Novel Auto-Reclosing Blocking Method for Combined Overhead-Cable Lines in Power Networks

Ricardo Granizo Arrabé, Carlos Antonio Platero Gaona, Fernando Álvarez Gómez and Emilio Rebollo López
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Ricardo Granizo Arrabé: Department of Electrical Engineering, ETS Ingenieros Industriales, Technical University of Madrid, C/José Gutierrez Abascal, 2, 28006 Madrid, Spain
Carlos Antonio Platero Gaona: Department of Electrical Engineering, ETS Ingenieros Industriales, Technical University of Madrid, C/José Gutierrez Abascal, 2, 28006 Madrid, Spain
Fernando Álvarez Gómez: Department of Electrical Engineering, ETS Ingeniería y Diseño Industrial, Technical University of Madrid, C/Ronda de Valencia, 3, 28012 Madrid, Spain
Emilio Rebollo López: Department of Electrical Engineering, ETS Ingenieros Industriales, Technical University of Madrid, C/José Gutierrez Abascal, 2, 28006 Madrid, Spain

Energies, 2016, vol. 9, issue 11, 1-20

Abstract: This paper presents a novel auto-reclosing blocking method for combined overhead-cable lines in power distribution networks that are solidly or impedance grounded, with distribution transformers in a delta connection in their high-voltage sides. The main contribution of this new technique is that it can detect whether a ground fault has been produced at the overhead line side or at the cable line side, thus improving the performance of the auto-reclosing functionality. This localization technique is based on the measurements and analysis of the argument differences between the load currents in the active conductors of the cable and the currents in the shields at the cable end where the transformers in delta connection are installed, including a wavelet analysis. This technique has been verified through computer simulations and experimental laboratory tests.

Keywords: ground faults; protection; distribution protections; electrical distribution networks (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2016
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (3)

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Persistent link: https://EconPapers.repec.org/RePEc:gam:jeners:v:9:y:2016:i:11:p:964-:d:83103

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