Impulse-voltage measurement of distribution-class surge arresters by D-dot probes

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2 Citations (Scopus)

Abstract

This article presents the design and testing of two D-dot probes to measure residual voltages of surge arresters, namely, coaxial toroidal and radial conical types. Both probes were terminated by high impedance to measure the voltage directly, and a corona-free design was checked by calculating the electric-field profiles inside the test module. Simultaneous impulse-voltage measurements were conducted by using two designed D-dot probes, two uncompensated commercial mixed resistive-capacitive probes, and an uncompensated damped capacitive-voltage divider. The linearity of the two D-dot probes was checked for unloaded and loaded conditions by linear resistors and surge arresters. Residual voltage measured for an 11-kV and 33-kV surge arrester by two commercial mixed resistive-capacitive probes and the capacitive-voltage divider showed longer rise time, an initial inductive overshoot superimposed on the waveform, and a significant decay even before the current peak instant, contrary to those measured by the designed two D-dot probes.

Original languageEnglish
Pages (from-to)794-812
Number of pages19
JournalElectric Power Components and Systems
Volume39
Issue number8
DOIs
Publication statusPublished - Jan 2011

Keywords

  • D-dot probes
  • fast-front voltages
  • impulse-voltage measurement
  • surge arresters
  • voltage dividers

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering
  • Mechanical Engineering

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