Title :
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
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;
Conference_Titel :
PowerTech, 2009 IEEE Bucharest
Conference_Location :
Bucharest
Print_ISBN :
978-1-4244-2234-0
Electronic_ISBN :
978-1-4244-2235-7
DOI :
10.1109/PTC.2009.5281958
