scholarly journals Influence of Fine Metal Particles on Surface Discharge Characteristics of Outdoor Insulators

Energies ◽  
2016 ◽  
Vol 9 (2) ◽  
pp. 87 ◽  
Author(s):  
Yong Liu ◽  
Bowen Xia ◽  
Boxue Du ◽  
Masoud Farzaneh
Keyword(s):  
Metal Particles ◽  
Surface Discharge ◽  
Discharge Characteristics ◽  
Fine Metal Particles ◽  
Outdoor Insulators

scholarly journals Tribofilms Produced by Supply of Fine Metal Particles in Vacuum

2011 ◽  
Vol 6 (1) ◽  
pp. 50-54
Author(s):  
Hirotaka Kato ◽  
Akihiro Takimi ◽  
Minoru Umemoto
Keyword(s):  
Metal Particles ◽  
Fine Metal Particles

Motion and discharge characteristics of metal particles existing in GIS under DC voltage

2017 ◽  
Vol 24 (2) ◽  
pp. 876-885 ◽  
Author(s):  
Haoyang You ◽  
Qiaogen Zhang ◽  
Can Guo ◽  
Puming Xu ◽  
Jingtan Ma ◽  
...  
Keyword(s):  
Metal Particles ◽  
Discharge Characteristics ◽  
Dc Voltage

Discharge and Flashover Behavior in Oil-Paper

2020 ◽  
pp. 105-128
Keyword(s):  
Electric Field ◽  
Operating Conditions ◽  
Surface Discharge ◽  
Discharge Characteristics ◽  
Dc Voltage ◽  
Composite Field ◽  
Field Distortion ◽  
Lightning Impulse ◽  
Creeping Discharge ◽  
Paper Insulation

Due to special operating conditions, the valve side bushing of the converter transformer connected to the converter valve is subject to complex voltage excitation, including DC voltage, AC/DC composite voltage, lightning impulse overvoltage, or composite voltage of operating overvoltage and DC. Under the action of this complicated electric field, the oil-paper insulation of the valve-side bushing of the converter transformer is prone to electric field distortion due to charge accumulation, which causes a surface discharge, which will seriously cause the edge breakdown. At the same time, since the temperature in the converter transformer rises due to a large amount of loss during the operation of the transformer, creeping discharge is more likely to occur under the electrothermal composite field. Hence, it is significant to carry out research on the surface discharge characteristics of the oil-paper insulation on the valve side of the converter transformer under the electrothermal composite field.

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