Computer models for estimating the breakdown voltage of air in uniform and non-uniform fields at 30 kHz

Doeg Rodriguez, Ravi S. Gorur, Peder Hansen

Research output: Contribution to journalArticle

Abstract

This paper reports on the development of models to estimate the breakdown voltage of air in uniform and non-uniform gap configurations for the very low frequency (VLF) and low-frequency (LF) bands. The breakdown voltage of air at VLF/LF is considerably lower and has a larger dependency on ambient humidity than at 60 Hz. Both characteristics have been explained by increased space charge formation at the higher frequencies. The models are shown to be useful for predicting breakdown voltages at VLF/LF for uniform field gap spacings up to 125 mm and non-uniform field gap spacings up to 4 m.

Original languageEnglish (US)
Pages (from-to)548-558
Number of pages11
JournalEuropean Transactions on Electrical Power
Volume22
Issue number4
DOIs
StatePublished - May 1 2012

Keywords

  • air
  • electric breakdown
  • humidity
  • low frequency
  • partial discharge
  • very low frequency

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

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