Risk assessment of free moving particles in GIS using spectral and partial discharge analysis

Author

Meijer, Sander ; Zoetmulder, Robert G A ; Smit, Johan J. ; Girodet, Alain

Author_Institution

Fac. of Inf. Technol. & Syst., Delft Univ. of Technol., Netherlands

fYear

2002

fDate

7-10 Apr 2002

Firstpage

403

Lastpage

406

Abstract

Moving particles occurring in SF₆ gas-insulated switchgear can result in breakdown of the gaseous insulation. Therefore, it is important to trace such defects in time and to determine their risk for a possible breakdown. For this risk analysis process, the following four steps have to be taken into account: detection, location, identification and risk assessment of the defect. In this contribution, the UHF method has been used to detect insulation defects. Time-of-flight measurements can be used to locate the defect. The identification is an essential part for risk analysis of defects. Different methods can be applied based on spectral analysis or phase-resolved PD pattern analysis.

Keywords

SF₆ insulation; UHF measurement; fault location; gas insulated switchgear; insulation testing; partial discharge measurement; risk management; spectral analysis; switchgear testing; SF₆; SF₆ gas-insulated switchgear; UHF method; defect detection; defect identification; defect location; gaseous insulation breakdown; insulation defects; phase-resolved PD pattern analysis; risk analysis; risk assessment; spectral analysis; time-of-flight measurements; Electric breakdown; Gas insulation; Geographic Information Systems; Partial discharges; Pattern analysis; Risk analysis; Risk management; Spectral analysis; Switchgear; UHF measurements;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Insulation, 2002. Conference Record of the 2002 IEEE International Symposium on

Print_ISBN

0-7803-7337-5

Type

conf

DOI

10.1109/ELINSL.2002.995961

Filename

995961