Title :
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
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;
Journal_Title :
Dielectrics and Electrical Insulation, IEEE Transactions on
DOI :
10.1109/TDEI.2013.6678866
