Title :
Electrical treeing-physical details obtained by pulse-sequence-analysis
Author :
Patsch, Rainer ; Hoof, Martin
Author_Institution :
Inst. of Mater. in Electr. Eng., Siegen Univ., Germany
Abstract :
The paper demonstrates that pulse-sequence-analysis allows a better insight into the phenomena which occur during tree initiation and growth in polyethylene. Tree growth in polyethylene is not a continuous monotonous process, but a phenomenon which incorporates different processes. Even with constant voltage load, one or another effect is predominant. After a period of very low discharge activity, a higher discharge activity (but still including discharge free intervals) may occur for some ten seconds. This may be followed by a longer period of very high discharge activity without any discharge free time intervals
Keywords :
electric breakdown; polyethylene insulation; trees (electrical); 10 s; constant voltage load; discharge free intervals; electrical treeing; high discharge activity; low discharge activity; polyethylene; pulse-sequence-analysis; tree growth; tree initiation; Current measurement; Degradation; Electrodes; Monitoring; Partial discharges; Polyethylene; Space charge; Statistical analysis; Stochastic processes; Voltage;
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.1995.523006
