Experience with PD measurements in GIS maintenance concept

Conference paper (2008)

Authors

S. Meijer OLD High-Voltage Technology and Management
J.J. Smit OLD High-Voltage Technology and Management
AJLM Kanters External organisation
Research Group
OLD High-Voltage Technology and Management
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Published Date

2008

Language

Undefined/Unknown

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Research Group

OLD High-Voltage Technology and Management

Abstract

Since the early nineties, ultra-high-frequency (UHF) partial discharge (PD) measurements are being applied to SF6 gas-insulated equipment. Over the years, PD measurements revealed the presence of some insulation defects in the 380 kV GIS. The measuring results have been compared to laboratory experiments. Moreover, locating was possible as well. Cigre TF D1.03.09 has been working on a risk-assessment procedure to assess the risk for a failure for insulation defects, based on PD measurements. So this procedure is only applicable to insulation defects that give detectable PD activity. The paper will show examples of the application of this risk assessment method on the different detected PD sources. Finally the actions initiated by the DSO/TSO for these analyzed insulation defects will be described.