NDLI: Application of the Thermal Step Method to characterize the charge ability of XLPE insulation with and without ethylacrylate copolymer

Content Provider	IEEE Xplore Digital Library
Author	Platbrood, G. Agnel, S. Toureille, A.
Copyright Year	2001
Description	Author affiliation: Laborelec, Linkebeek, Belgium (Platbrood, G.)
Abstract	In Belgium, two types of high voltage underground power cables with different compositions have been installed, namely XLPE (an homopolymer cross linked polyethylene) and XLPE-EA copolymerized with ethylacrylate. The presence of space charge is now acknowledged to have a main role on electrical stresses applied to the insulation, and consequently in insulation lifetime. Part of the study was devoted to obtain a better characterization of their capacity of this two installed insulations to store space charges under AC. in this paper, results of space charge measurements by the Thermal Step Method (TSM) and Thermally Stimulated Depolarization Currents (TSDC) of cable pieces after the manufacturing, are presented. During alternative poling (65 kV RMS : 13 kV/mm RMS) of a 15 kV cable, only the XLPE cable stocks space charge after ten weeks. No charge has been observed in the XLPE-EA insulation after six months with the TSM technique. Some measurements have been carried out with a Scanning Electron Microscope (SEM) used in mirror mode. The bulk sample analysis by TSM and SEM used in mirror mode results are compared and conclusions are given for the XLPE-EA insulation in comparison with the XLPE. These results show differences between the two XLPE cables, and an evolution of the physical structure of the polyethylene insulation is highlighted.
Starting Page	508
Ending Page	511
File Size	353210
Page Count	4
File Format	PDF
ISBN	0780370538
DOI	10.1109/CEIDP.2001.963592
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2001-10-14
Publisher Place	Canada
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Space charge Power cables Scanning electron microscopy Polyethylene Dielectrics and electrical insulation Cable insulation Mirrors Voltage Underground power cables Thermal stresses
Content Type	Text
Resource Type	Article

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Influence of thermal treatment and residues on space charge accumulation in XLPE for DC power cable application

Development of XLPE-Moulded Joint for High Voltage XLPE Insulated Cable

DC insulating properties of newly developed XLPE cable

Temperature dependence of space charge distribution in XLPE cable

Morphology of novel XLPE cable systems

Diagnosis of XLPE Cable using the Recovery Voltage Measurement Method

Polarization phenomena in AC aged XLPE cable in humid environment

Space charge accumulation in two power cable grades of XLPE

Aging of XLPE cable insulation under combined electrical and mechanical stresses

Application of the Thermal Step Method to characterize the charge ability of XLPE insulation with and without ethylacrylate copolymer

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