Přístupnostní navigace
E-application
Search Search Close
Publication detail
TOPOLÁNEK, D. LEHTONEN, M. TOMAN, P. ORSÁGOVÁ, J. DRÁPELA, J.
Original Title
An earth fault location method based on negative sequence voltage changes at low voltage side of distribution transformers
Type
journal article in Web of Science
Language
English
Original Abstract
The paper presents a new approach for earth fault localization which is based on evaluation of phase to ground voltages recorded by voltage monitors installed at low-voltage side of distribution transformer station deployed under smart metering projects. The introduced method "Vdip" determines the probability of asymmetrical fault location based on comparison of the changes in negative sequence current recorded at the feeding medium voltage substation and changes in negative sequence voltages recorded at the LV sides of distribution transformers. The paper describes the nature of the method and presents its principle using simulation of a MV resonant earthed distribution network where short-term connection of an auxiliary resistor is used. The method was also evaluated in real resonant earthed 22 kV network, where totally 15 earth faults with fault resistance up to 1.2 k Omega were carried out. As the result of this field test, the location error of the Vdip method is presented.
Keywords
Earth fault; Fault localization; Voltage monitor; Distribution network; Negative sequence voltage; Distribution transformer; Voltage dip
Authors
TOPOLÁNEK, D.; LEHTONEN, M.; TOMAN, P.; ORSÁGOVÁ, J.; DRÁPELA, J.
Released
1. 6. 2020
Publisher
ELSEVIER SCI LTD
Location
OXFORD
ISBN
0142-0615
Periodical
INTERNATIONAL JOURNAL OF ELECTRICAL POWER & ENERGY SYSTEMS
Year of study
118
Number
State
United Kingdom of Great Britain and Northern Ireland
Pages from
1
Pages to
8
Pages count
URL
https://www.sciencedirect.com/science/article/pii/S014206151932068X?dgcid=author
BibTex
@article{BUT161008, author="David {Topolánek} and Matti {Lehtonen} and Petr {Toman} and Jaroslava {Orságová} and Jiří {Drápela}", title="An earth fault location method based on negative sequence voltage changes at low voltage side of distribution transformers", journal="INTERNATIONAL JOURNAL OF ELECTRICAL POWER & ENERGY SYSTEMS", year="2020", volume="118", number="118", pages="1--8", doi="10.1016/j.ijepes.2019.105768", issn="0142-0615", url="https://www.sciencedirect.com/science/article/pii/S014206151932068X?dgcid=author" }