An experimental study about the treeing phenomena in XLPE subjected to distorted voltages

Author

Guastavino, F. ; Centurioni, L. ; Coletti, G. ; Dardano, A. ; Torello, E.

Author_Institution

Electr. Eng. Dept., Univ. of Genova, Italy

fYear

2003

fDate

19-22 Oct. 2003

Firstpage

600

Lastpage

603

Abstract

In this work the influence of harmonic content of the voltage waveform on electrical treeing growth in XLPE (cross-linked polyethylene) is investigated. In particular the lifetimes of XLPE specimens, having a point plane electrode configuration, subjected to different distorted voltages containing 3^rd, 5^th and 7^th harmonics, are measured. A lifetime prediction model based upon the correlation between recorded durations and the maximum amplitude of the applied voltages is proposed. The model resulted well suited for the investigated cases. Digital images acquisition allowed to monitor treeing growth so to check wether bush or branch type of treeing had been growing during the tests.

Keywords

XLPE insulation; electric breakdown; partial discharges; trees (electrical); XLPE; cross-linked polyethylene; digital images acquisition; distorted voltages; harmonic content; lifetime prediction model; lifetimes; point plane electrode configuration; treeing phenomena; voltage waveform; Digital images; Distortion measurement; Electrodes; Harmonic distortion; Monitoring; Particle measurements; Polyethylene; Predictive models; Testing; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Insulation and Dielectric Phenomena, 2003. Annual Report. Conference on

Print_ISBN

0-7803-7910-1

Type

conf

DOI

10.1109/CEIDP.2003.1254926

Filename

1254926