Analysis of water trees in underground HV cables using the KFUPM micro-PIXE facility

Scanning with the micro-PIXE technique was employed to analyze water trees in the XLPE insulation of a field-aged underground HV cable. X-ray spectra of bow tie and vented water trees, the inner and outer semiconductive compounds, and an insulation spot free from any water tree were acquired. Simult...

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Bibliographic Details
Published in:IEEE transactions on dielectrics and electrical insulation 1999-02, Vol.6 (1), p.95-99
Main Authors: Ahmed, M., Al-Ohali, M.A., Garwan, M.A., Al-Soufi, K., Narasimhan, S.
Format: Article
Language:English
Subjects:
Applied sciences
Cable insulation
Cables
Electric breakdown
Electric connection. Cables. Wiring
Electrical engineering. Electrical power engineering
Electrical insulation
Exact sciences and technology
Impurities
Insulation
Laboratories
Microscopy
Minerals
Power cables
Scanning
Sea measurements
Spectra
Trees
Trees - insulation
Underground
Underground power cables
Underwater cables
Various equipment and components
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Summary:Scanning with the micro-PIXE technique was employed to analyze water trees in the XLPE insulation of a field-aged underground HV cable. X-ray spectra of bow tie and vented water trees, the inner and outer semiconductive compounds, and an insulation spot free from any water tree were acquired. Simultaneously, two-dimensional elemental distribution profiles across the water trees were also measured. Various trace element impurities were identified in the analyzed spots and their possible sources are suggested. Differences in elemental distribution profiles in the scanned areas were observed and have been discussed on the basis of the mechanism of incorporation of these elements into the insulation. This study demonstrates the effectiveness of the micro-PIXE facility available in this laboratory in analyzing water trees in underground power cables.
ISSN:1070-9878
1558-4135
DOI:10.1109/94.752015