Online fault location on AC cables in underground transmission systems using screen currents

Christian Flytkjær Jensen; O.M.K.K Nanayakkara; Athula Rajapakse; Unnur Stella Gudmundsdottir; Claus Leth Bak

Online fault location on AC cables in underground transmission systems using screen currents

Christian Flytkjær Jensen, O.M.K.K Nanayakkara, Athula Rajapakse, Unnur Stella Gudmundsdottir, Claus Leth Bak

AAU Energy

Research output: Contribution to conference without publisher/journal › Paper without publisher/journal › Research › peer-review

Abstract

This paper studies online travelling wave methods for fault location on a crossbonded cable system using screen currents. During the construction of the electrical connection to the 400 MW off shore wind farm Anholt, it was possible to perform measurements on a 38.4 km crossbonded cable system. At 31.4 km, all cables were accessible which made it possible to apply a fault using an arc free breaker and measure the travelling waves at each end of the cable.
On a crossbonded cable system, the sheath is short circuited and grounded at both ends. This makes possible the use of low voltage Rogowski coils if the screen currents contain the necessary information for accurate fault location. In this paper, this is examined by analysis of field measurements and through a
study of simulations. The wavelet transform and visual inspection methods are used and the accuracy is compared.
Field measurements and simulations are compared for testing the reliability of using simulations for studying fault location methods.

Original language	English
Publication date	2013
Number of pages	6
Publication status	Published - 2013
Event	International Conference on Power Systems Transients, IPST 2013 - Vancouver, Canada Duration: 18 Jul 2013 → 20 Jul 2013

Conference

Conference	International Conference on Power Systems Transients, IPST 2013
Country/Territory	Canada
City	Vancouver
Period	18/07/2013 → 20/07/2013

Keywords

Electromagnetic Transients
Cable models
Online Fault Location
Wavelet Transform

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http://ipstconf.org/papers/Proc_IPST2013/13IPST040.pdf

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Cite this

@conference{c56236d31bd045a0b6c0019b3486417b,

title = "Online fault location on AC cables in underground transmission systems using screen currents",

abstract = "This paper studies online travelling wave methods for fault location on a crossbonded cable system using screen currents. During the construction of the electrical connection to the 400 MW off shore wind farm Anholt, it was possible to perform measurements on a 38.4 km crossbonded cable system. At 31.4 km, all cables were accessible which made it possible to apply a fault using an arc free breaker and measure the travelling waves at each end of the cable.On a crossbonded cable system, the sheath is short circuited and grounded at both ends. This makes possible the use of low voltage Rogowski coils if the screen currents contain the necessary information for accurate fault location. In this paper, this is examined by analysis of field measurements and through astudy of simulations. The wavelet transform and visual inspection methods are used and the accuracy is compared.Field measurements and simulations are compared for testing the reliability of using simulations for studying fault location methods.",

keywords = "Electromagnetic Transients, Cable models, Online Fault Location, Wavelet Transform",

author = "Jensen, {Christian Flytkj{\ae}r} and O.M.K.K Nanayakkara and Athula Rajapakse and Gudmundsdottir, {Unnur Stella} and Bak, {Claus Leth}",

year = "2013",

language = "English",

note = "International Conference on Power Systems Transients, IPST 2013 ; Conference date: 18-07-2013 Through 20-07-2013",

}

Online fault location on AC cables in underground transmission systems using screen currents. / Jensen, Christian Flytkjær; Nanayakkara, O.M.K.K; Rajapakse, Athula et al.
2013. Paper presented at International Conference on Power Systems Transients, IPST 2013, Vancouver, Canada.

Research output: Contribution to conference without publisher/journal › Paper without publisher/journal › Research › peer-review

TY - CONF

T1 - Online fault location on AC cables in underground transmission systems using screen currents

AU - Jensen, Christian Flytkjær

AU - Nanayakkara, O.M.K.K

AU - Rajapakse, Athula

AU - Gudmundsdottir, Unnur Stella

AU - Bak, Claus Leth

PY - 2013

Y1 - 2013

N2 - This paper studies online travelling wave methods for fault location on a crossbonded cable system using screen currents. During the construction of the electrical connection to the 400 MW off shore wind farm Anholt, it was possible to perform measurements on a 38.4 km crossbonded cable system. At 31.4 km, all cables were accessible which made it possible to apply a fault using an arc free breaker and measure the travelling waves at each end of the cable.On a crossbonded cable system, the sheath is short circuited and grounded at both ends. This makes possible the use of low voltage Rogowski coils if the screen currents contain the necessary information for accurate fault location. In this paper, this is examined by analysis of field measurements and through astudy of simulations. The wavelet transform and visual inspection methods are used and the accuracy is compared.Field measurements and simulations are compared for testing the reliability of using simulations for studying fault location methods.

AB - This paper studies online travelling wave methods for fault location on a crossbonded cable system using screen currents. During the construction of the electrical connection to the 400 MW off shore wind farm Anholt, it was possible to perform measurements on a 38.4 km crossbonded cable system. At 31.4 km, all cables were accessible which made it possible to apply a fault using an arc free breaker and measure the travelling waves at each end of the cable.On a crossbonded cable system, the sheath is short circuited and grounded at both ends. This makes possible the use of low voltage Rogowski coils if the screen currents contain the necessary information for accurate fault location. In this paper, this is examined by analysis of field measurements and through astudy of simulations. The wavelet transform and visual inspection methods are used and the accuracy is compared.Field measurements and simulations are compared for testing the reliability of using simulations for studying fault location methods.

KW - Electromagnetic Transients

KW - Cable models

KW - Online Fault Location

KW - Wavelet Transform

M3 - Paper without publisher/journal

T2 - International Conference on Power Systems Transients, IPST 2013

Y2 - 18 July 2013 through 20 July 2013

ER -

Online fault location on AC cables in underground transmission systems using screen currents

Abstract

Conference

Keywords

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