Comparison of the insulation characteristics of environmentally-friendly oils

Author

Yasuda, Koji ; Arazoe, Satoshi ; Igarashi, Tetsuo ; Yanabu, Satoru ; Ueta, Genyo ; Okabe, Shigemitsu

Author_Institution

Dept. of Electr. Eng., Tokyo Denki Univ., Tokyo, Japan

Volume

17

Issue

3

fYear

2010

fDate

6/1/2010 12:00:00 AM

Firstpage

791

Lastpage

798

Abstract

We have investigated the performance of silicone oil as an insulation medium with the aim of developing environmentally-friendly, flame-retardant electric power equipment. In this paper, the insulation characteristics of silicone oil and ester oil, which is the alternative insulating oil candidate, have been investigated and compared. The insulation characteristics examined in this paper are the streaming electrification characteristics including electrification phenomena generated when an insulating oil streams, dielectric breakdown characteristics with increasing temperature and the surface breakdown characteristic when the insulator is placed between electrodes. The range of temperature investigated was 30 to 130 °C. Both kraft and aramid paper were used for the insulator. In the comparison between silicone and ester oil, it was found that the insulation performance of the ester oil was better than that of the silicone oil. We have considered possible mechanisms for these results.

Keywords

Biodegradation; Chemicals; Dielectric breakdown; Dielectrics and electrical insulation; Electrodes; Minerals; Oil insulation; Petroleum; Power transformer insulation; Temperature; Silicone oil, ester oil, streaming electrification, dielectric breakdown, electric power equipment;

fLanguage

English

Journal_Title

Dielectrics and Electrical Insulation, IEEE Transactions on

Publisher

ieee

ISSN

1070-9878

Type

jour

DOI

10.1109/TDEI.2010.5492252

Filename

5492252