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Simulation of current distribution through elements of the overhead contact line

Kuznetsov Valeriy, Rojek Artur, Hubskyi Petro, Skrzyniarz Marek, Stypułkowski Piotr, Szulc Waldemar

Journal of KONBiN

2022

Vol. 52, iss. 4

197--206

The compilation of unfavourable weather conditions, such as negative temperature and high humidity, leads to the formation of an ice layer and deposits on the elements of the overhead contact line, which leads to its degradation and prevents the supply of electricity to the traction vehicle. The traction line is located on a very large area and it is extremely difficult to effectively remove the remaining layers of ice. During planning the anti-icing measures it’s very important to know the current distribution in wires. The authors of the article analysed the catenaries operated in Poland and in EU in terms of the current distributions in contact and catenary wires in through spans. The approach presented in this paper allows to take into account the wear of the contact wires during calculations of the current distributions.

Szereg niekorzystnych warunków atmosferycznych, takich jak ujemna temperatura i wysoka wilgotność, powoduje powstanie warstwy lodu i osadów na elementach sieci trakcyjnej, co prowadzi do jej degradacji i uniemożliwia dostarczanie energii elektrycznej do pojazdu trakcyjnego. Sieci trakcyjne znajdują się na rozległych obszarach i niezwykle trudno jest skutecznie usunąć warstwę lodu. Podczas planowania czynności mających na celu odlodzenie sieci jezdnych bardzo ważna jest znajomość rozpływu prądu w przewodach. Autorzy artykułu przeanalizowali sieci trakcyjne eksploatowane w Polsce i w UE pod kątem rozpływu prądów w przewodach jezdnych i linach nośnych w całym przęśle naprężenia. Przedstawione w niniejszej pracy podejście pozwala na uwzględnienie zużycia przewodów jezdnych podczas obliczeń rozpływu prądów.

Regina computer system for intelligent monitoring, diagnostics, and management of railway power supply systems

Sopel Mykhailo, Stasyuk Oleksandr, Kuznetsov Valeriy, Goncharova Lidiya, Hubskyi Petro

Diagnostyka

2021

Vol. 22, No. 4

77--88

The analysis of the problem of innovative transformation of power supply networks of railways made it possible to scientifically substantiate the direction of research related to an optimal strategy for computer monitoring and intellectualization of the processes of power supply of traction substations of railways. Conceptual approaches to the formation of a new model of intellectualization of power supply networks have been developed. Differential models of high organization of synchronous vector measurements are proposed, allowing to determine the comprehensive information content of the primary data. Based on the concept of smart energy, a set of differential models and methods of harmonic and correlation analysis of anomalous and transient processes occurring in power systems has been developed. The REGINA computer system has been designed and manufactured to carry out, in real-time, intelligent monitoring, diagnostics, identification of accidents, optimization of power consumption and expanding the range of market services in managing railway power supply networks. The REGINA system complies with the requirements of ISO 9001: 2015 and the German certification body DOS. Many actual results obtained during the operation of the REGINA on the railways are presented.