High Voltage Topologies for Very Fast Transient Measurements

A. P. Elg (Corresponding author), S. Passon, J. Meisner, J. Hällström

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

Abstract

High voltage equipment is subjected to several types of electrical stress during operation, why testing by transient wave shapes is routinely performed. Measurement systems are being developed by National Metrology Institutes (NMI) for traceable calibration of sensors used in Gas Insulated Switchgear (GIS) where front times below 10 ns are common. We refer to front times below this as Very Fast Transients (VFT). This paper presents advantages and disadvantages of various divider designs to be used for VFT measurement systems. Many of these are a heritage from lightning impulse measurement systems. Several divider designs are studied to investigate the contribution on uncertainties in both amplitude and time parameters in a measurement system. Four resistive designs based on ceramic bulk resistors, bifilar wire winding, a resistive liquid and thick film SMD resistors have been characterized and compared with a small damped capacitive divider. Step response measurements have been used to characterize several dividers in different geometrical configurations, looking at the transient response out of a wave propagation point of view with analysis of loop sizes, field distributions and proximity effects. The findings are that and minimizing skin effects and inductance in the dividers are essential for a fast response and settling. Convolution of the step responses with ideal reference curves showed that more development is needed to eliminate oscillations in the step response. Further improvement of the geometries and impedance matching is needed to achieve acceptable errors for VFT with front times T1 below 10 ns.

Original languageEnglish
Title of host publicationProceedings of the 21st International Symposium on High Voltage Engineering
Subtitle of host publicationISH 2019
EditorsBálint Németh
PublisherSpringer
Pages1316-1327
Number of pages12
Volume1
ISBN (Electronic)978-3-030-31676-1
ISBN (Print)978-3-030-31675-4
DOIs
Publication statusPublished - 1 Jan 2020
MoE publication typeA4 Article in a conference publication
Event21st International Symposium on High Voltage Engineering, ISH 2019 - Budapest, Hungary
Duration: 26 Aug 201930 Aug 2019

Publication series

SeriesLecture Notes in Electrical Engineering
Volume598 LNEE
ISSN1876-1100

Conference

Conference21st International Symposium on High Voltage Engineering, ISH 2019
Abbreviated titleISH 2019
CountryHungary
CityBudapest
Period26/08/1930/08/19

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Keywords

  • Fast transients
  • High voltage divider
  • High voltage impulse

Cite this

Elg, A. P., Passon, S., Meisner, J., & Hällström, J. (2020). High Voltage Topologies for Very Fast Transient Measurements. In B. Németh (Ed.), Proceedings of the 21st International Symposium on High Voltage Engineering: ISH 2019 (Vol. 1, pp. 1316-1327). Springer. Lecture Notes in Electrical Engineering, Vol.. 598 LNEE https://doi.org/10.1007/978-3-030-31676-1_123