Results 1 to 10 of about 2,280,314 (252)

Effect of Semiconductive Layer on Space Charge Accumulation in XLPE [PDF]

open access: yesE3S Web of Conferences, 2020
Long time DC pressure on high voltage cables will lead to the accumulation of space charge in XLPE cables, thus endangering cable insulation. In order to study the effect of the thickness of semiconducting layer on the space charge in XLPE, the space ...
Huan Bai   +4 more
doaj   +1 more source

Preventing Space Charge Accumulation by Incorporating Electrets

open access: yesAdvanced Materials Interfaces, 2023
Space charge accumulates near electrodes in insulating materials under high voltage direct current. Electric stress created by charge accumulation distorts electric field, reduces the remaining useful life of insulating materials, and decreases partial ...
Pradip Chandra Saha   +3 more
doaj   +1 more source

The Effect of Protrusions on the Initiation of Partial Discharges in XLPE High Voltage Cables [PDF]

open access: yesBulletin of the Polish Academy of Sciences: Technical Sciences, 2021
This paper is focusing on 3D Finite Elements Analysis (FEA) based modelling of protrusions as defects or imperfections in the XLPE high voltage cable. This study is aiming to examine the impact, protrusions have on the initiation of partial discharges ...
Mohammad AlShaikh Saleh   +4 more
doaj   +1 more source

Effect of Temperature on Space Charge Distribution in Two Layers of Transformer Oil and Impregnated Pressboard Under DC Voltage

open access: yesIEEE Access, 2020
The space charge accumulation is an important factor to design the oil-pressboard composite insulation of convertor transformer, which is greatly affected by the temperature.
Jinfeng Zhang   +4 more
doaj   +1 more source

WSN-Based Space Charge Density Measurement System. [PDF]

open access: yesPLoS ONE, 2017
It is generally acknowledged that high voltage direct current (HVDC) transmission line endures the drawback of large area, because of which the utilization of cable for space charge density monitoring system is of inconvenience.
Dawei Deng   +3 more
doaj   +1 more source

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

open access: yesIET 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   +3 more
doaj   +1 more source

Research progress on space charge measurement and space charge characteristics of nanodielectrics

open access: yesIET Nanodielectrics, 2018
Since the proposal of the notion of nanodielectric, the space charge characteristics of nanodielectrics have been widely investigated. With the addition of nanoparticles, some nanodielectrics exhibit smaller space charge accumulation amount during the ...
Ya-Ni Wang   +3 more
doaj   +1 more source

Modified Charge Transport Model Under High-Frequency Unipolar Square Wave Voltage

open access: yesFrontiers in Materials, 2022
As the main insulation material of the power electronic transformer (PET), polyimide (PI) is easy to accumulate space charge under the continuous high-frequency pulse voltage, which will threaten the operation of PET and cause electric field distortion ...
Jianxiang Xie   +4 more
doaj   +1 more source

Simulation of Influence of DC Pre-Stress on Space-Charge Characteristics of Cross-Linked Polyethylene in Inhomogeneous Field

open access: yesIEEE Access, 2020
Space charge is one of the main causes of electrical tree initiation in high-voltage cable insulation. To investigate the influence of DC pre-stress on the space-charge distribution of cross-linked polyethylene (XLPE), a two-dimensional needle-plate ...
Hechen Liu   +5 more
doaj   +1 more source

Effect of DC Pre-stress on Space Charge and Electrical Tree in XLPE with Needle-Plate Electrodes

open access: yesZhongguo dianli, 2021
Space charge is one of the main factors that affect the electrical tree characteristics of HVDC cable insulation. Based on the bipolar charge transport model, this paper simulates the space charge distribution characteristics of the two-dimensional ...
Xiaobin XU   +5 more
doaj   +1 more source

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