Title :
Transient moisture equilibrium in oil-immersed transformer
Author :
Zhou, Lijun ; Wu, Guangning ; Liu, Jun ; Ma, Guo ; Lv, Wei ; Wang, Tao ; Gao, Zhongbao
Author_Institution :
Coll. of Electr. Eng., Southwest Jiaotong Univ., Chengdu, China
Abstract :
The final goal of the paper is to establish a transient moisture equilibrium model for estimating the moisture in paper of the running oil-immersed transformer. To this end, the presented model for oil-paper insulation is improved according to the insulation structure of oil-immersed transformer. The moisture diffusion process is divided into three steps, i.e., between paper and oil, between support insulation and oil, and in oil. In order to improve the accuracy of the model, the added moisture due to ageing of paper insulation is also taken into account.
Keywords :
moisture; paper; transformer oil; transient analysis; moisture diffusion process; oil-immersed transformer; oil-paper insulation; paper insulation ageing; transient moisture equilibrium model; Aging; Cascading style sheets; Diffusion processes; Ducts; Equations; Moisture; Oil insulation; Petroleum; Power transformer insulation; Temperature; Moisture equilibrium; oil-immersed transformer; transient model;
Conference_Titel :
Properties and Applications of Dielectric Materials, 2009. ICPADM 2009. IEEE 9th International Conference on the
Conference_Location :
Harbin
Print_ISBN :
978-1-4244-4367-3
Electronic_ISBN :
978-1-4244-4368-0
DOI :
10.1109/ICPADM.2009.5252479
