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

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26220%2F20%3APU134651" target="_blank" >RIV/00216305:26220/20:PU134651 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S014206151932068X?dgcid=author" target="_blank" >https://www.sciencedirect.com/science/article/pii/S014206151932068X?dgcid=author</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.ijepes.2019.105768" target="_blank" >10.1016/j.ijepes.2019.105768</a>

Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

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

Popis výsledku anglicky

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.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20201 - Electrical and electronic engineering

Projekt

—

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2020

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

INTERNATIONAL JOURNAL OF ELECTRICAL POWER & ENERGY SYSTEMS

ISSN

0142-0615

e-ISSN

1879-3517

Svazek periodika

118

Číslo periodika v rámci svazku

118

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

8

Strana od-do

1-8

Kód UT WoS článku

000518691600020

EID výsledku v databázi Scopus

2-s2.0-85076829505