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A PMU-based state estimator considering classic HVDC links under different control modes
KTH, School of Electrical Engineering (EES), Electric Power Systems. (SmarTS Lab)
KTH, School of Electrical Engineering (EES), Electric Power Systems. (SmarTS Lab)ORCID iD: 0000-0002-4125-1055
2015 (English)In: Sustainable Energy, Grids and Networks, ISSN 2352-4677, Vol. 2, 69-82 p.Article in journal (Refereed) Published
Abstract [en]

This paper aims to develop a PMU-based state estimation algorithm that considers the presence of classic HVDC links operating under different control modes. Thus, hybrid AC/DC grid state estimation becomes feasible. In this algorithm we assume that DC link measurements can be sampled and reported at the same rate as PMU measurements, so that both AC and DC states can be estimated simultaneously in real-time. The estimation algorithm uses synchrophasors in polar coordinates, which allows angle bias detection and correction. In addition, some practical issues for the proposed state estimator are discussed, including observability and measurement redundancy, measurement noise and weightings, and angle bias correction. Finally, study cases using different power system models are carried out to show the state estimator’s performances during both steady conditions and dynamic changes. Relatively small residuals during steady conditions validate accuracy; results during dynamic changes verify the estimator’s reliability.

Place, publisher, year, edition, pages
Elsevier, 2015. Vol. 2, 69-82 p.
Keyword [en]
PMU-based state estimation; Classic HVDC link; PMU; Hybrid AC and DC state estimation
National Category
Other Electrical Engineering, Electronic Engineering, Information Engineering
Research subject
Electrical Engineering
Identifiers
URN: urn:nbn:se:kth:diva-170838DOI: 10.1016/j.segan.2015.04.004OAI: oai:DiVA.org:kth-170838DiVA: diva2:840501
Funder
StandUpEU, FP7, Seventh Framework Programme
Note

QC 20150709

Available from: 2015-07-08 Created: 2015-07-08 Last updated: 2015-07-09Bibliographically approved

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Vanfretti, Luigi

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CiteExportLink to record
Permanent link

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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
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf