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Cristin-resultat-ID:
2051894
Sist endret:
18. januar 2023, 11:07
NVI-rapporteringsår:
2022
Resultat
Vitenskapelig artikkel
2022
Two novel current-based methods for locating earth faults in unearthed ring operating MV networks
Tesfaye Amare Zerihun
Thomas Treider
Henning Taxt
Lars B. Nordevall
og
Thomas Sagvold Haugan
Tidsskrift
Tidsskrift
Electric power systems research
ISSN 0378-7796
e-ISSN 1873-2046
NVI-nivå 1
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Om resultatet
Om resultatet
Vitenskapelig artikkel
Publiseringsår: 2022
Publisert online: 2022
Trykket: 2022
Volum: 213
Open Access
Lenker
Lenker
original online (doi)
https://doi.org/10.1016/j.epsr.2022.108774
Institusjonsarkiv
hdl.handle.net/11250/3045370
Importkilder
Importkilder
Scopus-ID: 2-s2.0-85138033894
Beskrivelse
Beskrivelse
Engelsk
Tittel
Two novel current-based methods for locating earth faults in unearthed ring operating MV networks
Sammendrag
Automated fault location plays a key role in improving the reliability of modern power grids—it helps to reduce the power outage time and the number of affected customers. Earth faults in isolated systems are among the fault types that are difficult to detect and locate with a reasonable accuracy, and there has therefore not been a well-established method for detecting and locating such faults in isolated systems. This paper presents two novel current-based methods for locating earth faults in unearthed closed-ring MV networks. The methods are based on the utilisation of sequence components of standard current and voltage measurement at a primary substation and they do not require new devices or measurements in the field. Both methods are tested with a simulation of a network based on data provided by a Norwegian network operator and their prediction performances were investigated considering different scenarios on fault resistance, load asymmetry and measurement errors. Both methods performed well and showed good accuracy. The simulation results are promising and strengthens the prospect of further testing of the methods in real networks and adoption of the methods for a real-world implementation.
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Bidragsytere
Bidragsytere
Tesfaye Amare Zerihun
Forfatter
ved Energisystemer ved SINTEF Energi AS
Thomas Treider
Forfatter
ved Institutt for elektrisk energi ved Norges teknisk-naturvitenskapelige universitet
Henning Taxt
Forfatter
ved Energisystemer ved SINTEF Energi AS
Lars B. Nordevall
Forfatter
ved ELVIA
Thomas Sagvold Haugan
Forfatter
ved Institutt for elektrisk energi ved Norges teknisk-naturvitenskapelige universitet
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