Title :
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
fDate :
6/23/1905 12:00:00 AM
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;
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
DOI :
10.1109/ICSD.2001.955542
