Electrodes and charge injection in low-density polyethylene using the pulsed electroacoustic technique

The effects of electrode materials on space charge formation in low-density polyethylene (LDPE) have been investigated experimentally using the pulsed electroacoustic (PEA) technique. Common electrode materials used in either the laboratory or power cable industry were selected, i.e. aluminum, gold...

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Bibliographic Details
Published in:IEEE transactions on dielectrics and electrical insulation 2001-12, Vol.8 (6), p.867-873
Main Authors: Chen, G., Tay, T.Y.G., Davies, A.E., Tanaka, Y., Takada, T.
Format: Article
Language:English
Subjects:
Aerospace industry
Carbon
Charge injection
Electroacoustics
Electrode materials
Electrodes
Laboratories
Metals industry
Organic materials
Polyethylene
Polyethylenes
Power cables
Pulsed electroacoustic methods
Space charge
Stress
Stresses
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Summary:The effects of electrode materials on space charge formation in low-density polyethylene (LDPE) have been investigated experimentally using the pulsed electroacoustic (PEA) technique. Common electrode materials used in either the laboratory or power cable industry were selected, i.e. aluminum, gold and carbon loaded crosslinked polyethylene (XLPE), and space charge accumulation after the application of high electric stress was monitored. Experimental results demonstrated that charge injection processes take place in all cases once the applied stress has exceeded a threshold. However the amount of charge, and the polarity of the dominant injected charges showed a significant dependence on the electrode materials under the same applied electric stress.
ISSN:1070-9878
1558-4135
DOI:10.1109/94.971439