Reduction of electric-field intensification inside GIS by controlling spacer material and design

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

This paper presents finite-element simulation to calculate electric-field distribution inside coaxial gas-insulated switchgear and lines (GIS and GIL) for different solid spacer configurations, namely, disc, conical and post spacers. Several troubles and systems' outages have been reported worldwide due to insulation failures. Therefore, it is essential to minimize the electric-field intensification along their surfaces, especially at the triple point "electrode-spacer-gas", and hence enhance their reliability and increase their lifetime. Finite-element-based OPERA-2D software was used to calculate electric-field distribution by studying the effects of solid spacer dimensions and relative permittivity, application of functionally graded material (FGM) and the use of spacers with metalized cavities and shields.

Original languageEnglish
Pages (from-to)217-224
Number of pages8
JournalJournal of Electrostatics
Volume70
Issue number2
DOIs
Publication statusPublished - Apr 2012

Fingerprint

spacers
Geographic information systems
Gases
Electric fields
electric fields
Electrodes
Electric switchgear
Functionally graded materials
Software
Outages
Insulation
Permittivity
gases
insulation
permittivity
computer programs
life (durability)
cavities
electrodes
configurations

Keywords

  • Electric-field
  • Epoxy spacer
  • Functionally graded material (FGM)
  • Gas-insulated switchgear (GIS)
  • Permittivity
  • Triple point

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Electronic, Optical and Magnetic Materials
  • Surfaces, Coatings and Films
  • Condensed Matter Physics
  • Biotechnology

Cite this

Reduction of electric-field intensification inside GIS by controlling spacer material and design. / Metwally, I. A.

In: Journal of Electrostatics, Vol. 70, No. 2, 04.2012, p. 217-224.

Research output: Contribution to journalArticle

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