Status review on partial discharge measurement techniques in gas-insulated switchgear/lines

I. A. Metwally*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

110 Citations (Scopus)


Widespread applications of pressurized SF6 gas and its mixtures as insulating media in many electric power apparatus are the result of recent advances in modern technologies. Partial discharge (PD) is a natural phenomenon occurring in such gas-insulated electric power systems, which invariably contains tiny defects and non-uniformities. The quality of an electrical insulation system can be characterized by PD measurements, which serve to identify the type and status of a defect. A review on the insulation and PD monitoring for gas-insulated switchgear/transmission lines (GIS/GITL) is presented with focusing on the measurement techniques. Since PD monitoring systems can generate a large amount of data, therefore computer-aided interpretation and classification of defects are also discussed.

Original languageEnglish
Pages (from-to)25-36
Number of pages12
JournalElectric Power Systems Research
Issue number1
Publication statusPublished - Apr 2004


  • Detection techniques
  • Gas-insulated switchgear/lines
  • PD data interpretation
  • Partial discharge

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering


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