The Influence of Additional Earthing of Healthy Phase for Earth Fault Location on Overvoltage in Distribution Networks
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26220%2F14%3APU112429" target="_blank" >RIV/00216305:26220/14:PU112429 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Alternative languages
Result language
angličtina
Original language name
The Influence of Additional Earthing of Healthy Phase for Earth Fault Location on Overvoltage in Distribution Networks
Original language description
The Czech MV compensated networks operated by distribution system operator E.ON are not switched off immediately in the case of earth fault. In such cases, there is real risk of hazard voltages around faulty place. Therefore automatic for additional earthing of faulty phase is installed under pilot project in one supply substation 22kV. This automatic can be also used for short-time connection (100 ms) of healthy phase to earthing system of supply substation that leads to double line-to-earth short circuit which increase level of fault current to value which is sufficient for calculation of the fault distance by fault locator installed in outgoing feeder. As performed field tests showed, this operation can caused high overvoltage up to 200 % of operation voltage, therefore the paper gives the recommendation for choosing of the healthy phase for minimizing the overvoltage during this location technique.
Czech name
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Czech description
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Classification
Type
D - Article in proceedings
CEP classification
JE - Non-nuclear power engineering, energy consumption and utilization
OECD FORD branch
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Result continuities
Project
<a href="/en/project/LO1210" target="_blank" >LO1210: Energy for Sustainable Development</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2014
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Article name in the collection
CIDEL Argentina 2014, International Conference on Electricity Distribution
ISBN
978-987-97399-6-9
ISSN
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e-ISSN
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Number of pages
7
Pages from-to
1-7
Publisher name
CIDEL 2014
Place of publication
Buenos Aires, Argentina
Event location
Buenos Aires
Event date
Sep 22, 2014
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
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