37. саветовање CIGRE Србија (2025) СИГУРНОСТ, СТАБИЛНОСТ, ПОУЗДАНОСТ И RESILIENCE ЕЛЕКТРОЕНЕРГЕТСКОГ СИСТЕМА МУЛТИСЕКТОРСКО ПОВЕЗИВАЊЕ У ЕНЕРГЕТИЦИ И ПРИВРЕДИ – B3.03
АУТОР(И) / AUTHOR(S): Sonja Stokić, Asen Radovanov, Željko Stojanović, Marko Marković, Aleksandar Ljujić, Slobodan Paunović
DOI: 10.46793/CIGRE37.B3.03
САЖЕТАК / ABSTRACT:
This paper presents a new technical solution for auxiliary power supply redundancy in an electrical power facility (EPF) using voltage power transformers. Until 2020, voltage power transformers were not installed in EMS facilities, although their use has been increasingly common worldwide. These transformers, in addition to having windings for measurement, include a dedicated winding for supplying the auxiliary systems of the EPF. They combine a high-voltage inductive voltage transformer on the primary side with a power transformer on the secondary side. The new solution was implemented at the 220/110 kV Belgrade 3 substation, where 3×100 kVA voltage power transformers were installed and connected to the 110 kV busbars. The aim of this paper is to present the experience gained during the operation of voltage power transformers in the specified electrical power facility.
КЉУЧНЕ РЕЧИ / KEYWORDS:
power supply, auxiliary power, voltage power transformers
ПРОЈЕКАТ / ACKNOWLEDGEMENT:
ЛИТЕРАТУРА / REFERENCES:
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- IEC 63253-5713-8 Station service voltage transformers (SSVT)
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