Disequilibrium moisture partition in oil-paper insulation

被引：0
|
作者：
Zhou, Li-Jun [1 ]
Tang, Hao [1 ]
Zhang, Xue-Qin [1 ]
Wu, Guang-Ning [1 ]
机构：
[1] School of Electrical Engineering, Southwest Jiaotong University, Chengdu 610031, China
来源：
Zhongguo Dianji Gongcheng Xuebao/Proceedings of the Chinese Society of Electrical Engineering | 2008年 / 28卷 / 07期
关键词：
Boundary conditions - Computer simulation - Moisture - Partial differential equations;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
On basis of Fick's second law, a partial differential equation is designed to analyze the moisture diffusing in the oil-paper insulation. By analyzing the boundary condition and solving the equation, a set of curves for disequilibrium moisture concentration distributing along thick direction in paper at regular intervals are obtained. By integrating the curves, a curve for average moisture concentration in paper changing with time is obtained. Both the numerical calculation and experiment both show the curve is exponent, but the equilibration time is affected by the temperature, the equilibration moisture, the thickness of the paper, and the permeating modes. By the compute simulation, the four effects are validated independent, and the equation for counting the equilibrium time is obtained.
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页码：134 / 140
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