Diagnosis for aging degradation of insulating paper in power transformers by measuring the refractive index of cellulose fibers

Author

Yoshida, Masanobu ; Konishi, Yoshinori

Author_Institution

Chubu Electr. Power Co., Nagoya, Japan

fYear

2009

Firstpage

1

Lastpage

5

Abstract

His paper proposes a new diagnosis method for aging degradation of insulating paper in power transformer. We took note of cellulose fibers that are suspended in insulating oil in transformers as samples that could be useful for assessing the aging degradation of insulating paper in transformers. We would like to note that the thermal degradation of insulating paper accompanies the crystallization of cellulose fibers. In this paper, we used the dispersion staining method to investigate the relationship between degradation and crystallization of cellulose fiber.

Keywords

ageing; insulating materials; power transformers; refractive index; aging degradation; cellulose fibers; diagnosis; insulating paper; power transformers; refractive index; Aging; Crystallization; Dispersion; Oil insulation; Petroleum; Power measurement; Power transformer insulation; Power transformers; Refractive index; Thermal degradation; Aging; Cellulose; Diagnosis; Insulating Paper; Power Transformers; Refractive Index; degradation;

fLanguage

English

Publisher

ieee

Conference_Titel

PowerTech, 2009 IEEE Bucharest

Conference_Location

Bucharest

Print_ISBN

978-1-4244-2234-0

Electronic_ISBN

978-1-4244-2235-7

Type

conf

DOI

10.1109/PTC.2009.5281958

Filename

5281958