Characterization of the linearity of a 1200 kV HVDC divider

Research output: Book/ReportReport

Abstract

The report describes the methods used and results of a characterization of the voltage non-linearity of a 1200 kV HVDC divider at Aalto University high voltage laboratory. Measurements were performed in April 2012 and June 2013. Historical data from 1990 and 2007 were combined with new measurement results to gain good understanding of the voltage dependence and its reasons. The new more precise measurements confirm the findings of the 2007 measurements. The results show that the scale factor of the divider has a linear relative voltage dependence of -0.2 %/MV. It was also found that the oil-filled high voltage resistors have a thermal time constant of several hours.
Original languageEnglish
Place of PublicationEspoo
PublisherCentre of Metrology and Accreditation
Number of pages16
ISBN (Print)978-952-6682-08-2 (PDF)
Publication statusPublished - 2013
MoE publication typeD4 Published development or research report or study

Publication series

SeriesMIKES Publication
NumberJ2/2013
ISSN1235-5704

Keywords

  • voltage measurements
  • HVDC dividers

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    Hällström, J. (2013). Characterization of the linearity of a 1200 kV HVDC divider. Centre of Metrology and Accreditation. MIKES Publication, No. J2/2013 http://www.vtt.fi/inf/pdf/MIKES/2013-J2.pdf