Title :
TSDC characteristics of extruded polymer insulated cables
Author :
Braun, J.M. ; Densley, R.J. ; Younsi, A. ; Wintle, H.J.
Author_Institution :
Ontario Hydro, Toronto, Ont., Canada
Abstract :
Four XLPE and TRXLPE insulated 15 kV cables were characterized using the thermally stimulated discharge currents (TSDC) technique in order to investigate the effect of the roughness and cleanliness of the semiconductive shield/insulation interface. The XLPE cables, Cable A and Cable B, had nominally the same compound formulation. However, the materials were reportedly cleaner for Cable B compared to Cable A. The cables were tested in the 0 to +/-140 kV voltage range. Cable B, gave a lower TSDC at all voltages when compared to Cable A, at positive and negative polarization. In addition, two 15 kV TRXLPE cables were tested. Cable C has a conventional conductor shield compound while cable D had a supersmooth conductor shield. Some possible interpretations of the TSDC responses are presented
Keywords :
XLPE insulation; insulation testing; interface structure; power cable insulation; thermally stimulated currents; -140 to 140 kV; 15 kV; TRXLPE insulated cables; TSDC characteristics; TSDC response; XLPE insulated cables; cleanliness; extruded polymer insulated cables; negative polarization; positive polarization; roughness; semiconductive shield/insulation interface; supersmooth conductor shield; thermally stimulated discharge currents; Cable insulation; Cables; Conducting materials; Conductors; Dielectrics and electrical insulation; Materials testing; Plastic insulation; Polarization; Polymers; Trees - insulation;
Conference_Titel :
Conduction and Breakdown in Solid Dielectrics, 1995. ICSD'95., Proceedings of the 1995 IEEE 5th International Conference on
Conference_Location :
Leicester
Print_ISBN :
0-7803-2040-9
DOI :
10.1109/ICSD.1995.522944
