Results 21 to 30 of about 6,769,174 (294)

Decay of Electric Charge on Corona Charged Polyethylene [PDF]

, 2007
In this paper, the surface potential decay of corona-charged low density polyethylene (LDPE) films has been investigated. It has been found that for the same sample thickness the faster decay occurs in the sample with a higher charging voltage.
Zhiqiang Xu, Xu, Z, Zhang, L, G Chen, XU, Zhiqiang, Chen, G, Zhang, Linwen, Linwen Zhang, Chen, George   +8 more
core   +2 more sources

Surface Charge Properties of Epoxy Composites under DC Voltage Affected by Surface and Bulk Conductivity

Energies, 2021
As DC transmission voltage increases, the DC wall bushing becomes longer, and a supporting insulator is introduced to keep the conductor straight. Under extremely high electric fields coupled with a thermal gradient, the surface charge of the supporting ...
Qian Wang, Xidong Liang, Ke Chen, Chao Wu, Shan Liu   +4 more
doaj   +1 more source

Effects of volume and surface conductivity on the surface charge and electric field characteristics of the tri‐post insulator in SF6‐filled ± 500 kV DC‐GIL

IET Generation, Transmission & Distribution, 2023
Herein, the surface charge characteristics of a tri‐post insulator in a ± 500 kV direct current gas‐insulated transmission lines (DC‐GIL) filled with SF6 are thoroughly studied.
Xiaolong Li, Guangkuo Zhang, Chen Cao, Yan Shi, Jie Li, Wenzhi Chang   +5 more
doaj   +1 more source

Space Charge Accumulation under Effects of Temperature Gradient and Applied Voltage Reversal on Solid Dielectric DC Cable [PDF]

, 2009
A well-known fact of the existence and accumulation of space charge within the insulating material poses threat to the reliability in the operation of dc power cables.
Choo, Wilson, S. G. Swingler, G. Chen, Swingler, Steve, W. Choo, Chen, George   +5 more
core   +2 more sources

Charge transport and accumulation around the cone-type insulator in SF(6)-filled 550 kV DC GIL

The Journal of Engineering, 2019
The gas-insulated transmission line (GIL) has the advantages of large transmission capacity, high operation reliability and environmental friendliness. It is suitable for the high voltage direct current (HVDC) power transmission of hydropower stations or
Bo Zhang, Yujing Guo, Yongqi Yao, Zhijun Wang, Hao Zhang, Guangyao Jin   +5 more
doaj   +1 more source

Correlation of traps inside XLPE and polypropylene with space charge dynamics under polarity reversal condition

IET Science, Measurement & Technology, 2021
Polypropylene (PP) is being considered as a suitable alternative to the cross‐linked polyethylene (XLPE) insulation as the latter is prone to the space charge accumulation when subjected to the voltage polarity reversals in line‐commutated converter high
Ashish Paramane, Xiangrong Chen, Chao Dai, Yasuhiro Tanaka   +3 more
doaj   +1 more source

Correlated development of a (2 x 2) reconstruction and a charge accumulation layer on the InAs(111)-Bi surface

, 2011
We have studied the formation of a Bi-induced (2 x 2) reconstruction on the InAs(111)B surface. In connection to the development of the (2 x 2) reconstruction, a two dimensional charge accumulation layer located at the bottom of the InAs conduction band ...
Mats Göthelid, Karlsson, Ulf O., Szamota-Leandersson, Karolina, Leandersson, Mats,, Szamota-Leandersson, Karolina,, Karolina Szamota-Leandersson, Ulf O. Karlsson, Göthelid, Mats,, Karlsson, Ulf O.,, Mats Leandersson, Gothelid, Mats, Lund University., Leandersson, Mats   +12 more
core   +1 more source

The Influence of Residue on Space Charge Accumulation in Purposely Modified Thick Plaque XLPE Sample for DC Application [PDF]

, 2005
Effects residues (cross-linking by-products and additives) in polyethylene on space charge accumulation and decay have been investigated using the pulsed electro-acoustic technique.
Fothergill, J C, Fu, M, Chen, G
core   +1 more source

Mechanisms for surface potential decay on fluorinated epoxy in high voltage DC applications [PDF]

, 2014
Epoxy resin has been extensively used for decades as an insulation material in high voltage transmission systems. However, this insulation material does suffer from bulk and surface charging when used as insulating spacer, mainly in high voltage DC ...
Z. An, Mohamad, A., Y. Zhang, An, Z., A. Mohamad, Chen, G., G. Chen, Zhang, Y.   +7 more
core   +1 more source

Surface charge accumulation characteristics on DC GIL three-post insulators considering the influence of temperature gradient [PDF]

, 2023
Surface charge accumulation is considered to be a critical factor in flashover failure of three-post insulators. However, surface charge accumulation characteristics on three-post insulators with complex structures and uneven electric fields are still ...
Li, Qingmin, Wang, Jian, Xue, Naifan, Liu, Zhipeng, Hu, Qi, Haddad, Manu   +5 more
core   +1 more source