Computer simulation on formation of space charge packets in XLPE films

Author

Kaneko, K. ; Mizutani, T. ; Suzuoki, Y.

Author_Institution

Graduate Sch. of Eng., Nagoya Univ., Japan

Volume

6

Issue

2

fYear

1999

fDate

4/1/1999 12:00:00 AM

Firstpage

152

Lastpage

158

Abstract

The packet-like space-charge behaviour in an oxidized crosslinked polyethylene (XLPE) film doped with antioxidant is discussed through computer simulation. The model is based on the following assumptions, (1) both electrons and holes are injected from the electrodes and they migrate to the opposite electrodes by hopping transport, (2) holes are also supplied from acceptor sites depending on the field, (3) the holes are excited to the hopping level only via an intermediate level. In this model, a space-charge packet is not caused by the excess of mobile electrons but by the deficiency in mobile holes. The ionized acceptors left behind by hole migration form an apparent negative space charge packet and it propagates towards the anode as the high field region moves

Keywords

XLPE insulation; hopping conduction; impurity states; power cable insulation; space charge; XLPE films; acceptor sites; antioxidant dopant; apparent negative space charge packet; hole migration; hopping transport; intermediate level; space charge packets; Anodes; Cables; Charge carrier processes; Computer simulation; Electrodes; Impurities; Plastic films; Polyethylene; Space charge; Surface resistance;

fLanguage

English

Journal_Title

Dielectrics and Electrical Insulation, IEEE Transactions on

Publisher

ieee

ISSN

1070-9878

Type

jour

DOI

10.1109/94.765904

Filename

765904