scholarly journals Study of Space Charge Dynamics in Oil and Pressboard Composite System under Different Polarity Reversal Voltages

2017 ◽  
pp. 1109
Keyword(s):  
Space Charge ◽  
Composite System ◽  
Polarity Reversal ◽  
Charge Dynamics

Space charge dynamics in double-layered insulation cable under polarity reversal voltage

2020 ◽  
Vol 27 (2) ◽  
pp. 622-630 ◽  
Author(s):  
Jiming Chen ◽  
Ying Gao ◽  
Mingxiao Zhu ◽  
Jiacai Li ◽  
Qianyu Yu
Keyword(s):  
Space Charge ◽  
Polarity Reversal ◽  
Charge Dynamics

Space charge dynamics in epoxy resin impregnated crepe paper multilayer under voltage polarity reversal

2019 ◽  
Vol 26 (1) ◽  
pp. 253-260 ◽  
Author(s):  
Hongliang Zhang ◽  
Peng Liu ◽  
Hua Feng ◽  
Siyu Zhang ◽  
Ding Li ◽  
...  
Keyword(s):  
Space Charge ◽  
Epoxy Resin ◽  
Polarity Reversal ◽  
Charge Dynamics ◽  
Voltage Polarity

scholarly journals Space charge dynamics in epoxy resin under voltage polarity reversal at various temperatures

High Voltage ◽  
2020 ◽  
Author(s):  
Peng Liu ◽  
Hongliang Zhang ◽  
Siyu Zhang ◽  
Xialin Su ◽  
Zongliang Xie ◽  
...  
Keyword(s):  
Space Charge ◽  
Epoxy Resin ◽  
Polarity Reversal ◽  
Charge Dynamics ◽  
Voltage Polarity

Terahertz Polarization and Space Charge Dynamics in Semiconductor Nanoparticles

2021 ◽  
Author(s):  
Zhijing Hu ◽  
Zi Wang ◽  
Yanlin Li ◽  
Tao Shen ◽  
Ming Yan ◽  
...  
Keyword(s):  
Space Charge ◽  
Semiconductor Nanoparticles ◽  
Charge Dynamics

scholarly journals Effect of Temperature on Space Charge Distribution of Oil–Paper Insulation under DC and Polarity Reversal Voltage

Energies ◽  
2018 ◽  
Vol 11 (9) ◽  
pp. 2271 ◽  
Author(s):  
Qingguo Chen ◽  
Jinfeng Zhang ◽  
Minghe Chi ◽  
Peng Tan ◽  
Wenxin Sun
Keyword(s):  
Electric Field ◽  
Space Charge ◽  
Electric Field Distribution ◽  
Operating Conditions ◽  
Polarity Reversal ◽  
Effect Of Temperature ◽  
Slow Decay ◽  
Voltage Polarity ◽  
Field Distortion ◽  
Paper Insulation

The electric field distortion caused by space charge is an important factor affecting the operation reliability of oil–paper insulation in a converter transformer. To study the accumulation and decay characteristics of the space charge within oil-impregnated pressboard under DC and polarity reversal voltage, and consider the possible operating conditions of the converter transformer, the space charge behavior of oil-impregnated pressboard was measured by the pulsed electro-acoustic (PEA) method in the temperature range from −20 °C to 60 °C. The effect of temperature on the accumulation and decay characteristics of space charge is also analyzed. The space charge accumulated within the pressboard at low temperature is mainly homocharge injected by the electrode, while heterocharge formed by ion dissociation counteracts some of the homocharge at high temperature. Thus, the space charge of pressboard first increases, then decreases, with an increase in temperature. However, slow decay of the space charge causes severe distortion of the electric field distribution in the pressboard during voltage polarity reversal.

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