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TOPOLÁNEK, D. LEHTONEN, M. ADZMAN, M. TOMAN, P.
Original Title
Earth fault location based on evaluation of voltage sag at secondary side of medium voltage/low voltage transformers
Type
journal article in Web of Science
Language
English
Original Abstract
The main reasons for installation of power quality meters in distribution transformer substations are power quality monitoring and global evolution of electrical network towards the smart grid. In case that all measurements from the meters are properly synchronised and centralised, new possibilities of control or evaluation of the network are enabled. This contribution proposes the possibility for an earth fault localisation with the aid of synchronised data recorded on the low-voltage side of the medium voltage/low voltage transformers in compensated neutral distribution networks which are equipped with auxiliary resistor for short-time increasing of the active part of the fault current. The described method uses voltage sags evoked by connecting of the auxiliary resistor for locating the faulty section. The proposed method is tested with the help of numerical model which presents a part of the distribution network.
Keywords
earth fault, localization, compenzation, distribution network, voltage drop, distribution transformer
Authors
TOPOLÁNEK, D.; LEHTONEN, M.; ADZMAN, M.; TOMAN, P.
RIV year
2015
Released
7. 8. 2015
Publisher
IET
ISBN
1751-8687
Periodical
IET GENER TRANSM DIS
Year of study
9
Number
14
State
United Kingdom of Great Britain and Northern Ireland
Pages from
2069
Pages to
2077
Pages count
URL
http://ietdl.org/t/CNR93
Full text in the Digital Library
http://hdl.handle.net/11012/203248
BibTex
@article{BUT115451, author="David {Topolánek} and Matti {Lehtonen} and Mohd Rafi {Adzman} and Petr {Toman}", title="Earth fault location based on evaluation of voltage sag at secondary side of medium voltage/low voltage transformers", journal="IET GENER TRANSM DIS", year="2015", volume="9", number="14", pages="2069--2077", doi="10.1049/iet-gtd.2014.0460", issn="1751-8687", url="http://ietdl.org/t/CNR93" }