Disequilibrium Of Moisture In Oil-Pressboard Insulation Under Transient Temperature Condition

被引：0
|
作者：
Wang, Wei [1 ]
Wang, Xin [1 ]
Ma, Zhiqing [1 ]
Li, Chengrong [1 ]
Liu, Shaoyu [2 ]
Wu, Yanwei [2 ]
Hao, Zhen [2 ]
Ma, Jixian [2 ]
Long, Kaihua [2 ]
机构：
[1] North China Elect Power Univ, Beijing Key Lab HV & EMC, State Key Lab Alternate Elect Power Syst Renewabl, Beijing, Peoples R China
[2] North China Elect power Res Ins, High voltage Res Inst, Beijing, Peoples R China
来源：
PROCEEDINGS OF 2012 IEEE INTERNATIONAL CONFERENCE ON CONDITION MONITORING AND DIAGNOSIS (IEEE CMD 2012) | 2012年
关键词：
Moisturet; oil-pressboard; disequilibrium; transient temperature;
D O I：
暂无
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
Moisture has strong influence on insulation performance of oil-pressboard system in power transformer. Moisture in oil and pressboard can be obtained from Oommen paper oil equilibrium curves under constant temperature condition. Temperature of power transformer is related to its load and the atmospheric temperature. If atmospheric temperature or load changed, oil-pressboard insulation will work under transient temperature condition. In present, there are few attentions to the disequilibrium of moisture in oil-pressboard insulation under transient temperature condition. In this paper, a test system has been set up which consists of programmable oven, Karl Fischer moisture meter and oil-pressboard samples. Two kinds of transient temperature conditions have been simulated which were 80 degrees C to 20 degrees C in 5 hours, 20 degrees C to 80 degrees C in 5 hours. Moisture in oil and various thick pressboards from 0.5mm to 5mm have been measured in these two conditions. The results have been presented and analyzed.
引用
收藏
页码：894 / 896
页数：3
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