Influence of applied voltage on space charge formation and accumulation characteristics of low density polyethylene

Yuanwei Zhu, Shengtao Li, Daomin Min, Guochang Li, Wencheng Wu, Weiwei Li

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Low density polyethylene (LDPE) has been widely applied on high voltage transmission cables due to its excellent insulating properties, good processability and chemical stability. Large numbers of experimental and theoretical studies have shown that space charge plays an important role in aging and breakdown in LDPE, and the applied voltage can significantly impact charge transport characteristic and space charge formation and accumulation in LDPE. By solving Schottky thermal emission equation, charge continuity equation and Poisson's equation, simulate space charge injection and accumulation phenomenon in LDPE under different applied voltages (0.4 kV-8 kV). The results show that: in a 1×10-4 m LDPE sample, space charge accumulation starts at the applied voltage of about 2 kV. The number of trapped electrons, free electrons and total amount of electrons all increase as the applied voltage goes higher. The higher the applied voltage, the faster the trapped electrons and total amount of electrons reach their stability. The space charge accumulation rate is fast before the injected electrons reach the anode, and slows down significantly after injected into the anode. The model has an important significance for in-depth studies to research and assess the LDPE insulating properties.

Original languageEnglish
Title of host publicationProceedings of IEEE International Conference on Solid Dielectrics, ICSD
Pages417-420
Number of pages4
DOIs
Publication statusPublished - 2013
Externally publishedYes
EventICSD 2013 - Proceedings of the 2013 IEEE International Conference on Solid Dielectrics - Bologna, Italy
Duration: 2013 Jun 302013 Jul 4

Other

OtherICSD 2013 - Proceedings of the 2013 IEEE International Conference on Solid Dielectrics
CountryItaly
CityBologna
Period13/6/3013/7/4

Fingerprint

Low density polyethylenes
Polyethylene
Electric space charge
polyethylenes
space charge
Electrons
Electric potential
electric potential
electrons
high voltages
Anodes
anodes
Charge injection
continuity equation
Chemical stability
Poisson equation
thermal emission
free electrons
cables
Charge transfer

Keywords

  • applied voltage
  • low density polyethylene (LDPE)
  • space charge
  • uni-polar charge transport model

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Electronic, Optical and Magnetic Materials
  • Materials Chemistry
  • Condensed Matter Physics

Cite this

Zhu, Y., Li, S., Min, D., Li, G., Wu, W., & Li, W. (2013). Influence of applied voltage on space charge formation and accumulation characteristics of low density polyethylene. In Proceedings of IEEE International Conference on Solid Dielectrics, ICSD (pp. 417-420). [6619858] https://doi.org/10.1109/ICSD.2013.6619858

Influence of applied voltage on space charge formation and accumulation characteristics of low density polyethylene. / Zhu, Yuanwei; Li, Shengtao; Min, Daomin; Li, Guochang; Wu, Wencheng; Li, Weiwei.

Proceedings of IEEE International Conference on Solid Dielectrics, ICSD. 2013. p. 417-420 6619858.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Zhu, Y, Li, S, Min, D, Li, G, Wu, W & Li, W 2013, Influence of applied voltage on space charge formation and accumulation characteristics of low density polyethylene. in Proceedings of IEEE International Conference on Solid Dielectrics, ICSD., 6619858, pp. 417-420, ICSD 2013 - Proceedings of the 2013 IEEE International Conference on Solid Dielectrics, Bologna, Italy, 13/6/30. https://doi.org/10.1109/ICSD.2013.6619858
Zhu Y, Li S, Min D, Li G, Wu W, Li W. Influence of applied voltage on space charge formation and accumulation characteristics of low density polyethylene. In Proceedings of IEEE International Conference on Solid Dielectrics, ICSD. 2013. p. 417-420. 6619858 https://doi.org/10.1109/ICSD.2013.6619858
Zhu, Yuanwei ; Li, Shengtao ; Min, Daomin ; Li, Guochang ; Wu, Wencheng ; Li, Weiwei. / Influence of applied voltage on space charge formation and accumulation characteristics of low density polyethylene. Proceedings of IEEE International Conference on Solid Dielectrics, ICSD. 2013. pp. 417-420
@inproceedings{8a429315d5a44eddb72fcccc3caafcba,
title = "Influence of applied voltage on space charge formation and accumulation characteristics of low density polyethylene",
abstract = "Low density polyethylene (LDPE) has been widely applied on high voltage transmission cables due to its excellent insulating properties, good processability and chemical stability. Large numbers of experimental and theoretical studies have shown that space charge plays an important role in aging and breakdown in LDPE, and the applied voltage can significantly impact charge transport characteristic and space charge formation and accumulation in LDPE. By solving Schottky thermal emission equation, charge continuity equation and Poisson's equation, simulate space charge injection and accumulation phenomenon in LDPE under different applied voltages (0.4 kV-8 kV). The results show that: in a 1×10-4 m LDPE sample, space charge accumulation starts at the applied voltage of about 2 kV. The number of trapped electrons, free electrons and total amount of electrons all increase as the applied voltage goes higher. The higher the applied voltage, the faster the trapped electrons and total amount of electrons reach their stability. The space charge accumulation rate is fast before the injected electrons reach the anode, and slows down significantly after injected into the anode. The model has an important significance for in-depth studies to research and assess the LDPE insulating properties.",
keywords = "applied voltage, low density polyethylene (LDPE), space charge, uni-polar charge transport model",
author = "Yuanwei Zhu and Shengtao Li and Daomin Min and Guochang Li and Wencheng Wu and Weiwei Li",
year = "2013",
doi = "10.1109/ICSD.2013.6619858",
language = "English",
isbn = "9781479908073",
pages = "417--420",
booktitle = "Proceedings of IEEE International Conference on Solid Dielectrics, ICSD",

}

TY - GEN

T1 - Influence of applied voltage on space charge formation and accumulation characteristics of low density polyethylene

AU - Zhu, Yuanwei

AU - Li, Shengtao

AU - Min, Daomin

AU - Li, Guochang

AU - Wu, Wencheng

AU - Li, Weiwei

PY - 2013

Y1 - 2013

N2 - Low density polyethylene (LDPE) has been widely applied on high voltage transmission cables due to its excellent insulating properties, good processability and chemical stability. Large numbers of experimental and theoretical studies have shown that space charge plays an important role in aging and breakdown in LDPE, and the applied voltage can significantly impact charge transport characteristic and space charge formation and accumulation in LDPE. By solving Schottky thermal emission equation, charge continuity equation and Poisson's equation, simulate space charge injection and accumulation phenomenon in LDPE under different applied voltages (0.4 kV-8 kV). The results show that: in a 1×10-4 m LDPE sample, space charge accumulation starts at the applied voltage of about 2 kV. The number of trapped electrons, free electrons and total amount of electrons all increase as the applied voltage goes higher. The higher the applied voltage, the faster the trapped electrons and total amount of electrons reach their stability. The space charge accumulation rate is fast before the injected electrons reach the anode, and slows down significantly after injected into the anode. The model has an important significance for in-depth studies to research and assess the LDPE insulating properties.

AB - Low density polyethylene (LDPE) has been widely applied on high voltage transmission cables due to its excellent insulating properties, good processability and chemical stability. Large numbers of experimental and theoretical studies have shown that space charge plays an important role in aging and breakdown in LDPE, and the applied voltage can significantly impact charge transport characteristic and space charge formation and accumulation in LDPE. By solving Schottky thermal emission equation, charge continuity equation and Poisson's equation, simulate space charge injection and accumulation phenomenon in LDPE under different applied voltages (0.4 kV-8 kV). The results show that: in a 1×10-4 m LDPE sample, space charge accumulation starts at the applied voltage of about 2 kV. The number of trapped electrons, free electrons and total amount of electrons all increase as the applied voltage goes higher. The higher the applied voltage, the faster the trapped electrons and total amount of electrons reach their stability. The space charge accumulation rate is fast before the injected electrons reach the anode, and slows down significantly after injected into the anode. The model has an important significance for in-depth studies to research and assess the LDPE insulating properties.

KW - applied voltage

KW - low density polyethylene (LDPE)

KW - space charge

KW - uni-polar charge transport model

UR - http://www.scopus.com/inward/record.url?scp=84891593728&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84891593728&partnerID=8YFLogxK

U2 - 10.1109/ICSD.2013.6619858

DO - 10.1109/ICSD.2013.6619858

M3 - Conference contribution

SN - 9781479908073

SP - 417

EP - 420

BT - Proceedings of IEEE International Conference on Solid Dielectrics, ICSD

ER -