The range of load variability of rectifier units with a concentrated disposition of tram substations as exemplified by a real tram line

The first part of this paper presents a comparison of the measured and simulated results of the load variability of rectifier units of a tram traction substation. The subject of the tests was a power supply substation for the contact line of a tramway, the profile and traffic of which was known. After a positive appraisal of the applied simulation method, an assessment of the range of load variability for the rectifier units took place for a hypothetical situation involving the concentrated disposition (layout) of the traction substations (so-called micro-substations). The results acquired under the described circumstances are presented in the second part of this paper.