Title :
Barrier effect in dielectrics
Author :
Lebedev, S.M. ; Gefle, O.S. ; Agoris, D.P. ; Pokholkov, Yu.P.
Author_Institution :
Tomsk Polytech. Univ., Russia
Abstract :
This paper presents results of the barrier effect study in gaseous and solid dielectrics in divergent and quasi-uniform electric fields. The influence of various factors such as the position of the barrier in gap, the permittivity and the conductivity change both on the breakdown voltage (Vb) and breakdown time (τb) in the uniform field and on the tree-initiation time (τi) in the divergent field was investigated. Application of barriers with high permittivity may result in a significant increase in τb. An analysis of existing models of the barrier effect is presented
Keywords :
electric breakdown; gaseous insulation; permittivity; trees (electrical); barrier effect; breakdown time; breakdown voltage; conductivity; dielectrics; divergent and quasi-uniform electric fields; gaseous dielectrics; high permittivity; permittivity; quasi-uniform electric fields; solid dielectrics; tree-initiation time; Breakdown voltage; Conductivity; Dielectric breakdown; Dielectric liquids; Dielectric materials; Dielectrics and electrical insulation; Gases; Needles; Permittivity; Solids;
Conference_Titel :
Properties and Applications of Dielectric Materials, 2000. Proceedings of the 6th International Conference on
Conference_Location :
Xi´an
Print_ISBN :
0-7803-5459-1
DOI :
10.1109/ICPADM.2000.876373
