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Measuring method for deciding direction to a flickering source.
University of Borås, Faculty of Textiles, Engineering and Business.
Unipower AB.
2013 (English)Patent (Other (popular science, discussion, etc.))
Abstract [en]

The present invention relates to a method for deciding the direction to a flickering source in relation to a measurement point in an electrical network with alternating current with a network frequency (fc) with low-frequency amplitude variation from the flickering source. The invention is characterized in that the method comprises the steps: - recording of an amplitude-modulated current signal (i(n)) comprising signals that originate from the network frequency (fc) and the low-frequency amplitude variations in the current signal (i(n)); - recording of an amplitude-modulated voltage signal ((u(n)) comprising signals that originate from the network frequency (fc) and the low-frequency amplitude variations in the voltage signal (u(n)); - creation of a flicker power with a sign value by multiplication of the low-frequency amplitude variations in the current signal and the low-frequency amplitude variations in the voltage signal, and - analysis of the sign value, with the sign value indicating in which direction the flickering source is to be found in relation to the measurement point. The method also comprises an arrangement designed to be used when carrying out the method.

Place, publisher, year, edition, pages
2013.
Keywords [en]
Voltage flicker, voltage flicker assessment, flicker power flow, power quality, IEC 61000-4-15
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:hb:diva-3315Local ID: 2320/13137OAI: oai:DiVA.org:hb-3315DiVA, id: diva2:873455
Patent
European Patent Office EP1581816 (2011-08-10)
Note

Internationell klassificering G01R31/08, G01R29/26 Kooperativ klassning G01R31/08, G01R29/26 Europeisk klassificering G01R29/26, G01R31/08

Available from: 2015-11-24 Created: 2015-11-24 Last updated: 2018-03-21Bibliographically approved

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http://www.google.com/patents/EP1581816B1?cl=en&hl=sv

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Axelberg, Peter

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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