Risk assessment on defects in GIS based on PD diagnostics

Author

Schichler, U. ; Koltunowicz, Wojciech ; Endo, F. ; Feser, K. ; Giboulet, A. ; Girodet, Alain ; Hama, Hiromitsu ; Hampton, Bryan ; Kranz, H.-G. ; Lopez-Roldan, Jose ; Lundgaard, L. ; Meijer, Sebastiaan ; Neumann, Carsten ; Okabe, Shigemitsu ; Pearson, Jame

Volume

20

Issue

6

fYear

2013

fDate

Dec-13

Firstpage

2165

Lastpage

2172

Abstract

The paper, prepared by CIGRE WG D1.03 (TF 09), presents the guidelines for risk assessment procedure on defects in GIS based on PD diagnostics. The procedure, described in detail in CIGRE Technical Brochure 525, starts with sensitive PD measurement to detect the critical defects and follows with identification of the type of the defect and its location inside the GIS. This information taken together with other essential data from laboratory measurements, manufacturer´s experience, design aspects and trend analysis of the PD activity, are the base for the estimation of the criticality of the defects. Finally, the risk assessment is performed based on the estimated dielectric failure probability and failure consequences that can be different in case of on-site testing or in service activity.

Keywords

failure analysis; gas insulated substations; partial discharge measurement; probability; risk management; CIGRE Technical Brochure 525; CIGRE WG D1.03; GIS; PD diagnostics; critical defects; estimated dielectric failure probability; failure consequences; risk assessment procedure; sensitive PD measurement; Breakdown voltage; Dielectrics; Gas insulation; Partial discharges; Risk management; Voltage measurement; Gas insulated substation; defects; diagnostics and risk assessment; partial discharge measurements;

fLanguage

English

Journal_Title

Dielectrics and Electrical Insulation, IEEE Transactions on

Publisher

ieee

ISSN

1070-9878

Type

jour

DOI

10.1109/TDEI.2013.6678866

Filename

6678866