Published January 1, 2015 | Version v1
Journal article Open

Performance of a Modular Wideband HVDC Reference Divider for Voltages up to 1000 kV

  • 1. VTT Tech Res Ctr Finland, Ctr Metrol, Espoo 02044, Finland
  • 2. SP Tech Res Inst Sweden, SE-50115 Boras, Sweden
  • 3. TUBITAK Natl Metrol Inst, TR-41470 Gebze, Turkey
  • 4. VSL Dutch Metrol Inst, NL-2629 JA Delft, Netherlands
  • 5. Aalto Univ, Espoo 02150, Finland
  • 6. Phys Tech Bundesanstalt, D-38116 Braunschweig, Germany
  • 7. Trench Switzerland & France, F-68297 St Louis, France

Description

This paper describes the design and performance of a modular wideband high-voltage dc (HVDC) reference divider with a ratio uncertainty of less than 0.005% at 1000 kV. The divider has a maximum nominal voltage of 1000 kV when five 200-kV modules are stacked on top of each other. The divider is used for traceable calibration of HVDC measuring systems in customers' laboratories. The first priority in the design was the accuracy of HVDC measurements. In addition, the divider was designed to have wide bandwidth, both to enable measurement of ripple voltages and to prevent damage during possible flashovers.

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