Influence Of mechanical pressure on space charge penetration behavior in low-density polyethylene (LDPE) sheet

Space charge penetration into bulk of cable insulation is known as the cause of insulation breakdown thus affecting the cable power delivery capability. Penetration of packet-like positive space charge enhances local field and when the field increases up to 5 MV/cm before breakdown occurs. Exactly b...

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Main Authors:	Amir Izzani, Mohamed, Mohd Mawardi, Saari, Ozaki, Ryotaro, Kadowaki, Kazunori
Format:	Conference or Workshop Item
Language:	English
Published:	IEEE 2017
Subjects:	TK Electrical engineering. Electronics Nuclear engineering
Online Access:	http://umpir.ump.edu.my/id/eprint/18661/ http://umpir.ump.edu.my/id/eprint/18661/ http://umpir.ump.edu.my/id/eprint/18661/1/Influence%20Of%20Mechanical%20Pressure%20On%20Space%20Charge.pdf

id	ump-18661
recordtype	eprints
spelling	ump-186612018-07-20T03:06:06Z http://umpir.ump.edu.my/id/eprint/18661/ Influence Of mechanical pressure on space charge penetration behavior in low-density polyethylene (LDPE) sheet Amir Izzani, Mohamed Mohd Mawardi, Saari Ozaki, Ryotaro Kadowaki, Kazunori TK Electrical engineering. Electronics Nuclear engineering Space charge penetration into bulk of cable insulation is known as the cause of insulation breakdown thus affecting the cable power delivery capability. Penetration of packet-like positive space charge enhances local field and when the field increases up to 5 MV/cm before breakdown occurs. Exactly before the breakdown occurs, space charge penetration seems stagnant as it is prevented to penetrate further into cathode. The generated Maxwell force is assumed to press the free volume of the insulation thus reducing the size of the free volume itself. A pulsed-electroacoustic (PEA) equipment capable to press the sample up to 5 ton is developed. Sample used in this study is a 150 μm low-density polyethylene (LDPE) sheet. The sample is stressed with positive dc voltage so that the mean applied field is equal to 1.5 MV/cm. The range of pressure applied to the sample is from 0 MPa and 32 MPa. The penetration gradually reduces with the increase of pressure. Sample pressed with 32 MPa showed the least penetration depth as little as 5 % of the sample thickness. As a comparison, space charge penetration of sample with 0 MPa pressure is as depth as 85 % of the sample thickness. This shows that space charge penetration is restricted when sample is pressed. The result obtained shows that it requires at least 24 MPa to suppress space charge penetration. IEEE 2017-10 Conference or Workshop Item PeerReviewed pdf en http://umpir.ump.edu.my/id/eprint/18661/1/Influence%20Of%20Mechanical%20Pressure%20On%20Space%20Charge.pdf Amir Izzani, Mohamed and Mohd Mawardi, Saari and Ozaki, Ryotaro and Kadowaki, Kazunori (2017) Influence Of mechanical pressure on space charge penetration behavior in low-density polyethylene (LDPE) sheet. In: International Symposium on Electrical Insulating Materials, ISEIM 2017, 11-15 September 2017 , Toyohashi Chamber of Commerce and Industry, Toyohashi; Japan. pp. 184-187.. ISBN 978-488686099-6 https://ieeexplore.ieee.org/document/8088718/
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Malaysia Pahang
building	UMP Institutional Repository
collection	Online Access
language	English
topic	TK Electrical engineering. Electronics Nuclear engineering
spellingShingle	TK Electrical engineering. Electronics Nuclear engineering Amir Izzani, Mohamed Mohd Mawardi, Saari Ozaki, Ryotaro Kadowaki, Kazunori Influence Of mechanical pressure on space charge penetration behavior in low-density polyethylene (LDPE) sheet
description	Space charge penetration into bulk of cable insulation is known as the cause of insulation breakdown thus affecting the cable power delivery capability. Penetration of packet-like positive space charge enhances local field and when the field increases up to 5 MV/cm before breakdown occurs. Exactly before the breakdown occurs, space charge penetration seems stagnant as it is prevented to penetrate further into cathode. The generated Maxwell force is assumed to press the free volume of the insulation thus reducing the size of the free volume itself. A pulsed-electroacoustic (PEA) equipment capable to press the sample up to 5 ton is developed. Sample used in this study is a 150 μm low-density polyethylene (LDPE) sheet. The sample is stressed with positive dc voltage so that the mean applied field is equal to 1.5 MV/cm. The range of pressure applied to the sample is from 0 MPa and 32 MPa. The penetration gradually reduces with the increase of pressure. Sample pressed with 32 MPa showed the least penetration depth as little as 5 % of the sample thickness. As a comparison, space charge penetration of sample with 0 MPa pressure is as depth as 85 % of the sample thickness. This shows that space charge penetration is restricted when sample is pressed. The result obtained shows that it requires at least 24 MPa to suppress space charge penetration.
format	Conference or Workshop Item
author	Amir Izzani, Mohamed Mohd Mawardi, Saari Ozaki, Ryotaro Kadowaki, Kazunori
author_facet	Amir Izzani, Mohamed Mohd Mawardi, Saari Ozaki, Ryotaro Kadowaki, Kazunori
author_sort	Amir Izzani, Mohamed
title	Influence Of mechanical pressure on space charge penetration behavior in low-density polyethylene (LDPE) sheet
title_short	Influence Of mechanical pressure on space charge penetration behavior in low-density polyethylene (LDPE) sheet
title_full	Influence Of mechanical pressure on space charge penetration behavior in low-density polyethylene (LDPE) sheet
title_fullStr	Influence Of mechanical pressure on space charge penetration behavior in low-density polyethylene (LDPE) sheet
title_full_unstemmed	Influence Of mechanical pressure on space charge penetration behavior in low-density polyethylene (LDPE) sheet
title_sort	influence of mechanical pressure on space charge penetration behavior in low-density polyethylene (ldpe) sheet
publisher	IEEE
publishDate	2017
url	http://umpir.ump.edu.my/id/eprint/18661/ http://umpir.ump.edu.my/id/eprint/18661/ http://umpir.ump.edu.my/id/eprint/18661/1/Influence%20Of%20Mechanical%20Pressure%20On%20Space%20Charge.pdf
first_indexed	2023-09-18T22:26:33Z
last_indexed	2023-09-18T22:26:33Z
_version_	1777416005325160448

Influence Of mechanical pressure on space charge penetration behavior in low-density polyethylene (LDPE) sheet

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