Research on the charge transportation mechanism of cross-linked polyethylene (XLPE) with Al electrode and semi-conductive screen

To study the effects of the different electrodes on the charge transport mechanism in XLPE, the conductive currents of cross-linked polyethylene (XLPE) with Al electrode and semi-conductive screen have been compared. And the currents of the two kinds of samples at low electric field, which are teste...

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Bibliographic Details
Published in:IOP conference series. Materials Science and Engineering 2019-02, Vol.479 (1), p.12033
Main Authors: Lin, L, Chen, M Y, Yu, B W
Format: Article
Language:English
Subjects:
Charge transport
Cross-linked polyethylene
Direct current
Electric fields
Electrode materials
Electrodes
High voltages
Ohm's Law
Polyethylene
Space charge
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Summary:To study the effects of the different electrodes on the charge transport mechanism in XLPE, the conductive currents of cross-linked polyethylene (XLPE) with Al electrode and semi-conductive screen have been compared. And the currents of the two kinds of samples at low electric field, which are tested after not injecting and injecting space charge. The transportation mechanism of XLPE with Al electrode under high voltage is proved to not obey the Ohm's law, but also not obey the space charge limited-current (SCLC) mechanism. The transportation mechanism of XLPE with semi-conductive current is proved to obey SCLC. The charge transport mechanism traditional criterion of XLPE is not very precise. So the study of high voltage direct current (HVDC) in laboratory should take the electrode materials of testing samples into consideration, and the results of the samples with the different electrodes should be analyzed and compared.
ISSN:1757-8981
1757-899X
1757-899X
DOI:10.1088/1757-899X/479/1/012033