Phase shift compensation method for the line differential protection on UHV-AC transmission lines

Line differential protection is popular for its good selectivity and simplicity as long as there is a dependable communication system between the two ends of the line. However, the sensitivity needs to be compromised when the traditional line differential scheme is applied for ultra-high voltage (UH...

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Bibliographic Details
Published in:Journal of engineering (Stevenage, England) England), 2018-10, Vol.2018 (15), p.876-880
Main Authors: Habib, Md Zakaria, Wang, Jianping, Li, Youyi, Taylor, Nathaniel
Format: Article
Language:English
Subjects:
line differential protection
phase shift compensation method
power transmission lines
power transmission protection
The 14th International Conference on Developments in Power System Protection (DPSP 2018)
UHV transmission line characteristics
UHV‐alternating current transmission lines
ultra‐high voltage‐alternating current lines
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Summary:Line differential protection is popular for its good selectivity and simplicity as long as there is a dependable communication system between the two ends of the line. However, the sensitivity needs to be compromised when the traditional line differential scheme is applied for ultra-high voltage (UHV)-alternating current lines because of the large charging current. A study of the impact of the UHV transmission line characteristics on line differential protection and a proposed solution based on the compensation of the phase shift that exists between the sending and receiving end currents are presented.
ISSN:2051-3305
2051-3305
DOI:10.1049/joe.2018.0155