Formation and influence analysis of electrolytic corrosion products on insulator surface

High Voltage ◽  
2021 ◽  
Author(s):  
Bin Cao ◽  
Zong Li ◽  
Daiming Yang ◽  
Lei Mu ◽  
Peng Liu ◽  
...  
Keyword(s):  
Corrosion Products ◽  
Influence Analysis ◽  
Insulator Surface ◽  
Electrolytic Corrosion

Monitoring and influence analysis of flashes on insulator surface of high current diode

2011 ◽  
Vol 23 (4) ◽  
pp. 1113-1116
Author(s):  
来定国 Lai Dingguo ◽  
张永民 Zhang Yongmin ◽  
邱爱慈 Qiu Aici ◽  
黄建军 Huang Jianjun ◽  
谢霖燊 Xie Linshen ◽  
...  
Keyword(s):  
High Current ◽  
Influence Analysis ◽  
Insulator Surface

Study on corrosion products removal in PWR primary circuit

1994 ◽  
pp. 142-144
Author(s):  
M. Koike ◽  
K. Matsukawa ◽  
D. Kojima ◽  
F. Fukuda ◽  
Y. Tsuzuki
Keyword(s):  
Corrosion Products ◽  
Primary Circuit

Analysis of the electrolytic corrosion in the railway line Albate-Chiasso

2020 ◽  
Author(s):  
Regina Lamedica ◽  
Alessandro Ruvio ◽  
Guido Guidi Buffarini ◽  
Nicola Carones ◽  
Cesare Cianfarani
Keyword(s):  
Railway Line ◽  
Electrolytic Corrosion

The Influence Analysis of Geodetic Accuracy on Artillery Fire

2011 ◽  
Vol 67 (2) ◽  
pp. 319-344
Author(s):  
신규용 ◽  
Oh,Myoungho ◽  
김두형 ◽  
이영수 ◽  
신내호
Keyword(s):  
Influence Analysis

Numerical Simulation of Leakage Current on Conductive Insulator Surface

2019 ◽  
Vol 8 (4) ◽  
pp. 9487-9492
Keyword(s):  
Numerical Simulation ◽  
Electric Field ◽  
Leakage Current ◽  
Method Of Lines ◽  
Electron Attachment ◽  
Negative Ions ◽  
Conduction Current ◽  
Insulator Surface ◽  
Finite Difference Approximations ◽  
Positive Ions

The outdoor insulator is commonly exposed to environmental pollution. The presence of water like raindrops and dew on the contaminant surface can lead to surface degradation due to leakage current. However, the physical process of this phenomenon is not well understood. Hence, in this study we develop a mathematical model of leakage current on the outdoor insulator surface using the Nernst Planck theory which accounts for the charge transport between the electrodes (negative and positive electrode) and charge generation mechanism. Meanwhile the electric field obeys Poisson’s equation. Method of Lines technique is used to solve the model numerically in which it converts the PDE into a system of ODEs by Finite Difference Approximations. The numerical simulation compares reasonably well with the experimental conduction current. The findings from the simulation shows that the conduction current is affected by the electric field distribution and charge concentration. The rise of the conduction current is due to the distribution of positive ion while the dominancy of electron attachment with neutral molecule and recombination with positive ions has caused a significant reduction of electron and increment of negative ions.

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