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DOI: https://doi.org/10.15407/techned2020.06.057

INVESTIGATION OF IMPEDANCE-DIFFERENTIAL PROTECTION’S ALGORITHM AS A FAULT LOCATOR FOR DOUBLE-CIRCUIT TRANSMISSION LINE

Journal Tekhnichna elektrodynamika
Publisher Institute of Electrodynamics National Academy of Science of Ukraine
ISSN 1607-7970 (print), 2218-1903 (online)
Issue No 6, 2020 (November/December)
Pages 57 - 60

Authors
J. Herlender*, J. Izykowski**, B. Brusilowicz***
Wroclaw University of Science and Technology,
27, Wybrzeze Wyspianskiego st., 50-370 Wroclaw, Poland,
e-mail: Этот e-mail адрес защищен от спам-ботов, для его просмотра у Вас должен быть включен Javascript
* ORCID ID : https://orcid.org/0000-0002-9469-4546
** ORCID ID : https://orcid.org/0000-0002-1048-5510
*** ORCID ID : https://orcid.org/0000-0002-4113-2689

Abstract

This paper deals with an analysis of impedance-differential protection algorithm applied to locate faults on a double-circuit transmission line. In particular, the study of fault location accuracy for the case of using the relation between currents for negative-sequence not for zero-sequence, as it was presented so far, is provided. It results from the well-known fact that zero-sequence impedances are in practice considered as quite unreliable data. Therefore, one has to limit usage of zero-sequence impedance parameters as much as possible. Such approach was applied in this paper and therefore the use of the additional relation of currents for negative-sequence is under investigation. The fault signals from ATP-EMTP simulation on the sample double-circuit transmission line was applied for evaluating the fault location accuracy. References 8, figures 4, table 1.

Key words: double-circuit line, transmission line, fault location, ATP-EMTP, simulation, algorithm, negative and zero sequences

Received: 28.02.2020
Accepted: 12.05.2020
Published: 21.10.2020


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