Direct observation of time-dependent space charge profiles in XLPE cable under high electric fields

Author

Hozumi, N. ; Suzuki, H. ; Okamoto, T. ; Watanabe, K. ; Watanabe, A.

Author_Institution

Central Res. Inst. of Electr. Power Ind., Japan

Volume

1

Issue

6

fYear

1994

fDate

12/1/1994 12:00:00 AM

Firstpage

1068

Lastpage

1076

Abstract

Space charge distribution was measured, applying an electric field of >1 MV/cm to 3 mm thick XLPE cable insulation. Improving the conventional pulse electro-acoustic method, a new method was developed to measure space charge when applying HV to cables. Under high field, hetero charges were formed soon after voltage application, followed by an injection from the cathode. Then intermittent injections of charge packets from the anode took place. The space charge distribution kept changing without becoming stabilized. A simulation was done assuming hysteresis of the injection characteristics. The observed intermittent injection near the anode was qualitatively reproduced using computer simulation

Keywords

XLPE insulation; power cable insulation; space charge; 3 mm; XLPE cable; cable insulation; charge packets; hetero charges; high electric fields; injection characteristics; intermittent injection; time-dependent space charge profiles; Anodes; Cable insulation; Cables; Charge measurement; Current measurement; Electric variables measurement; Pulse measurements; Pulsed electroacoustic methods; Space charge; Thickness measurement;

fLanguage

English

Journal_Title

Dielectrics and Electrical Insulation, IEEE Transactions on

Publisher

ieee

ISSN

1070-9878

Type

jour

DOI

10.1109/94.368656

Filename

368656