Results 91 to 100 of about 1,315 (207)
, 2009 The statistical initiation and propagation characteristics of electrical trees in cross-linked polyethylene (XLPE) cables with different voltage ratings from 66 to 500 kV were investigated under a constant test voltage of 50 Hz/7 kV (the 66 kV rating ...
Li, Shengtao +3 more
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High VoltageDuring the operation of high‐voltage cables, external stress and residual stress can affect the aggregated structure of insulating materials and lead to significant deterioration in their electrical performance.
Yunqi Xing +7 more
doaj +1 more source
Dynamics of space charge and electroluminescence modelling in polyethylene
, 2012 Space charge has been recognized as an important factor contributing to the electrical failure of the cable insulation. Extensive efforts have been made to investigate space charge dynamics within polymeric insulations under electric stresses.
Zhao, Junwei
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Праці Інституту електродинаміки Національної академії наук УкраїниThe study of two-dimensional electric field in cross-linked polyethylene (XLPE) insulation with eccentricity and a protrusion of the insulation into the internal semiconducting screen of high-voltage cable is carried out by computer modeling.
І.М. Кучерява
doaj +1 more source
Influence of ac ageing on space charge dynamics in LDPE
, 2003 Polymeric materials have been widely used as insulation in power industry due to their excellent electrical properties. However, these properties deteriorate in time irreversibly when the material is subjected to electric stress. Although space charge is
Fu, M, Liu, X Z, Chen, G
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2-Vinylanthraquinone-grafted XLPE suppresses AC electrical treeing by deep-trap regulation
Polymer TestingElectrical treeing is a primary degradation pathway in cross-linked polyethylene (XLPE) cable insulation, making enhancement of the tree-initiation voltage (TIV) critical for reliable high-voltage operation.
Ke Li +3 more
doaj +1 more source
Impulse ageing of polymeric materials
, 2011 Impulse over-voltage is a common phenomenon in electric power systems. A switching impulse is created by a switching surge or local fault while a lightning impulse is due to direct lightning strike to high voltage plant such as an overhead line.
Dao, Ngoc Long
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Use of Grafted Voltage Stabilizer to Enhance Dielectric Strength of Cross-Linked Polyethylene
, 2019 Aromatic voltage stabilizers can improve the dielectric properties of cross-linked polyethylene (XLPE); however, their poor compatibility with XLPE hinders their practical application. Improving the compatibility of aromatic voltage stabilizers with XLPE
Zhigang Li +6 more
core +1 more source
Effect of Functionalized Graphene Oxide with Hyper-Branched Flame Retardant on Flammability and Thermal Stability of Cross-Linked Polyethylene [PDF]
, 2014 In this work, GO was functionalized by a hyper-branched flame retardant, which was synthesized by the reaction of N-aminoethyl piperazine and di(acryloyloxyethyl)methylphosphonate. Subsequently, the resultant functionalized GO (FGO) was incorporated into
Wang, Jian +9 more
core +1 more source
Significant Suppression of High Electric Field Regions in XLPE via Voltage Stabilisers
High VoltageDielectric degradation typically originates from local defects. The resulting electric field concentration accelerates defect growth. Suppressing field distortion arising from such local weaknesses has long been a major challenge in electrical insulation.
Ke Li +4 more
doaj +1 more source