An improved failure model of oil-paper insulation at pulsating DC voltages

Author

Yan Wang ; Jian Li ; Lianwei Bao ; Peng Sun ; Chenmeng Xiang

Author_Institution

State Key Lab. of Power Transm. Equip. & Syst. Security & New Technol., Chongqing Univ., Chongqing, China

fYear

2013

fDate

20-23 Oct. 2013

Firstpage

176

Lastpage

179

Abstract

This paper presented the improved failure model by experimental and analysis results on electrical breakdown characteristics of oil-paper insulation at pulsating DC voltages. The time-to-breakdown of oil-paper specimens were measured by using constant-stress tests. The improved failure model was established and calculated by the parameters of Weibull model and the improved competing risk algorithm. It optimizes the faults of traditional two-parameter Weibull distribution when both time and voltage are considered as variables in estimating the lifetime of oil-impregnated paper.

Keywords

Weibull distribution; electric breakdown; failure analysis; impregnated insulation; insulating oils; paper; Weibull distribution; Weibull model; constant-stress tests; electrical breakdown; failure model; oil-impregnated paper; oil-paper insulation; pulsating DC voltages; time-to-breakdown; Breakdown voltage; Electric breakdown; Oil insulation; Power transformer insulation; Weibull distribution;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Insulation and Dielectric Phenomena (CEIDP), 2013 IEEE Conference on

Conference_Location

Shenzhen

Type

conf

DOI

10.1109/CEIDP.2013.6747429

Filename

6747429