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Selective wave-front based protection algorithm for MTDC systems
KTH, School of Electrical Engineering (EES), Electric Power and Energy Systems.ORCID iD: 0000-0002-1558-2539
KTH, School of Electrical Engineering (EES), Electric Power and Energy Systems.ORCID iD: 0000-0002-8565-4753
2016 (English)In: IET Conference Publications, IEEE, 2016, no CP671Conference paper, Published paper (Refereed)
Abstract [en]

Protection algorithms which can differentiate between different faults is a necessity for the reliable operation of multiterminal HVDC systems with multiple DC breakers. For selective detection by single-ended line protection algorithms, current limiting reactors installed in series with the breaker at the opposite side of the line can be used for limiting the reach in the forward direction. In this paper, a further development on the idea of basing the detection on the incident traveling wave is presented. The extraction of the incident wave is achieved by representing the frequency dependent characteristic admittance by a rational approximation. The main advantage over other single-ended protection methods is that the incident wave is independent of the boundary conditions at the terminal of the line. In this paper, this is illustrated by the simulation of both internal and external faults during two different operation scenarios in a four-terminal MTDC system. Finally, the performance of the suggested protection algorithm is compared to other single-ended methods with regard to the protection margin.

Place, publisher, year, edition, pages
IEEE, 2016. no CP671
Keywords [en]
Circuit breakers, HVDC power transmission, Power transmission faults, Power transmission protection, Current limiting reactors, DC power transmission, Electric circuit breakers, Electric fault currents, Power transmission, Wavefronts, Frequency dependent characteristics, Multi-terminal HVDC, Protection algorithms, Rational approximations, Selective detection, Single-ended protection, Electric power system protection
National Category
Communication Systems
Identifiers
URN: urn:nbn:se:kth:diva-202193Scopus ID: 2-s2.0-84997822135OAI: oai:DiVA.org:kth-202193DiVA, id: diva2:1075674
Conference
13th International Conference on Development in Power System Protection 2016, DPSP 2016, 7 March 2016 through 10 March 2016
Note

QC 20170220

Available from: 2017-02-20 Created: 2017-02-20 Last updated: 2017-06-29Bibliographically approved

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Scopushttp://www.ieee-pes.org/meetings-and-conferences/conference-calendar/monthly-view/166-technically-cosponsored-by-pes/473-dpsp

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Johannesson, NiclasNorrga, Staffan

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CiteExportLink to record
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