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Dynamical decentralized voltage control of multi-terminal HVDC grids
KTH, School of Electrical Engineering (EES), Automatic Control. KTH, School of Electrical Engineering (EES), Centres, ACCESS Linnaeus Centre.
2017 (English)In: 2016 European Control Conference, ECC 2016, Institute of Electrical and Electronics Engineers (IEEE), 2017, 1519-1524 p., 7810505Conference paper (Refereed)
Abstract [en]

High-voltage direct current (HVDC) is a commonly used technology for long-distance electric power transmission, mainly due to its low resistive losses. When connecting multiple HVDC lines into a multi-terminal HVDC (MTDC) system, several challenges arise. To ensure safe and efficient operation of MTDC systems, the voltage of all terminals need to be steered to within an operational range. In this paper we study the commonly used decentralized voltage droop controller, and show that it in general does not steer the voltages to within the operational range. We propose a decentralized PI controller with deadband, and show that it always steers the voltages to within the operational range regardless of the loads. Additionally we show that the proposed controller inherits the property of proportional power sharing from the droop controller, provided that both the loads and the line resistances are sufficiently low. The results are validated through simulation in Matlab.

Place, publisher, year, edition, pages
Institute of Electrical and Electronics Engineers (IEEE), 2017. 1519-1524 p., 7810505
National Category
Control Engineering
Identifiers
URN: urn:nbn:se:kth:diva-208465DOI: 10.1109/ECC.2016.7810505ISI: 000392695300252ScopusID: 2-s2.0-85014997927ISBN: 9781509025916 OAI: oai:DiVA.org:kth-208465DiVA: diva2:1107159
Conference
2016 European Control Conference, ECC 2016, Aalborg, Denmark, 29 June 2016 through 1 July 2016
Funder
Swedish Research CouncilKnut and Alice Wallenberg Foundation
Note

QC 20170609

Available from: 2017-06-09 Created: 2017-06-09 Last updated: 2017-06-09Bibliographically approved

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CiteExportLink to record
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Cite
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
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  • Other locale
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Output format
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  • asciidoc
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