Single-phase 25 kV traction networks of electrified alternating current (AC) railways create electromagnetic fields (EMFs) with significant levels of intensity. The most intense magnetic fields occur when short circuits exist between the contact wire and rails or ground. Despite the short duration of exposure

they can adversely affect electronic devices and induce significant voltages in adjacent power lines

which is dangerous for operating personnel. Although numerous investigations have focused on modeling the EMF of traction networks and power lines

the challenge of determining the three-dimensional electromagnetic fields near metal supports during the flow of a short-circuit current through them is yet to be resolved. In this case

the field has a complex spatial structure that significantly complicates the calculations of intensities. This study proposes a methodology

algorithms

software

and digital models for determining the EMF in the described emergency scenarios. During the modeling process

the objects being studied were represented by segments of thin wires to analyze the distribution of the electric charge and calculate the intensities of the electric and magnetic fields. This approach was implemented in the Fazonord software

and the modeling results show a substantial increase in EMF levels close to the support

with a noticeable decrease in the levels as the distance from it increases. The procedure implemented in the commercial software Fazonord is universal and can be used to determine electromagnetic fields at any electrical power facility that includes live parts of limited length. Based on the proposed procedure

the EMF near the supports of overhead power lines and traction networks of various designs could be determined

the EMF levels at substations can be calculated

and the influence of metal structures located near traction networks

such as pedestrian crossings at railway stations

can be considered.