High-field dissipation current waveform in e-beam-irradiated XLPE film at high temperature

We developed a detection method of ac dissipation current waveforms combined with a fast rising ac ramp voltage application as a new technique to evaluate the high-field dielectric properties and the dissipation current waveform over a very short time range. This measurement was carried out on elect...

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Bibliographic Details
Published in:IEEE transactions on dielectrics and electrical insulation 1996-06, Vol.3 (3), p.375-379
Main Authors: Nagao, M., Kosaki, M., Tohyama, K., Tokoro, T.
Format: Article
Language:English
Subjects:
Applied sciences
Dielectric measurements
Dielectrics and electrical insulation
Electric fields
Electrical, magnetic and optical properties
Electrodes
Exact sciences and technology
Organic polymers
Partial discharge measurement
Physicochemistry of polymers
Plastic films
Polyethylene
Polymer films
Properties and characterization
Temperature dependence
Voltage
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Summary:We developed a detection method of ac dissipation current waveforms combined with a fast rising ac ramp voltage application as a new technique to evaluate the high-field dielectric properties and the dissipation current waveform over a very short time range. This measurement was carried out on electron beam irradiated crosslinked polyethylene film. At high temperature the high field tan /spl delta/ and ac dissipation current show nonlinear electric field dependence and the dissipation current during decreasing field becomes larger than that during increasing field, suggesting the contribution of carrier injection from electrodes. The dissipation current waveforms in the high temperature region show the peak in the first part of each half cycle of a full waveform, and fast decrease in the latter part. This result is probably due to the hetero and home space charge formation caused by the injected carriers from the electrode.
ISSN:1070-9878
1558-4135
DOI:10.1109/94.506209