Investigation of Temperature Effect on Electrical Trees in XLPE Cable Insulation
Paper in proceedings, 2012

In this paper, combined with the methods of real-time microscopic digital imaging and partial discharge (PD) continuous measurements, the effect of temperature on electrical tree propagation and PDs characteristics in XLPE cable insulation was investigated using an embedded needle electrode arrangement over a range of applied voltages from 9 to 15 kV rms. The temperature of the experiments varied from 10 C up to 70 C, which lay within the rated operating temperature range of XLPE cables. The results obtained show that temperature has dominant effect on electrical tree shapes and growth time. As the electrical tree shapes at lower voltages are influenced by the change of tree channel conductivity, this process appeared to be accelerated greatly by increase of experimental temperature. The tree growth time at higher voltages was decreased at higher temperatures due to the change of material morphology and it was accompanied by intensive PD activity.

Author

Xiangrong Chen

Chalmers, Materials and Manufacturing Technology, High Voltage Engineering

Hu L.B

Xi'an Jiaotong University

Xu Y

Xi'an Jiaotong University

X. L. Cao

Xi'an Jiaotong University

Stanislaw Gubanski

Chalmers, Materials and Manufacturing Technology, High Voltage Engineering

2012 IEEE Conference on Electrical Insulation and Dielectric Phenomena, CEIDP 2012, Montreal, 14-17 October 2012

0084-9162 (ISSN)

Vol. 2 612-615

Subject Categories

Materials Engineering

Other Electrical Engineering, Electronic Engineering, Information Engineering

Areas of Advance

Energy

DOI

10.1109/CEIDP.2012.6378855

ISBN

978-1-4673-1250-9

More information

Created

10/7/2017