Mahamedi, B, Sanaye-Pasand, M, Azizi, S orcid.org/0000-0002-9274-1177 et al. (1 more author) (2015) Unsynchronised fault-location technique for three-terminal lines. IET Generation, Transmission & Distribution, 9 (15). pp. 2099-2107. ISSN 1751-8687
Abstract
This study describes a new fault-location technique using negative-sequence voltage for three-terminal lines. The ratios between the negative-sequence voltage magnitudes measured at each terminal are utilised to first determine the faulted section and then to estimate the exact fault location within the section. Since the current data is not deployed, the influence of inherent errors of current transformers can be avoided. The proposed method can accurately locate the unbalanced faults, that is, single-phase-to-ground, double-phase-to-ground, and phase-to-phase faults, regardless of the fault resistance and pre-fault conditions and without any need to identify the fault type. The method requires only the negative-sequence reactance behind each terminal which can be estimated by the short-circuit analysis with an acceptable accuracy. Reliability and practicality of the proposed method make it an attractive option to include in numerical protective relays. Simulation experiments with different fault cases reveal the capability of the proposed method.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Keywords: | power transmission faults; power transmission lines; power transmission protection; relay protection; power transmission reliability; fault location; short-circuit currents; unsynchronised fault-location technique; three-terminal lines; negative-sequence voltage magnitudes; exact fault location estimation; single-phase-to-ground fault; double-phase-to-ground fault; phase-to-phase fault; fault resistance; pre fault conditions; negative-sequence reactance; short-circuit analysis; numerical protective relays |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Electronic & Electrical Engineering (Leeds) > Institute of Communication & Power Networks (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 06 Mar 2019 15:18 |
Last Modified: | 06 Mar 2019 15:19 |
Status: | Published |
Publisher: | IEEE |
Identification Number: | 10.1049/iet-gtd.2015.0062 |
Related URLs: | |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:143053 |