Incomplete Cross-Bonding in the MV Line. Experience from the Operation of MV Single Cable Lines

Incomplete Cross-Bonding in the MV Line. Experience from the Operation of MV Single Cable Lines

Cable lines are one of the basic components of power systems. Medium and high voltage cables mainly comprise a metallic sheath, which is concentric to the main core conductor. There are several operating schemes of such cable lines, which differ in the place of earthing of sheaths and the possible u...

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Main Authors: Krzysztof Dobrzynski, Zbigniew Lubosny, Jacek Klucznik, Janusz Grala, Dominik Falkowski
Format: Article
Language:English
Published: MDPI AG 2020-10-01
Series:Energies
Subjects:
MV cable line
induced sheath voltage
induced sheath current
cross-bonding
Online Access:https://www.mdpi.com/1996-1073/13/20/5292
id doaj-52d868641dbe493092f44319db2d1b70
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spelling doaj-52d868641dbe493092f44319db2d1b702020-11-25T03:57:23ZengMDPI AGEnergies1996-10732020-10-01135292529210.3390/en13205292Incomplete Cross-Bonding in the MV Line. Experience from the Operation of MV Single Cable LinesKrzysztof Dobrzynski0Zbigniew Lubosny1Jacek Klucznik2Janusz Grala3Dominik Falkowski4Faculty of Electrical and Control Engineering, Gdańsk University of Technology, Narutowicza 11/12, PL-80-233 Gdańsk, PolandFaculty of Electrical and Control Engineering, Gdańsk University of Technology, Narutowicza 11/12, PL-80-233 Gdańsk, PolandFaculty of Electrical and Control Engineering, Gdańsk University of Technology, Narutowicza 11/12, PL-80-233 Gdańsk, PolandENERGA-OPERATOR SA, Marynarki Polskiej 130, PL-80-557 Gdańsk, PolandENERGA-OPERATOR SA, Marynarki Polskiej 130, PL-80-557 Gdańsk, PolandCable lines are one of the basic components of power systems. Medium and high voltage cables mainly comprise a metallic sheath, which is concentric to the main core conductor. There are several operating schemes of such cable lines, which differ in the place of earthing of sheaths and the possible use of the sheaths and/or conductors crossing. The sheaths cross-bonding is typically done in two places of one cable line section, and it allows to reduce power losses. Nevertheless, the use of incomplete sheaths crossing—only in one place on cable route may have economic justification. The paper presents an incomplete sheaths cross-bonding analysis of an existing medium voltage cable line. The results obtained by the mathematical model are validated by measurements taken on 30 October 2019 on an existing cable line. Measurements recorded on a real object for various systems of crossing sheaths are presented. The influence of incorrect sheaths crossing on the measured quantities was shown. In addition, the risk of excess voltage on the sheaths during short-circuits has been verified using a mathematical model.https://www.mdpi.com/1996-1073/13/20/5292MV cable lineinduced sheath voltageinduced sheath currentcross-bonding
collection DOAJ
language English
format Article
sources DOAJ
author Krzysztof Dobrzynski
Zbigniew Lubosny
Jacek Klucznik
Janusz Grala
Dominik Falkowski
spellingShingle Krzysztof Dobrzynski
Zbigniew Lubosny
Jacek Klucznik
Janusz Grala
Dominik Falkowski
Incomplete Cross-Bonding in the MV Line. Experience from the Operation of MV Single Cable Lines
Energies
MV cable line
induced sheath voltage
induced sheath current
cross-bonding
author_facet Krzysztof Dobrzynski
Zbigniew Lubosny
Jacek Klucznik
Janusz Grala
Dominik Falkowski
author_sort Krzysztof Dobrzynski
title Incomplete Cross-Bonding in the MV Line. Experience from the Operation of MV Single Cable Lines
title_short Incomplete Cross-Bonding in the MV Line. Experience from the Operation of MV Single Cable Lines
title_full Incomplete Cross-Bonding in the MV Line. Experience from the Operation of MV Single Cable Lines
title_fullStr Incomplete Cross-Bonding in the MV Line. Experience from the Operation of MV Single Cable Lines
title_full_unstemmed Incomplete Cross-Bonding in the MV Line. Experience from the Operation of MV Single Cable Lines
title_sort incomplete cross-bonding in the mv line. experience from the operation of mv single cable lines
publisher MDPI AG
series Energies
issn 1996-1073
publishDate 2020-10-01
description Cable lines are one of the basic components of power systems. Medium and high voltage cables mainly comprise a metallic sheath, which is concentric to the main core conductor. There are several operating schemes of such cable lines, which differ in the place of earthing of sheaths and the possible use of the sheaths and/or conductors crossing. The sheaths cross-bonding is typically done in two places of one cable line section, and it allows to reduce power losses. Nevertheless, the use of incomplete sheaths crossing—only in one place on cable route may have economic justification. The paper presents an incomplete sheaths cross-bonding analysis of an existing medium voltage cable line. The results obtained by the mathematical model are validated by measurements taken on 30 October 2019 on an existing cable line. Measurements recorded on a real object for various systems of crossing sheaths are presented. The influence of incorrect sheaths crossing on the measured quantities was shown. In addition, the risk of excess voltage on the sheaths during short-circuits has been verified using a mathematical model.
topic MV cable line
induced sheath voltage
induced sheath current
cross-bonding
url https://www.mdpi.com/1996-1073/13/20/5292
work_keys_str_mv AT krzysztofdobrzynski incompletecrossbondinginthemvlineexperiencefromtheoperationofmvsinglecablelines
AT zbigniewlubosny incompletecrossbondinginthemvlineexperiencefromtheoperationofmvsinglecablelines
AT jacekklucznik incompletecrossbondinginthemvlineexperiencefromtheoperationofmvsinglecablelines
AT januszgrala incompletecrossbondinginthemvlineexperiencefromtheoperationofmvsinglecablelines
AT dominikfalkowski incompletecrossbondinginthemvlineexperiencefromtheoperationofmvsinglecablelines
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