NDLI: Research of Dielectric spectroscopy on insulation ageing assessment of XLPE cables

Content Provider	IEEE Xplore Digital Library
Author	Ji Liu You Xu Xinlao Wei Xiujing Li
Copyright Year	2013
Description	Author affiliation: State Key Lab. Breeding Base of Dielectr. Eng., Harbin Univ. of Sci. & Technol., Harbin, China (Ji Liu; You Xu; Xinlao Wei; Xiujing Li)
Abstract	In this paper, the model cables are studied by means of frequency domain spectroscopy (FDS) which involves the measurement of capacitance, the real permittivity and dissipation factor as a function of frequency. Firstly, XLPE cable samples were carried out accelerated thermal ageing at 135 °C. Then, frequency domain spectroscopy was investigated under laboratory condition, including different degree of thermal ageing and different test temperatures. Mechanism was analyzed using the theory of dielectric relaxation in solids. From the data and curves, it can be shown that the capacitance and dissipation factor are increased with the ageing time, and dissipation factor is increased with the decreasing of frequency in specific frequency range. Moreover, capacitance and real part of permittivity were found to be more sensitive to temperature variation, thus temperature is a key factor which must be taken account when using FDS method for diagnosing cable insulation. The investigation of dielectric spectroscopy is effective and convenient for ageing assessment of XLPE cables.
Sponsorship	IEEE Dielectr. Electr. Insul. Soc.
Starting Page	140
Ending Page	143
File Size	211894
Page Count	4
File Format	PDF
ISBN	9781479925971
DOI	10.1109/CEIDP.2013.6747454
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2013-10-20
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Dielectrics Aging Cable insulation Permittivity Frequency measurement Temperature measurement Dielectric relaxation XLPE cable FDS Thermal ageing
Content Type	Text
Resource Type	Article

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