Conduction and partial discharge activity in HVDC cable insulation of lapped polypropylene films

Author

Ildstad, Erling ; Haave, Terje

Author_Institution

Dept. of Electr. Power Eng., Norwegian Univ. of Sci. & Technol., Trondheim, Norway

fYear

2001

fDate

6/23/1905 12:00:00 AM

Firstpage

137

Lastpage

140

Abstract

The purpose of the work presented here is to characterise polymeric HVDC cable insulation consisting of lapped thin film polypropylene with respect to DC current conduction and partial discharge activity in air filled butt gaps. The PD activity was found to strongly increase with increasing temperature and applied electric stress. The discharge frequency decreased with time after voltage application and the effect of the void size was found to be of minor importance. These observations agree very well with the proposed theory stating that the discharge frequency will be proportional to the current flowing through the insulation

Keywords

electrical conductivity; organic insulating materials; partial discharges; polymer films; power cable insulation; DC current conduction; DC voltage; HVDC cable insulation; air filled butt gaps; applied electric stress; discharge frequency; lapped polypropylene films; partial discharge activity; void size; voltage endurance tests; Cable insulation; Capacitance; Conductive films; HVDC transmission; Partial discharges; Plastic insulation; Polymer films; Space charge; Stress; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Solid Dielectrics, 2001. ICSD '01. Proceedings of the 2001 IEEE 7th International Conference on

Conference_Location

Eindhoven

Print_ISBN

0-7803-6352-3

Type

conf

DOI

10.1109/ICSD.2001.955542

Filename

955542