Fault phase selection scheme of EHV/UHV transmission line protection for high-resistance faults
Fault phase selection scheme of EHV/UHV transmission line protection for high-resistance faults
- Author(s): Z.Y. Xu ; X.Q. Yan ; L. Ran ; X. Zhang
- DOI: 10.1049/iet-gtd.2011.0860
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- Author(s): Z.Y. Xu 1, 2 ; X.Q. Yan 1 ; L. Ran 3 ; X. Zhang 1
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View affiliations
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Affiliations:
1: School of Electrical and Electronic Engineering, North China Electric Power University, Beijing, People's Republic of China
2: School of Electrical and Electronic Engineering, Beijing Sifang Automation Co. Ltd, Beijing, People's Republic of China
3: School of Engineering, Science Laboratories, University of Durham, Durham, UK
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Affiliations:
1: School of Electrical and Electronic Engineering, North China Electric Power University, Beijing, People's Republic of China
- Source:
Volume 6, Issue 11,
November 2012,
p.
1180 – 1187
DOI: 10.1049/iet-gtd.2011.0860 , Print ISSN 1751-8687, Online ISSN 1751-8695
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This study proposes a fault phase selection scheme for EHV/UHV transmission line protection during unbalanced faults. The scheme utilises the relative phase angle relationship between the negative and zero sequence currents and the fault impedance to identify the fault phase, providing particularly satisfactory tolerance towards high-fault resistance during normal operating situations and power swings. Real time digital simulator (RTDS) simulations demonstrate the outstanding performance of the proposed scheme in varying pre-fault system and fault conditions.
Inspec keywords: power transmission faults; power transmission lines
Other keywords:
Subjects: Power transmission, distribution and supply; Power transmission lines and cables
References
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