Space charge dynamics in oil-paper insulation under the combination influence of moisture and temperature

2012 ◽  
Author(s):  
Jian Hao ◽  
Ruijin Liao ◽  
Lijun Yang
Keyword(s):  
Space Charge ◽  
Charge Dynamics ◽  
Paper Insulation

Space charge dynamics at the physical interface in oil-paper insulation under DC voltage

2015 ◽  
Vol 22 (3) ◽  
pp. 1739-1746 ◽  
Author(s):  
Meng Huang ◽  
Yuanxiang Zhou ◽  
Weijiang Chen ◽  
Licheng Lu ◽  
Fubao Jin ◽  
...  
Keyword(s):  
Space Charge ◽  
Dc Voltage ◽  
Charge Dynamics ◽  
Paper Insulation

Influence of moisture on space charge dynamics in multilayer oil-paper insulation

2012 ◽  
Vol 19 (4) ◽  
pp. 1456-1464 ◽  
Author(s):  
Jian Hao ◽  
George Chen ◽  
Ruijin Liao ◽  
Lijun Yang ◽  
Chao Tang
Keyword(s):  
Space Charge ◽  
Charge Dynamics ◽  
Paper Insulation

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.

Space charge phenomena in oil-paper insulation materials under high voltage direct current

2009 ◽  
Vol 67 (2-3) ◽  
pp. 417-421 ◽  
Author(s):  
Yuanxiang Zhou ◽  
Yunshan Wang ◽  
Guangfan Li ◽  
Ninghua Wang ◽  
Yingyan Liu ◽  
...  
Keyword(s):  
Space Charge ◽  
High Voltage ◽  
Direct Current ◽  
Insulation Materials ◽  
High Voltage Direct Current ◽  
Paper Insulation
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