Title :
Study on the Influence of Copper Ion on Aging Rate of Transformer Oil-paper Insulation
Author :
Tang, Chao ; Yang, Li-jun ; Feng, Yun ; Liao, Rui-jin ; Li, Jian ; Sun, Cai-Xin
Author_Institution :
State Key Lab. of Power Transm. Equip., Chongqing Univ., Chongqing
Abstract :
In order to analysis the influence of copper ion on aging rate of oil-paper insulation, accelerate thermal aging experiments have been designed and performed on oil-paper insulation at two aging temperatures. A number of characteristic parameters such as dissolved gases, degree of polymerization, furfural content, water content and Acid number of oil have been tested periodically. The experiments results indicate that copper ion has a great influence on insulation paper and oil during the aging process; it delayed the degradation rate of insulation paper, which reduced the ratio of CO2/CO by about 11% at 80degC and more than 50% at 130degC. In addition, copper promotes the oxidation of the oil and accelerates the aging rate.
Keywords :
ageing; transformer insulation; CO2-CO; acid number; aging rate; copper ion; dissolved gases; furfural content; polymerization degree; temperature 130 degC; temperature 80 degC; thermal aging; transformer oil-paper insulation; Accelerated aging; Copper; Gases; Oil insulation; Performance analysis; Petroleum; Polymers; Power transformer insulation; Temperature; Water; Aging rate; Copper Ion; Oil-paper insulation; Power transformer;
Conference_Titel :
High Voltage Engineering and Application, 2008. ICHVE 2008. International Conference on
Conference_Location :
Chongqing
Print_ISBN :
978-1-4244-3823-5
Electronic_ISBN :
978-1-4244-2810-6
DOI :
10.1109/ICHVE.2008.4773999
