37. саветовање CIGRE Србија (2025) СИГУРНОСТ, СТАБИЛНОСТ, ПОУЗДАНОСТ И RESILIENCE ЕЛЕКТРОЕНЕРГЕТСКОГ СИСТЕМА МУЛТИСЕКТОРСКО ПОВЕЗИВАЊЕ У ЕНЕРГЕТИЦИ И ПРИВРЕДИ – C4-02
АУТОР(И) / AUTHOR(S): Nada Tošić, Tomislav Rajić, Milan Savić, Mileta Žarković
DOI: 10.46793/CIGRE37.C4.02
САЖЕТАК / ABSTRACT:
This paper explains in more detail the implementation of overvoltage protection for the power supply of the tunnel on the „Miloš Veliki“ highway. The consequences of atmospheric discharge into the 10/0.4 kV transformer station, which is outside the tunnel, in the open air, were analyzed, that is, possible overvoltages that then occur at the installation of the transformer station. The influence of the complexity of the scheme on the result of the simulation was analyzed, which is significant for the selection of devices for protection against overvoltage. Two ways of modeling are commented and it is commented which one is more appropriate and more accurate. A sensitivity analysis was performed on how the lengths of the connections and the number of distribution cabinets affect the height of the overvoltage. The number of cables and their length have been changed. The conclusion of the work should indicate whether the application of overvoltage protection in all distribution cabinets is required or not.
КЉУЧНЕ РЕЧИ / KEYWORDS:
tunnel protection, lightning overvoltage, modeling
ПРОЈЕКАТ / ACKNOWLEDGEMENT:
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