Online Fault Location on AC Cables in Underground Transmission Systems using Sheath Currents

Christian Flytkjær Jensen; Kasun Nanayakkarab; Athula  Rajapakse; Unnur Stella Gudmundsdottir; Claus Leth Bak

doi:10.1016/j.epsr.2014.04.002

Online Fault Location on AC Cables in Underground Transmission Systems using Sheath Currents

Christian Flytkjær Jensen, Kasun Nanayakkarab, Athula Rajapakse, Unnur Stella Gudmundsdottir, Claus Leth Bak

AAU Energy

Research output: Contribution to journal › Journal article › Research › peer-review

26 Citations (Scopus)

Abstract

This paper studies online travelling wave methods for fault location on a crossbonded cable system using sheath 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 sheaths are short circuited and grounded at both ends. This makes possible the use of low voltage Rogowski coils if the sheath 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 a visual inspection method 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
Article number	EPSR-D-13-01278
Journal	Electric Power Systems Research
Volume	115
Pages (from-to)	74–79
Number of pages	6
ISSN	0378-7796
DOIs	https://doi.org/10.1016/j.epsr.2014.04.002
Publication status	Published - Oct 2014

Bibliographical note

Invited paper from IPST 2013
Special issue based on selected expanded contributions from the 10th International Conference on Power System Transients (IPST)

Keywords

Fault location
Cable modelling
Crossbonding
Modal decomposition
Field measurements
Sheath currents

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10.1016/j.epsr.2014.04.002

http://www.sciencedirect.com/science/article/pii/S0378779614001321

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Cite this

@article{4b76374b1071444185a3f72e14027ddf,

title = "Online Fault Location on AC Cables in Underground Transmission Systems using Sheath Currents",

abstract = "This paper studies online travelling wave methods for fault location on a crossbonded cable system using sheath 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 sheaths are short circuited and grounded at both ends. This makes possible the use of low voltage Rogowski coils if the sheath 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 a visual inspection method 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 = "Fault location, Cable modelling, Crossbonding, Modal decomposition, Field measurements, Sheath currents",

author = "Jensen, {Christian Flytkj{\ae}r} and Kasun Nanayakkarab and Athula Rajapakse and Gudmundsdottir, {Unnur Stella} and Bak, {Claus Leth}",

note = "Invited paper from IPST 2013 Special issue based on selected expanded contributions from the 10th International Conference on Power System Transients (IPST)",

year = "2014",

month = oct,

doi = "10.1016/j.epsr.2014.04.002",

language = "English",

volume = "115",

pages = "74–79",

journal = "Electric Power Systems Research",

issn = "0378-7796",

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T1 - Online Fault Location on AC Cables in Underground Transmission Systems using Sheath Currents

AU - Jensen, Christian Flytkjær

AU - Nanayakkarab, Kasun

AU - Rajapakse, Athula

AU - Gudmundsdottir, Unnur Stella

AU - Bak, Claus Leth

N1 - Invited paper from IPST 2013 Special issue based on selected expanded contributions from the 10th International Conference on Power System Transients (IPST)

PY - 2014/10

Y1 - 2014/10

N2 - This paper studies online travelling wave methods for fault location on a crossbonded cable system using sheath 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 sheaths are short circuited and grounded at both ends. This makes possible the use of low voltage Rogowski coils if the sheath 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 a visual inspection method 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 sheath 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 sheaths are short circuited and grounded at both ends. This makes possible the use of low voltage Rogowski coils if the sheath 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 a visual inspection method 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 - Fault location

KW - Cable modelling

KW - Crossbonding

KW - Modal decomposition

KW - Field measurements

KW - Sheath currents

U2 - 10.1016/j.epsr.2014.04.002

DO - 10.1016/j.epsr.2014.04.002

M3 - Journal article

SN - 0378-7796

VL - 115

SP - 74

EP - 79

JO - Electric Power Systems Research

JF - Electric Power Systems Research

M1 - EPSR-D-13-01278

ER -

Online Fault Location on AC Cables in Underground Transmission Systems using Sheath Currents

Abstract

Bibliographical note

Keywords

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