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Synthesis of a Novel Semi-Conductive Composites Doping with La(0.8)Sr(0.2)MnO(3) for Excellent Electric Performance for HVDC Cable

The semi-conductive layer located between the wire core and the insulation layer in high voltage direct current (HVDC) cable plays a vital role in uniform electric field and affecting space charges behaviors. In this work, the research idea of adding ionic conductive particles to semi-conductive mat...

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Autores principales: Yin, Hongxia, Cui, Yingcao, Wei, Yanhui, Hao, Chuncheng, Lei, Qingquan
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7240568/
https://www.ncbi.nlm.nih.gov/pubmed/32260324
http://dx.doi.org/10.3390/polym12040809
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author Yin, Hongxia
Cui, Yingcao
Wei, Yanhui
Hao, Chuncheng
Lei, Qingquan
author_facet Yin, Hongxia
Cui, Yingcao
Wei, Yanhui
Hao, Chuncheng
Lei, Qingquan
author_sort Yin, Hongxia
collection PubMed
description The semi-conductive layer located between the wire core and the insulation layer in high voltage direct current (HVDC) cable plays a vital role in uniform electric field and affecting space charges behaviors. In this work, the research idea of adding ionic conductive particles to semi-conductive materials to improve the conductive network and reduce the energy of the moving charge inside it and to suppress charge injection was proposed. Semi-conductive composites doped with different La(0.8)Sr(0.2)MnO(3) (LSM) contents were prepared. Resistivity at different temperatures was measured to investigate the positive temperature coefficient (PTC) effect. Pulse electro-acoustic (PEA) method and thermal-stimulation depolarization currents (TSDC) tests of the insulation layers were carried out. From the results, space charge distribution and TSDC currents in the insulation samples were analyzed to evaluate the inhibitory effect on space charge injection. When LSM content is 6 wt. %, the experimental results show that the PTC effect of the specimen and charge injection are both being suppressed significantly. The maximum resistivity of it is decreased by 53.3% and the insulation sample has the smallest charge amount, 1.85 × 10(−7) C under 10 kV/mm—decreased by 40%, 3.6 × 10(−7) C under 20 kV/mm—decreased by 45%, and 6.42 × 10(−7) C under 30 kV/mm—decreased by 26%. When the LSM content reaches 10 wt. %, the suppression effect on the PTC effect and the charge injection are both weakened, owing to the agglomeration of the conductive particles inside the composites which leads to the interface electric field distortion and results in charge injection enhancement.
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spelling pubmed-72405682020-06-11 Synthesis of a Novel Semi-Conductive Composites Doping with La(0.8)Sr(0.2)MnO(3) for Excellent Electric Performance for HVDC Cable Yin, Hongxia Cui, Yingcao Wei, Yanhui Hao, Chuncheng Lei, Qingquan Polymers (Basel) Article The semi-conductive layer located between the wire core and the insulation layer in high voltage direct current (HVDC) cable plays a vital role in uniform electric field and affecting space charges behaviors. In this work, the research idea of adding ionic conductive particles to semi-conductive materials to improve the conductive network and reduce the energy of the moving charge inside it and to suppress charge injection was proposed. Semi-conductive composites doped with different La(0.8)Sr(0.2)MnO(3) (LSM) contents were prepared. Resistivity at different temperatures was measured to investigate the positive temperature coefficient (PTC) effect. Pulse electro-acoustic (PEA) method and thermal-stimulation depolarization currents (TSDC) tests of the insulation layers were carried out. From the results, space charge distribution and TSDC currents in the insulation samples were analyzed to evaluate the inhibitory effect on space charge injection. When LSM content is 6 wt. %, the experimental results show that the PTC effect of the specimen and charge injection are both being suppressed significantly. The maximum resistivity of it is decreased by 53.3% and the insulation sample has the smallest charge amount, 1.85 × 10(−7) C under 10 kV/mm—decreased by 40%, 3.6 × 10(−7) C under 20 kV/mm—decreased by 45%, and 6.42 × 10(−7) C under 30 kV/mm—decreased by 26%. When the LSM content reaches 10 wt. %, the suppression effect on the PTC effect and the charge injection are both weakened, owing to the agglomeration of the conductive particles inside the composites which leads to the interface electric field distortion and results in charge injection enhancement. MDPI 2020-04-04 /pmc/articles/PMC7240568/ /pubmed/32260324 http://dx.doi.org/10.3390/polym12040809 Text en © 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Yin, Hongxia
Cui, Yingcao
Wei, Yanhui
Hao, Chuncheng
Lei, Qingquan
Synthesis of a Novel Semi-Conductive Composites Doping with La(0.8)Sr(0.2)MnO(3) for Excellent Electric Performance for HVDC Cable
title Synthesis of a Novel Semi-Conductive Composites Doping with La(0.8)Sr(0.2)MnO(3) for Excellent Electric Performance for HVDC Cable
title_full Synthesis of a Novel Semi-Conductive Composites Doping with La(0.8)Sr(0.2)MnO(3) for Excellent Electric Performance for HVDC Cable
title_fullStr Synthesis of a Novel Semi-Conductive Composites Doping with La(0.8)Sr(0.2)MnO(3) for Excellent Electric Performance for HVDC Cable
title_full_unstemmed Synthesis of a Novel Semi-Conductive Composites Doping with La(0.8)Sr(0.2)MnO(3) for Excellent Electric Performance for HVDC Cable
title_short Synthesis of a Novel Semi-Conductive Composites Doping with La(0.8)Sr(0.2)MnO(3) for Excellent Electric Performance for HVDC Cable
title_sort synthesis of a novel semi-conductive composites doping with la(0.8)sr(0.2)mno(3) for excellent electric performance for hvdc cable
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7240568/
https://www.ncbi.nlm.nih.gov/pubmed/32260324
http://dx.doi.org/10.3390/polym12040809
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