Partial discharge behaviour of cross-linked polyethylene - natural rubber blends nanocomposites as electrical insulating material

Polymeric materials are widely used in power apparatus as electrical insulation, especially for high voltage cable insulation. However, partial discharge (PD) has always been a predecessor to major faults and problems in this field. By adding a weight percentage (wt%) of a nanofiller to the electric...

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主要作者:	Wan Mohd. Zawawi, Wan Akmal ‘Izzati
格式:	Thesis
語言:	English
出版:	2015
主題:	TK Electrical engineering Electronics Nuclear engineering
在線閱讀:	http://eprints.utm.my/id/eprint/54596/1/WanAkmal%E2%80%98IzzatiWanMohdZawawiMFKE2015.pdf
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id	my-utm-ep.54596
record_format	uketd_dc
spelling	my-utm-ep.545962020-10-20T02:39:30Z Partial discharge behaviour of cross-linked polyethylene - natural rubber blends nanocomposites as electrical insulating material 2015-05 Wan Mohd. Zawawi, Wan Akmal ‘Izzati TK Electrical engineering. Electronics Nuclear engineering Polymeric materials are widely used in power apparatus as electrical insulation, especially for high voltage cable insulation. However, partial discharge (PD) has always been a predecessor to major faults and problems in this field. By adding a weight percentage (wt%) of a nanofiller to the electrical insulation, the physical and electrical properties can be enhanced. In this research, natural rubber (NR) blends polymeric material of cross-linked polyethylene (XLPE) as insulation was combined with nanofillers, namely nanosilica (SiO2) or organo-montmorillonite (O-MMT). Seven samples comprising six compositions of a blend of 20 wt% NR and 80 wt% of XLPE with 2, 4, and 8 pph from SiO2 and O-MMT, and one without nanofiller were used in the experiments. Two PD tests were carried out based on CIGRE Method II technique, where 7 kVrms high voltage was applied for 1 hour and 3 hours. LabVIEW™ program was used to analyse the PD data captured from the on-line and off-line PD measuring system where PD pulse magnitudes and number of PD occurrences were measured. Results showed that samples of NR-XLPE blended with SiO2 have lower PD number than the O-MMT samples. Scanning Electron Microscopy images showed that smoother surfaces were observed as the wt% of the nanofiller increased, indicating that the samples were less degraded. Energy Dispersive X-ray measurement of samples containing SiO2 emitted more stable amounts of oxygen and carbon contents when exposed to high voltage. Analysis on Fourier Transform Infrared spectroscopy showed a reduction of OH groups in the samples. Using QuickField™, the electric field distribution of the samples confirmed that in series of 2, 4, and 8 pph nanofiller loading, there is a correlation between the amount of nanofiller and discharge activities. The findings have shown that SiO2 and O-MMT and the different loadings do enhance the insulation properties when mixed with NR-XLPE. 2015-05 Thesis http://eprints.utm.my/id/eprint/54596/ http://eprints.utm.my/id/eprint/54596/1/WanAkmal%E2%80%98IzzatiWanMohdZawawiMFKE2015.pdf application/pdf en public http://dms.library.utm.my:8080/vital/access/manager/Repository/vital:86668 masters Universiti Teknologi Malaysia, Faculty of Electrical Engineering Faculty of Electrical Engineering
institution	Universiti Teknologi Malaysia
collection	UTM Institutional Repository
language	English
topic	TK Electrical engineering Electronics Nuclear engineering
spellingShingle	TK Electrical engineering Electronics Nuclear engineering Wan Mohd. Zawawi, Wan Akmal ‘Izzati Partial discharge behaviour of cross-linked polyethylene - natural rubber blends nanocomposites as electrical insulating material
description	Polymeric materials are widely used in power apparatus as electrical insulation, especially for high voltage cable insulation. However, partial discharge (PD) has always been a predecessor to major faults and problems in this field. By adding a weight percentage (wt%) of a nanofiller to the electrical insulation, the physical and electrical properties can be enhanced. In this research, natural rubber (NR) blends polymeric material of cross-linked polyethylene (XLPE) as insulation was combined with nanofillers, namely nanosilica (SiO2) or organo-montmorillonite (O-MMT). Seven samples comprising six compositions of a blend of 20 wt% NR and 80 wt% of XLPE with 2, 4, and 8 pph from SiO2 and O-MMT, and one without nanofiller were used in the experiments. Two PD tests were carried out based on CIGRE Method II technique, where 7 kVrms high voltage was applied for 1 hour and 3 hours. LabVIEW™ program was used to analyse the PD data captured from the on-line and off-line PD measuring system where PD pulse magnitudes and number of PD occurrences were measured. Results showed that samples of NR-XLPE blended with SiO2 have lower PD number than the O-MMT samples. Scanning Electron Microscopy images showed that smoother surfaces were observed as the wt% of the nanofiller increased, indicating that the samples were less degraded. Energy Dispersive X-ray measurement of samples containing SiO2 emitted more stable amounts of oxygen and carbon contents when exposed to high voltage. Analysis on Fourier Transform Infrared spectroscopy showed a reduction of OH groups in the samples. Using QuickField™, the electric field distribution of the samples confirmed that in series of 2, 4, and 8 pph nanofiller loading, there is a correlation between the amount of nanofiller and discharge activities. The findings have shown that SiO2 and O-MMT and the different loadings do enhance the insulation properties when mixed with NR-XLPE.
format	Thesis
qualification_level	Master's degree
author	Wan Mohd. Zawawi, Wan Akmal ‘Izzati
author_facet	Wan Mohd. Zawawi, Wan Akmal ‘Izzati
author_sort	Wan Mohd. Zawawi, Wan Akmal ‘Izzati
title	Partial discharge behaviour of cross-linked polyethylene - natural rubber blends nanocomposites as electrical insulating material
title_short	Partial discharge behaviour of cross-linked polyethylene - natural rubber blends nanocomposites as electrical insulating material
title_full	Partial discharge behaviour of cross-linked polyethylene - natural rubber blends nanocomposites as electrical insulating material
title_fullStr	Partial discharge behaviour of cross-linked polyethylene - natural rubber blends nanocomposites as electrical insulating material
title_full_unstemmed	Partial discharge behaviour of cross-linked polyethylene - natural rubber blends nanocomposites as electrical insulating material
title_sort	partial discharge behaviour of cross-linked polyethylene - natural rubber blends nanocomposites as electrical insulating material
granting_institution	Universiti Teknologi Malaysia, Faculty of Electrical Engineering
granting_department	Faculty of Electrical Engineering
publishDate	2015
url	http://eprints.utm.my/id/eprint/54596/1/WanAkmal%E2%80%98IzzatiWanMohdZawawiMFKE2015.pdf
_version_	1747817684828946432

Partial discharge behaviour of cross-linked polyethylene - natural rubber blends nanocomposites as electrical insulating material

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