Russian Federation
Russian Federation
Russian Federation
Purpose: This paper aims to create an efficient system for protecting the overhead contact system of urban land electric transport from low short-circuit currents, which primarily occur at track intersections and from violations of rolling stock operation protocols. Despite existing protection measures, such incidents frequently result in severe consequences, including the total collapse of network segments and disruptions to passenger services. Methods: An analysis of existing feeder protection systems, identification of shortcomings within the existing protection framework, and the development of a new algorithm to detect low-power short circuits. Results: The obtained preliminary findings from experimental operations indicate the prospects for further research into low short-circuit currents. The introduction of rapid alarm registration systems facilitates the effective detection and elimination of threats associated with low short-circuit currents. Further tests are planned for the coming years, with the ultimate goal of fully automating the detection and prevention of emergency situations in the contact network associated with low short-circuit currents. Practical significance: The practical significance of this research lies in its potential to significantly boost the reliability of power supply for urban transportation networks, reduce unexpected downtime of public transport, and minimize passenger safety risks. The results of the study have the potential for widespread adoption in the operational practices of urban electric transport enterprises. This would ensure uninterrupted operation of infrastructure and enhance the overall quality of public services.
Urban electric transport, overhead contact network protection, short circuit, energy recuperation, monitoring
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