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

7 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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