The Evaluation of Overvoltage During Short-Time Additional Earthing of Healthy Phase for Fault Location in MV Networks

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26220%2F14%3APU108900" target="_blank" >RIV/00216305:26220/14:PU108900 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1049/cp.2014.0160" target="_blank" >http://dx.doi.org/10.1049/cp.2014.0160</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1049/cp.2014.0160" target="_blank" >10.1049/cp.2014.0160</a>

Jazyk výsledku

angličtina

Název v původním jazyce

The Evaluation of Overvoltage During Short-Time Additional Earthing of Healthy Phase for Fault Location in MV Networks

Popis výsledku v původním jazyce

The paper is focused on the operational experience with an automatic system for additional earthing of the faulty or healthy phase during an earth fault. The system is primarily used for limiting of a fault current in the point of the fault by earthing of the faulty phase during an earth fault. The equipment for additional earthing of faulty phase can also be used for short-time connection of healthy phase to earth fault location. There are fast circuit breakers for additional earthing in the substation and the cycle close-open is shorter then time for tripping of overcurrent protection in the outgoing feeder-bay (100 ms). This method of fault location in MV network could bring additional overvoltage which stresses the insulation of MV networks elements. This paper presents the simulation and experimental verification of this phenomenon and gives the recommendation for choosing the healthy phase for minimizing the negative influence of this location technique.

Název v anglickém jazyce

The Evaluation of Overvoltage During Short-Time Additional Earthing of Healthy Phase for Fault Location in MV Networks

Popis výsledku anglicky

The paper is focused on the operational experience with an automatic system for additional earthing of the faulty or healthy phase during an earth fault. The system is primarily used for limiting of a fault current in the point of the fault by earthing of the faulty phase during an earth fault. The equipment for additional earthing of faulty phase can also be used for short-time connection of healthy phase to earth fault location. There are fast circuit breakers for additional earthing in the substation and the cycle close-open is shorter then time for tripping of overcurrent protection in the outgoing feeder-bay (100 ms). This method of fault location in MV network could bring additional overvoltage which stresses the insulation of MV networks elements. This paper presents the simulation and experimental verification of this phenomenon and gives the recommendation for choosing the healthy phase for minimizing the negative influence of this location technique.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

20704 - Energy and fuels

Projekt

<a href="/cs/project/EE2.3.30.0005" target="_blank" >EE2.3.30.0005: Podpora tvorby excelentních týmů mezioborového výzkumu na VUT</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2014

Kód důvěrnosti údajů

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

Název statě ve sborníku

The 12th International Conference on Developments in Power System Protection DPSP2014

ISBN

978-1-84919-834-9

ISSN

—

e-ISSN

—

Počet stran výsledku

6

Strana od-do

1-6

Název nakladatele

The Institution of Engineering and Technology IET

Místo vydání

Six Hills Way Stevenage Hertfordshire SG1 2AY UK

Místo konání akce

Copenhagen

Datum konání akce

31. 3. 2014

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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