scholarly journals Characterization of argon direct-current glow discharge with a longitudinal electric field applied at ambient air

2014 ◽  
Vol 4 (1) ◽  
Author(s):  
Weiman Jiang ◽  
Jie Tang ◽  
Yishan Wang ◽  
Wei Zhao ◽  
Yixiang Duan
Keyword(s):  
Glow Discharge ◽  
Electric Field ◽  
Direct Current ◽  
Ambient Air ◽  
Longitudinal Electric Field

scholarly journals Electrical Characterization of a New Crosslinked Copolymer Blend for DC Cable Insulation

Energies ◽  
2020 ◽  
Vol 13 (6) ◽  
pp. 1434 ◽  
Author(s):  
Sarath Kumara ◽  
Xiangdong Xu ◽  
Thomas Hammarström ◽  
Yingwei Ouyang ◽  
Amir Masoud Pourrahimi ◽  
...  
Keyword(s):  
Electrical Properties ◽  
Electric Field ◽  
Surface Potential ◽  
High Voltage ◽  
Direct Current ◽  
Electrical Characterization ◽  
Copolymer Blend ◽  
New Material ◽  
Potential Decay

To design reliable high voltage cables, clean materials with superior insulating properties capable of operating at high electric field levels at elevated temperatures are required. This study aims at the electrical characterization of a byproduct-free crosslinked copolymer blend, which is seen as a promising alternative to conventional peroxide crosslinked polyethylene currently used for high voltage direct current cable insulation. The characterization entails direct current (DC) conductivity, dielectric response and surface potential decay measurements at different temperatures and electric field levels. In order to quantify the insulating performance of the new material, the electrical properties of the copolymer blend are compared with those of two reference materials; i.e., low-density polyethylene (LDPE) and peroxide crosslinked polyethylene (XLPE). It is found that, for electric fields of 10–50 kV/mm and temperatures varying from 30 °C to 70 °C, the DC conductivity of the copolymer blend is in the range of 10−17–10−13 S/m, which is close to the conductivity of crosslinked polyethylene. Furthermore, the loss tangent of the copolymer blend is about three to four times lower than that of crosslinked polyethylene and its magnitude is on the level of 0.01 at 50 °C and 0.12 at 70 °C (measured at 0.1 mHz and 6.66 kV/mm). The apparent conductivity and trap density distributions deduced from surface potential decay measurements also confirmed that the new material has electrical properties at least as good as currently used insulation materials based on XLPE (not byproduct-free). Thus, the proposed byproduct-free crosslinked copolymer blend has a high potential as a prospective insulation medium for extruded high voltage DC cables.

Characterization of Tantalum Films on Analytical Surfaces: Insights into Sputtering of Nonconductors in a Direct-Current Glow Discharge Using Secondary Cathodes

1999 ◽  
Vol 53 (3) ◽  
pp. 266-277 ◽  
Author(s):  
David M. Wayne ◽  
Roland K. Schulze ◽  
Carl Maggiore ◽  
D. Wayne Cooke ◽  
George Havrilla
Keyword(s):  
Glow Discharge ◽  
Direct Current ◽  
Tantalum Films

Characterization of a Direct-Current Glow Discharge Plasma Actuator in Low-Pressure Supersonic Flow

AIAA Journal ◽  
2007 ◽  
Vol 45 (7) ◽  
pp. 1596-1605 ◽  
Author(s):  
Jichul Shin ◽  
V. Narayanaswamy ◽  
Laxminarayan L. Raja ◽  
Noel T. Clemens
Keyword(s):  
Supersonic Flow ◽  
Glow Discharge ◽  
Direct Current ◽  
Discharge Plasma ◽  
Low Pressure ◽  
Plasma Actuator ◽  
Glow Discharge Plasma
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