Optimization of field grading for a 1000 KV wide-band voltage divider

Joni Klüss, Jari Hällström, Alf Peter Elg

    Research output: Contribution to journalArticleScientificpeer-review

    8 Citations (Scopus)

    Abstract

    An HVDC reference voltage divider has been designed for high accuracy and wide-band measurements up to 1000kV. To maintain wide-band characteristics, field distribution must be optimized in order to minimize the response time of the divider. To compensate the stray capacitance, a capacitive path that surrounds the resistive reference divider is added to function as a shield. Optimal capacitance values producing a matched distribution are obtained using 3D FEM simulations. Factors affecting the performance of the divider are assessed by simulating multiple scenarios representing different practical considerations in real-life applications.

    Original languageEnglish
    Pages (from-to)140-150
    Number of pages11
    JournalJournal of Electrostatics
    Volume73
    DOIs
    Publication statusPublished - Feb 2015
    MoE publication typeA1 Journal article-refereed

    Keywords

    • Electromagnetic fields
    • Finite element methods
    • HVDC transmission
    • Voltage dividers
    • Voltage measurement

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