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 (MIKES)
    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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