Title :
Effect of electrode geometry and cellulose particles on streamer initiation in oil under divergent ac fields
Author :
Van Top, T. ; Lesaint, O.
Author_Institution :
Lab. d´´Electrostat. et de Mater. Dielectr., CNRS, Grenoble, France
Abstract :
This paper describes a study of streamer inception in mineral oil under ac voltage conditions with rod or point electrodes. Positive and negative streamer inception frequencies versus voltage have been investigated in gaps up to 40 cm with different concentrations of cellulose particles. Streamer inception is determined by the field at the rod extremity. Initiation fields decrease with increasing rod radii and when cellulose particles are added
Keywords :
discharges (electric); insulating oils; insulator contamination; cellulose particles; divergent AC field; mineral oil; point electrode; rod electrode; streamer initiation; Breakdown voltage; Electrodes; Frequency; Geometry; Lubricating oils; Minerals; Oil insulation; Petroleum; Power transformer insulation; Testing;
Conference_Titel :
Properties and Applications of Dielectric Materials, 1997., Proceedings of the 5th International Conference on
Conference_Location :
Seoul
Print_ISBN :
0-7803-2651-2
DOI :
10.1109/ICPADM.1997.617557
