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Three Phase Transformer Grounding Influence Analysis on Inrush Current


Špoljarić, Željko; Jerković Štil, Vedrana; Hederić, Željko
Three Phase Transformer Grounding Influence Analysis on Inrush Current // DIGEST BOOK OF THE SEVENTH SYMPOSIUM ON APPLIED ELECTROMAGNETICS SAEM'18 / Seme, Sebastijan ; Hadžiselimović, Miralem ; Štumberger, Bojan (ur.).
Maribor: University of Maribor Press, 2018. str. 25-26 doi:10.18690/978-961-286-171-1 (predavanje, podatak o recenziji nije dostupan, prosireni, znanstveni)


Naslov
Three Phase Transformer Grounding Influence Analysis on Inrush Current
(Three phase transformer grounding influence analysis on inrush current)

Autori
Špoljarić, Željko ; Jerković Štil, Vedrana ; Hederić, Željko

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, prosireni, znanstveni

Izvornik
DIGEST BOOK OF THE SEVENTH SYMPOSIUM ON APPLIED ELECTROMAGNETICS SAEM'18 / Seme, Sebastijan ; Hadžiselimović, Miralem ; Štumberger, Bojan - Maribor : University of Maribor Press, 2018, 25-26

ISBN
978-961-286-171-1

Skup
7th SYMPOSIUM ON APPLIED ELECTROMAGNETICS SAEM’18

Mjesto i datum
Podčetrtek, Slovenija, 17-20.06.2018.

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Podatak o recenziji nije dostupan

Ključne riječi
Three Phase Transformer ; Inrush Current ; Grounding Influence
(Three phase transformer ; inrush current ; grounding influence)

Sažetak
The main object of research is analysis of grounding influence of three phase transformer on inrush current which occurs during switching of unloaded transformer on to electric grid. Inrush current analysis covers the area of transition behaviour of power transformers. For this purpose, a simulation model shown in Fig. 1 is developed [1]. The model can be used for determination of inrush current amplitude, time of duration and Fourier higher harmonics analysis of power transformers with different voltage level, power and connection. The main idea of model possibilities is given in [2]. Basics inrush current analysis, calculation and measurement is given in [3, 4]. Problems which inrush current can cause is given in [5]. As mentioned, type of transformer grounding can have influence on inrush current amplitude, duration, higher harmonic content and THD factor (Total Harmonic Disorder). Results of analysis on example of one power transformer (250 kVA, 20/0, 42 kV, Yz5) for cases of direct grounding, grounding through various resistances and isolated grounding will be shown.

Izvorni jezik
Engleski

Znanstvena područja
Elektrotehnika



POVEZANOST RADA


Ustanove
Fakultet elektrotehnike, računarstva i informacijskih tehnologija Osijek

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