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Electronic Devices

Study of Single-Line Ground Fault in Ungrounded Electrical System

Milica RaÃ…Â¡ic, Milan Radic and Zoran Stajic
Faculty of Electronic Engineering University of NiÃ…Â¡, Aleksandra Medvedeva 14 18000 NiÃ…Â¡, Serbia

Abstract: We studied the single-line ground fault in ungrounded electrical systems in this paper. We have presented the single-lines to ground capacitances in the ungrounded system. We use the correct model of ungrounded network and mathematical models of voltage phases. We have also performed the testing using the assumptions of practice cases and finally implemented the results with models.

Keywords: Ground Fault, Ungrounded Power System, Mathematical Model, Line and Phase Voltages, Capacitive Currents Study of Single-Line Ground Fault in Ungrounded Electrical System

DOI:https://doi.org/10.6025/ed/2022/11/1/9-16

Full_Text PDF 1.23 MB Download: 34 times

References:

[1] Stojanovic, D. P. (2008). Prenos elektricne energije, Elektronski fakultet, Niš. (in Serbian)
[2] Rajakovic, N., Tasic, D. S. (2008). Distributivne iindustrijske mreÃ…Â¾e, Akademska misao, Beograd,. (in Serbian)
[3] Nahman, J. (1980). Uzemljenje neutralne ta ke distributivnih mreÃ…Â¾a, Nau na knjiga, Beograd. (in Serbian)
[4] Fischer, N., Hou, D. (2006). Methods for detecting ground faults in medium-voltage distribution power systems”, White paper, Schweitzer Engineering Laboratories, Inc., Pullman WA USA.
[5] Brown, B. Section 6: System grounding, Square D Engineering Services.
[6] Tehnicka preporuka Br .6, Uzemljenje neutralnih ta aka u elektrodistributivnim mreÃ…Â¾ama 110 kV, 35 kV, 20 kV, 10 kV i 0.4 kV, V izdanje, JP EPS – Direkcija za distribuciju elektri ne energije, Mart 2004. (in Serbian).

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