Title :
Electrical treeing inception and growth in XLPE in presence of harmonics
Author :
Guastavino, F. ; Centurioni, L. ; Dardano, A. ; Torello, E.
Author_Institution :
Dept. of Electr. Eng., Genova Univ., Italy
Abstract :
This work is focused on the study of electrical treeing phenomena in polymeric materials, commonly employed in medium voltage cable insulation, when voltage harmonics are present. Specimens of cross-linked polyethylene (XLPE) have been brought to breakdown by the application of high voltages having a different harmonic content. The inception and the growth of electrical treeing was observed and the duration of each specimen was recorded. The durations were then put in relation with the voltage amplitude and with the partial discharge (PD) activity measured during the tests. In certain cases the output suggested that PD were not the main degradation factor.
Keywords :
XLPE insulation; cable insulation; harmonics; partial discharges; polymers; trees (electrical); XLPE breakdown; XLPE electrical treeing growth; XLPE electrical treeing inception; cross-linked polyethylene; degradation factor; medium voltage cable insulation; partial discharge activity; polymeric materials; voltage amplitude; voltage harmonics; Breakdown voltage; Cable insulation; Degradation; Medium voltage; Partial discharge measurement; Partial discharges; Polyethylene; Polymers; Testing; Trees - insulation;
Conference_Titel :
Solid Dielectrics, 2004. ICSD 2004. Proceedings of the 2004 IEEE International Conference on
Print_ISBN :
0-7803-8348-6
DOI :
10.1109/ICSD.2004.1350366
