Title:	Four-leg transformer with defined zero sequence impedance for ground fault compensation
Authors:	Rezaei, Mohsen Talla, Jakub Komrska, Tomáš Peroutka, Zdeněk
Citation:	REZAEI, M. TALLA, J. KOMRSKA, T. PEROUTKA, Z. Four-leg transformer with defined zero sequence impedance for ground fault compensation. In International Conference on Applied Electronics (AE 2021) : /proceedings/. Pilsen: University of West Bohemia, 2021. s. 157-163. ISBN: 978-80-261-0972-3 , ISSN: 1803-7232
Issue Date:	2021
Publisher:	University of West Bohemia
Document type:	konferenční příspěvek ConferenceObject
URI:	2-s2.0-85116419417 http://hdl.handle.net/11025/46753
ISBN:	978-80-261-0972-3
ISSN:	1803-7232
Keywords in different language:	single earth fault;distribution grid;petersen coil;zero sequence current;transformer
Abstract in different language:	Single-phase ground faults are the most common faults in medium-voltage distribution grids. High-impedance grid grounding using a special four-leg transformer is discussed in the paper. The transformer’s zero-sequence impedance differs from positive-sequence impedance and it is designed to compensate the earth faults currents in Medium Voltage (MV) distribution grids when single-phase ground fault occurs. The designed transformer can replace the traditional arc suppression coils (ASC) in the case where no distribution transformer neutral is available or distributed compensation is required. Alternatively, the transformer can operate in parallel with the ASC.
Rights:	© University of West Bohemia
Appears in Collections:	Konferenční příspěvky / Conference papers (RICE) Konferenční příspěvky / Conference Papers (KEV) OBD

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