Published in

59th Annual Conference for Protective Relay Engineers, 2006.

DOI: 10.1109/cpre.2006.1638691

2006 Power Systems Conference: Advanced Metering, Protection, Control, Communication, and Distributed Resources

DOI: 10.1109/psamp.2006.285402

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Protection of High-Voltage AC Cables

Proceedings article published in 1 by Demetrios A. Tziouvaras
This paper was not found in any repository, but could be made available legally by the author.
This paper was not found in any repository, but could be made available legally by the author.

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Abstract

High-voltage underground AC cables have significantly different electrical characteristics than overhead transmission lines. The cable sheath or shield grounding method has a major impact on the zero-sequence impedance of underground cables. Understanding how the underground cable grounding method affects the series sequence impedances is very fundamental to underground cable protection. In the paper we briefly discuss the types of underground cables, their bonding and grounding methods, and the fundamental differences between overhead transmission lines and cable electrical characteristics. Finally we discuss the application of short-circuit protection for high-voltage AC cables