Temporal behavior of electric field at triple junction and its relation to flashover of bridged vacuum gaps

1994 ◽  
Author(s):  
O. Yamamoto ◽  
T. Hara ◽  
H. Matsuura ◽  
Masayasu Hayashi ◽  
K. Yukimura
Keyword(s):  
Electric Field ◽  
Triple Junction ◽  
Temporal Behavior ◽  
Vacuum Gaps

scholarly journals Study of electric field stress on the surface contour and at the triple junction in three phase GIS with FGM spacer under the depression defect

2020 ◽  
Vol 0 (0) ◽  
Author(s):  
Janaki Pakalapati ◽  
Venkata N. Kumar Gundavarapu ◽  
Deepak Chowdary Duvvada ◽  
Sravana Kumar Bali
Keyword(s):  
Electric Field ◽  
Triple Junction ◽  
Dielectric Strength ◽  
Functionally Graded ◽  
Uniform Electric Field ◽  
Filler Materials ◽  
Field Stress ◽  
As Doping ◽  
Three Phase ◽  
Graded Material

AbstractNow days, the establishment of spacers is in wide usage in three-phase Gas Insulated Busduct (GIB) for providing mechanical support and better insulation to the conductors. The region of the intersection of SF6 gas, enclosure end and the spacer is one of the weakest links in GIB, so the major concentration is done on minimization of electric field stress at this junction by using Functionally Graded Material (FGM) technique. The other incidents of insulation failures are due to several defects like depression, delamination etc. reduces the dielectric strength of the spacers. In this paper, an FGM post type spacer has been designed for a three-phase GIB under depression and further electric field stress at Triple Junction (TJ) is reduced by introducing a metal insert (MI) nearer to the TJ. Several filler materials are used as doping materials for obtaining different permittivity values using FGM technique to achieve uniform electric field stress. Simulation is carried out for the designed spacer at various operating voltages with different types of FGM gradings. The effect of depression with different dimensions and positions is analyzed before and after inserting MI to the FGM post type spacer in three-phase GIB.

Analysis of the electric field behavior in the vicinity of a triple junction, using finite elements method computational simulations

2015 ◽  
Vol 74 ◽  
pp. 96-101 ◽  
Author(s):  
Guilherme Mauad Sant'Anna ◽  
Davi Sabbag Roveri ◽  
Hilton Henrique Bertan ◽  
Juliano Fujioka Mologni ◽  
Edmundo Silva Braga ◽  
...  
Keyword(s):  
Finite Elements ◽  
Electric Field ◽  
Triple Junction ◽  
Finite Elements Method ◽  
Computational Simulations ◽  
Field Behavior

scholarly journals Triple-Junction Effect and its Electric Field Relaxation in Three Dielectrics

2007 ◽  
Vol 127 (2) ◽  
pp. 59-64 ◽  
Author(s):  
Tadashi Kawamoto ◽  
Tadasu Takuma ◽  
Hisashi Goshima ◽  
Hiroyuki Shinkai ◽  
Hideo Fujinami
Keyword(s):  
Electric Field ◽  
Triple Junction

Controlling Factors of the Electric Field at the Triple Junction

2014 ◽  
Vol 31 (2) ◽  
pp. 027701
Author(s):  
Yang Liu ◽  
Xu-Dong Huang ◽  
Yu-Jun Feng ◽  
Hong-Liang He
Keyword(s):  
Electric Field ◽  
Triple Junction ◽  
Controlling Factors

Temporal behavior of surface charge accumulation in bridged vacuum gaps

1995 ◽  
Vol 2 (2) ◽  
pp. 292-298 ◽  
Author(s):  
O. Yamamoto ◽  
T. Hara ◽  
H. Matsuura ◽  
R. Hayashi
Keyword(s):  
Surface Charge ◽  
Temporal Behavior ◽  
Charge Accumulation ◽  
Vacuum Gaps

Flashover mechanisms of bridged vacuum gaps based on cathode electric field measurement

2015 ◽  
Vol 22 (1) ◽  
pp. 597-603 ◽  
Author(s):  
Hiroki Naruse ◽  
Hitoshi Saito ◽  
Masayuki Sakaki ◽  
Osamu Yamamoto
Keyword(s):  
Electric Field ◽  
Field Measurement ◽  
Electric Field Measurement ◽  
Vacuum Gaps
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