Longitudinal differential protection based on the Universal Line Model
2015 (English)In: IECON 2015 - 41st Annual Conference of the IEEE Industrial Electronics Society, Institute of Electrical and Electronics Engineers (IEEE), 2015, 1091-1096 p.Conference paper (Refereed)
HVDC breakers, capable of interrupting DC fault currents within only a few milliseconds are currently under development. Application of such breakers allows for selective DC fault clearing which previously has limited the practical application of large-scale DC grids. However, for reliable operation of such systems, the underlying protection algorithms must be able to distinguish between different faults so that correct DC breakers are used to clear the fault. This paper introduces a longitudinal differential protection algorithm which is derived in the frequency domain from the transmission line equations. For translation into the time domain, it relies on the techniques used by the Universal Line Model, known to accurately represent the frequency dependent behavior of both cables and overhead lines. Since the protection accounts for the distributed parameters of transmission lines, it is inherently insensitive to external faults or disturbances. This allows for implementation with fast detection times, particularly desired in multi-terminal HVDC systems.
Place, publisher, year, edition, pages
Institute of Electrical and Electronics Engineers (IEEE), 2015. 1091-1096 p.
Other Electrical Engineering, Electronic Engineering, Information Engineering
IdentifiersURN: urn:nbn:se:kth:diva-195373DOI: 10.1109/IECON.2015.7392245ISI: 000382950701030ScopusID: 2-s2.0-84973129486ISBN: 978-147991762-4OAI: oai:DiVA.org:kth-195373DiVA: diva2:1044366
41st Annual Conference of the IEEE Industrial Electronics Society, IECON 2015, Pacifico YokohamaYokohama, Japan, 9 November 2015 through 12 November 2015
QC 201611032016-11-032016-11-032016-11-29Bibliographically approved