Fields of 25 kV Traction Networks Under Emergency Conditions. Preprints2023, 2023060400. https://doi.org/10.20944/preprints202306.0400.v1
Suslov, K.; Kryukov, A.; Voronina, E.; Akhmetshin, A. Modeling the Electromagnetic Fields of 25 kV Traction Networks Under Emergency Conditions. Preprints 2023, 2023060400. https://doi.org/10.20944/preprints202306.0400.v1
Suslov, K.; Kryukov, A.; Voronina, E.; Akhmetshin, A. Modeling the Electromagnetic Fields of 25 kV Traction Networks Under Emergency Conditions. Preprints2023, 2023060400. https://doi.org/10.20944/preprints202306.0400.v1
APA Style
Suslov, K., Kryukov, A., Voronina, E., & Akhmetshin, A. (2023). Modeling the Electromagnetic Fields of 25 kV Traction Networks Under Emergency Conditions. Preprints. https://doi.org/10.20944/preprints202306.0400.v1
Chicago/Turabian Style
Suslov, K., Ekaterina Voronina and Azat Akhmetshin. 2023 "Modeling the Electromagnetic Fields of 25 kV Traction Networks Under Emergency Conditions" Preprints. https://doi.org/10.20944/preprints202306.0400.v1
Abstract
When in operation, the 25 kV traction networks may encounter the contact wire short circuits to rails or ground. The short-circuit conditions cause high-intensity magnetic fields (EMFs), which, despite the short duration of exposure, can negatively affect electronic devices and lead to significant induced voltage on adjacent power lines. There can be two main types of emergency conditions in 25 kV traction networks: the contact wire short circuit to the rail, when the supports are grounded to the rail track; and the contact wire short circuit to the ground in sections with supports disconnected from the rails. A three-dimensional electromagnetic field near a metal support when a short-circuit current flows through it is characterized by a complex spatial structure, which significantly complicates the calculations of intensities. The paper discusses the results of computer modeling aimed at determining the EMF intensity in the described emergencies. The objects involved in modeling were represented by segments of thin wires to calculate the electric charge distribution and find out the EMF intensity. This approach is implemented in the Fazonord software. The modeling results have shown that EMF intensities near the support grow significantly; their levels decrease noticeably as one moves away from the support; and that the three-dimensional electromagnetic field under the considered emergency conditions has a complex spatial structure.
Keywords
power supply systems for AC railways; emergency conditions; electromagnetic fields near supports; modeling; electromagnetic safety
Subject
Engineering, Electrical and Electronic Engineering
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
