Space charge characteristics of LDPE nanocomposite/LDPE insulation system
Space charge characteristics of LDPE nanocomposite/LDPE insulation system
Two kinds of insulation systems with nanocomposite have been fabricated by co-pressing low-density polyethylene (LDPE) and nano-titania doped LDPE (TiO2-LDPE) films. The
three-layer systems considered are TiO2-LDPE/LDPE/TiO2-LDPE (namely, NLN) and LDPE/TiO2-LDPE/LDPE (namely, LNL). Space charge distributions under different applied electric fields were measured by the pulsed electro acoustic (PEA) method. The charge transport characteristics and the interface space charge formation as well as the
effect of nano-TiO2 concentration have been systematically discussed. The results show that heterocharges and homocharges are formed at the LDPE/TiO2-LDPE polymer
interfaces in the system NLN and LNL, respectively. The nature of the interfacial charge has been explained in term of the interfacial polarization theory combined with
conductivity and permittivity of the materials. Additionally, the recombination between charges influences the amount of the interface space charge. However, the NLN system always stores more charges than LNL, which was explained by the change of the effective electric field caused by the formation of the interface space charges. The results obtained would provide experimental support for optimizing high voltage direct current power cables.
LDPE, nano-TiO2, PEA, space charge characteristics, polymer interface
92-100
Li, Shengtao
e2d199c9-1c0c-40c8-aefb-ff3b3d8e4799
Zhao, Ni
78ce4eb4-ebd6-448c-aff5-69bef68dd5c1
Nie, Yongjie
a93f688f-85bf-4d76-a928-2e36f9f2b4b6
Wang, Xia
05442af1-b96d-4271-8b58-b8515946656a
Chen, George
3de45a9c-6c9a-4bcb-90c3-d7e26be21819
Teyssedre, Gilbert
22454a9c-5caf-4e66-9516-89eb03136127
February 2015
Li, Shengtao
e2d199c9-1c0c-40c8-aefb-ff3b3d8e4799
Zhao, Ni
78ce4eb4-ebd6-448c-aff5-69bef68dd5c1
Nie, Yongjie
a93f688f-85bf-4d76-a928-2e36f9f2b4b6
Wang, Xia
05442af1-b96d-4271-8b58-b8515946656a
Chen, George
3de45a9c-6c9a-4bcb-90c3-d7e26be21819
Teyssedre, Gilbert
22454a9c-5caf-4e66-9516-89eb03136127
Li, Shengtao, Zhao, Ni, Nie, Yongjie, Wang, Xia, Chen, George and Teyssedre, Gilbert
(2015)
Space charge characteristics of LDPE nanocomposite/LDPE insulation system.
IEEE Transactions on Dielectrics and Electrical Insulation, 22 (1), .
(doi:10.1109/TDEI.2014.004524).
Abstract
Two kinds of insulation systems with nanocomposite have been fabricated by co-pressing low-density polyethylene (LDPE) and nano-titania doped LDPE (TiO2-LDPE) films. The
three-layer systems considered are TiO2-LDPE/LDPE/TiO2-LDPE (namely, NLN) and LDPE/TiO2-LDPE/LDPE (namely, LNL). Space charge distributions under different applied electric fields were measured by the pulsed electro acoustic (PEA) method. The charge transport characteristics and the interface space charge formation as well as the
effect of nano-TiO2 concentration have been systematically discussed. The results show that heterocharges and homocharges are formed at the LDPE/TiO2-LDPE polymer
interfaces in the system NLN and LNL, respectively. The nature of the interfacial charge has been explained in term of the interfacial polarization theory combined with
conductivity and permittivity of the materials. Additionally, the recombination between charges influences the amount of the interface space charge. However, the NLN system always stores more charges than LNL, which was explained by the change of the effective electric field caused by the formation of the interface space charges. The results obtained would provide experimental support for optimizing high voltage direct current power cables.
Text
07033374.pdf
- Version of Record
Restricted to Repository staff only
Request a copy
More information
Accepted/In Press date: 8 September 2014
Published date: February 2015
Keywords:
LDPE, nano-TiO2, PEA, space charge characteristics, polymer interface
Organisations:
EEE
Identifiers
Local EPrints ID: 380101
URI: http://eprints.soton.ac.uk/id/eprint/380101
PURE UUID: 24338b9e-5c75-433e-9560-cdf95aa5dca9
Catalogue record
Date deposited: 07 Sep 2015 09:45
Last modified: 14 Mar 2024 20:54
Export record
Altmetrics
Contributors
Author:
Shengtao Li
Author:
Ni Zhao
Author:
Yongjie Nie
Author:
Xia Wang
Author:
George Chen
Author:
Gilbert Teyssedre
Download statistics
Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.
View more statistics