Partial discharge pattern analysis of modelled insulation defects in transformer insulation

Conference paper (2006)

Authors

F Massingue External organisation
S. Meijer OLD High-Voltage Technology and Management
P Agoris OLD High-Voltage Technology and Management
J.J. Smit OLD High-Voltage Technology and Management
J Lopez-Roldan External organisation
Research Group
OLD High-Voltage Technology and Management
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Published Date

2006

Language

Undefined/Unknown

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Research Group

OLD High-Voltage Technology and Management

Abstract

This paper describes the first results from experimental investigations which have been carried out to study the partial discharge phenomena in power transformer insulation. Using different types of modeled insulation defects and ageing tests it is aimed to organize a database of known defects, which will be used for recognition of discharges of unknown sources of defects. Moreover, the first results of the investigation of degradation processes of pressboard during ageing are described. The experiments were carried out using the classical IEC 60270 method and the UHF method. Phase resolved patterns of the defects were collected for statistical analysis. Different defects were discriminated using cluster analysis.