Detail publikace

An earth fault location method based on negative sequence voltage changes at low voltage side of distribution transformers

TOPOLÁNEK, D. LEHTONEN, M. TOMAN, P. ORSÁGOVÁ, J. DRÁPELA, J.

Originální název

An earth fault location method based on negative sequence voltage changes at low voltage side of distribution transformers

Typ

článek v časopise ve Web of Science, Jimp

Jazyk

angličtina

Originální abstrakt

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.

Klíčová slova

Earth fault; Fault localization; Voltage monitor; Distribution network; Negative sequence voltage; Distribution transformer; Voltage dip

Autoři

TOPOLÁNEK, D.; LEHTONEN, M.; TOMAN, P.; ORSÁGOVÁ, J.; DRÁPELA, J.

Vydáno

1. 6. 2020

Nakladatel

ELSEVIER SCI LTD

Místo

OXFORD

ISSN

0142-0615

Periodikum

INTERNATIONAL JOURNAL OF ELECTRICAL POWER & ENERGY SYSTEMS

Ročník

118

Číslo

118

Stát

Spojené království Velké Británie a Severního Irska

Strany od

1

Strany do

8

Strany počet

8

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"
}