Diagnostics of insulation deterioration of ethylene propylene rubber using an acoustic emission technique

Author

Sakoda, Tatsuya ; Nakashima, Toshihiko ; Nainggolan, Jannus Maurits ; Otsubo, Masahisa ; Kurihara, Satoshi ; Nagasato, Shinya ; Yarimitsu, Takayoshi

Author_Institution

Dept. of Electr. & Electron. Eng., Univ. of Miyazaki, Miyazaki, Japan

Volume

17

Issue

4

fYear

2010

fDate

8/1/2010 12:00:00 AM

Firstpage

1242

Lastpage

1248

Abstract

The aim of this study is to investigate the relationship between lowering of the insulation performance of ethylene propylene rubber (EPR) used as a covering material of a cross-linked polyethylene (XLPE) cable and partial discharges (PDs) and to establish a diagnostic technique using an acoustic emission (AE) sensor. An accelerated deterioration test was carried out and then the detected AE signals were evaluated. The results showed that not only the intensity of the AE signal but also the number of counted AE signals of more than a critical value was very useful for diagnosing the EPR. We also proposed a diagnostic sequence using an AE technique.

Keywords

Acoustic emission, Fault diagnosis, Insulator testing, Power cable testing; Acoustic emission; Acoustic materials; Acoustic sensors; Acoustic testing; Attenuation; Cable insulation; Electrodes; Insulation; Joints; Life estimation; Materials; Paramagnetic resonance; Partial discharges; Polyethylene; Power cables; Rubber;

fLanguage

English

Journal_Title

Dielectrics and Electrical Insulation, IEEE Transactions on

Publisher

ieee

ISSN

1070-9878

Type

jour

DOI

10.1109/TDEI.2010.5539696

Filename

5539696