Title :
The initiation and growth of AC tree in polyethylene
Author :
Hozumi, Naohiro ; Okamoto, Tatsuki
Author_Institution :
Central Res. Inst. of Electr. Power Ind., Tokyo, Japan
Abstract :
An electrical tree was generated from a semiconducting needle electrode in polyethylene. The process form the initiation to growth up to a few 10s of microns was observed and recorded by an optical microscope simultaneously with the partial discharge measurement. The results on several samples were statistically analyzed to further the understanding of the relationship among tree growth, partial discharge, and branching. Based on the results, a possible qualitative model of tree initiation and initial tree growth is presented
Keywords :
electric breakdown of solids; optical microscopy; organic insulating materials; partial discharges; polymers; AC tree growth; branching; electrical tree; optical microscope; partial discharge measurement; polyethylene; semiconducting needle electrode; tree initiation model; Electrodes; Grounding; Needles; Optical microscopy; Partial discharge measurement; Partial discharges; Polyethylene; Semiconductivity; Statistical analysis; Transmission electron microscopy;
Conference_Titel :
Conduction and Breakdown in Solid Dielectrics, 1989., Proceedings of the 3rd International Conference on
Conference_Location :
Trondheim
DOI :
10.1109/ICSD.1989.69256
