Research on Charge Accumulation Characteristics by PEA Method and Q(t) Method

2021 ◽  
Vol 70 ◽  
pp. 1-9
Author(s):  
Hanwen Ren ◽  
Tatsuo Takada ◽  
Hiroaki Uehara ◽  
Shinya Iwata ◽  
Qingmin Li
Keyword(s):  
Charge Accumulation ◽  
Accumulation Characteristics

scholarly journals Acetylated SEBS Enhanced DC Insulation Performances of Polyethylene

Polymers ◽  
2019 ◽  
Vol 11 (6) ◽  
pp. 1033 ◽  
Author(s):  
Wei Dong ◽  
Xuan Wang ◽  
Zaixing Jiang ◽  
Bo Tian ◽  
Yuguang Liu ◽  
...  
Keyword(s):  
Dielectric Properties ◽  
Field Strength ◽  
Space Charge ◽  
Aromatic Compounds ◽  
Breakdown Strength ◽  
Charge Accumulation ◽  
New Approach ◽  
Functional Units ◽  
Poly Ethylene ◽  
Accumulation Characteristics

Acetophenone can significantly improve the dielectric properties of polyethylene (PE) insulation materials. However, it easily migrates from the PE due to its poor compatibility with the material, which limits its application. In this paper, the functional units of acetophenone were modified in polystyrene-b-poly(ethylene-co-butylene)-b-polystyrene (SEBS) by an acetylation reaction, and SEBS was used as the carrier to inhibit the migration of acetophenone. The number of functional units in the acetylated SEBS (Ac-SEBS) was measured by 1H NMR and the effect of the acetylation degree of SEBS on its compatibility with PE was studied. Meanwhile, the effects of Ac-SEBS on PE’s direct current (DC) breakdown strength and space charge accumulation characteristics were investigated. It is demonstrated that Ac-SEBS can significantly improve the field strength of the DC breakdown and inhibit the accumulation of space charge in the PE matrix. This work provides a new approach for the application of aromatic compounds as voltage stabilizers in DC insulation cable materials.

Space Charge Accumulation Characteristics in Fluorinated Insulating Material under DC High Stress

2018 ◽  
Vol 138 (4) ◽  
pp. 163-170 ◽  
Author(s):  
Takahiro Nagase ◽  
Shugo Yoshida ◽  
Takuma Mori ◽  
Hiroaki Miyake ◽  
Kimio Hijikata ◽  
...  
Keyword(s):  
Space Charge ◽  
High Stress ◽  
Charge Accumulation ◽  
Insulating Material ◽  
Accumulation Characteristics
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