Results 11 to 20 of about 402,609 (305)

Effect of Thickness on the Space Charge Behavior and DC Breakdown Strength of Cross-Linked Polyethylene Insulation

open access: yesIEEE Access, 2020
In high voltage direct current (HVDC) cable systems, study of electric field distortion created by space charge accumulation is very important for examining insulation performance.
Zhipeng Ma   +4 more
doaj   +1 more source

Space Charge Behavior and Mechanism of Polyimide Under Pulse Voltage

open access: yesZhongguo dianli, 2022
The insulation of power electronic equipment is more likely to deteriorate and fail early because it is operated with high repetition rate and steep rise time pulse voltage for a long time.
Jianjian HOU   +5 more
doaj   +1 more source

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

open access: yes, 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.
Chen, George   +2 more
core   +1 more source

Space Charge Measurement and Modelling in Cross-Linked Polyethylene

open access: yesEnergies, 2020
Cross-linked polyethylene, commercially known as XLPE, is widely used as an insulating material in high voltage cables. However, space charge accumulation under the DC field is one of the most challenging problems in the further development of XLPE ...
Yunpeng Zhan   +6 more
doaj   +1 more source

A simple method considering the synergetic effect of space charge and inhomogeneous material conductivity for DC electric field computation

open access: yesHigh Voltage, 2022
The current continuity equation is usually applied to solve DC electric field distribution when there is inhomogeneous material conductivity due to temperature gradient or multi‐layer dielectrics.
Xiao Yang   +6 more
doaj   +1 more source

Influence of thermal treatment and residues on space charge accumulation in XLPE for DC power cable application [PDF]

open access: yes, 2007
Effects of cross-linking by-products (residues) of polyethylene on space charge accumulation and decay are investigated in the paper using the pulsed electro-acoustic technique.
Chen, G.   +3 more
core   +1 more source

Effect of Moistures on Space Charge and Trap Level Characteristics of Oil-Impregnated Pressboards

open access: yesIEEE Access, 2020
Oil-paper insulation as an irreplaceable insulation system in the electrical power transformer is inevitably suffering the water intrusion on working condition, which will make dielectric performance degraded and insulation aging accelerated.
Yi Guan   +5 more
doaj   +1 more source

Inhibition Effect of Graphene on Space Charge Injection and Accumulation in Low-Density Polyethylene

open access: yesNanomaterials, 2018
Space charge injection and accumulation is attracting much attention in the field of dielectric insulation especially for electronic devices, power equipment and so on.
Zhonglei Li   +4 more
doaj   +1 more source

Regulation of PANI nanofiber conductivity and its influence on the DC dielectric properties of LDPE

open access: yesPolymer Testing, 2021
To study the effect of electrical conductivity of nanomaterials on the space charge accumulation in low density polyethylene (LDPE), doped and dedoped polyaniline (PANI) nanofibers with the same diameter and different conductivity were prepared and added
Chengcheng Zhang   +4 more
doaj   +1 more source

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

open access: yesEnergies, 2018
The electric field distortion caused by space charge is an important factor affecting the operation reliability of oil–paper insulation in a converter transformer.
Qingguo Chen   +4 more
doaj   +1 more source

Home - About - Disclaimer - Privacy