Publication detail

Earth fault location based on evaluation of voltage sag at secondary side of medium voltage/low voltage transformers

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

9

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"
}