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

Publikation: Konferencebidrag uden forlag/tidsskriftPaper uden forlag/tidsskriftForskningpeer review

Abstrakt

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.
OriginalsprogEngelsk
Publikationsdato2013
Antal sider6
StatusUdgivet - 2013
BegivenhedInternational Conference on Power Systems Transients, IPST 2013 - Vancouver, Canada
Varighed: 18 jul. 201320 jul. 2013

Konference

KonferenceInternational Conference on Power Systems Transients, IPST 2013
LandCanada
ByVancouver
Periode18/07/201320/07/2013

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  • Citationsformater

    Jensen, C. F., Nanayakkara, O. M. K. K., Rajapakse, A., Gudmundsdottir, U. S., & Bak, C. L. (2013). Online fault location on AC cables in underground transmission systems using screen currents. Afhandling præsenteret på International Conference on Power Systems Transients, IPST 2013, Vancouver, Canada. http://ipstconf.org/papers/Proc_IPST2013/13IPST040.pdf