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Transient Behaviour of VSC-HVDC Links with DC Breakers Under Faults
KTH, School of Electrical Engineering (EES), Electric Power and Energy Systems. (Power Electronics)ORCID iD: 0000-0001-8911-8352
KTH, School of Electrical Engineering (EES), Electric Power and Energy Systems. (Power Electronics)
KTH, School of Electrical Engineering (EES), Electric Power and Energy Systems. (Power Electronics)
KTH, School of Electrical Engineering (EES), Electric Power and Energy Systems. (Power Electronics)
2017 (English)Conference paper, Published paper (Other academic)
Abstract [en]

In future high-voltage direct current (HVDC) systems, a large number of HVDC breakers will be required.In this paper, the influence of HVDC breakers on the transient performance of point-to-point HVDC links in both asymmetrical and symmetrical monopolar configuration with half-bridge modular multilevel converters is studied with simulations in PSCAD. As HVDC breakers, the active resonant breaker and ABB’s hybrid breaker are considered. The analyzed scenarios include DC line faults, DC bus faults, and AC faults between the converter and the transformer. The highest DC breaking capability is required during DC line faults in the asymmetric and symmetric monopole. The converter stress is highest for DC bus faults and unbalanced converter AC faults in the asymmetric monopole and for DC bus pole-to-pole faults in the symmetric monopole. During DC pole-to-ground faults in the symmetric monopole, the HVDC breaker combined with DC side arrestors yields the lowest overvoltage stress on the cable of the healthy pole. The fault current shapes depend strongly on the interaction of the converter and the travelling waves on the lines, and differ from the fault current shapes in typical HVDC breaker test circuits. Furthermore, the active resonant breaker and the ABB hybrid breaker perform similarly in the used benchmarks due to the very fast DC line fault detection.

Place, publisher, year, edition, pages
2017.
Keyword [en]
HVDC, Power transmission, Multilevel converters, Voltage Source Converter (VSC), Fault handling strategy
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
Research subject
Electrical Engineering
Identifiers
URN: urn:nbn:se:kth:diva-210884OAI: oai:DiVA.org:kth-210884DiVA: diva2:1120675
Conference
EPE'17 ECCE Europe, Warsaw, September 11-14, 2017
Note

QC 20171002

Available from: 2017-07-06 Created: 2017-07-06 Last updated: 2017-10-02Bibliographically approved

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CiteExportLink to record
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Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
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  • asciidoc
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