Analyzing dynamic of moisture equilibrium in oil-paper insulation in power transformers for efficient drying

被引：7
|
作者：
Akbari, A. [1 ]
DehPahlevan, S. [1 ]
Borsi, H. [2 ]
机构：
[1] KN Toosi Univ Technol, Tehran, Iran
[2] Inst Elect Power Syst, High Voltage Engn Sect Schering Inst, Hannover, Germany
来源：
2006 ANNUAL REPORT CONFERENCE ON ELECTRICAL INSULATION AND DIELECTRIC PHENOMENA | 2006年
关键词：
D O I：
10.1109/CEIDP.2006.311990
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 equilibrium in oil-paper insulation is dependent on temperature and the condition of power transformer. There exist balance charts for the percent of moisture in oil or in paper insulation at different temperatures in steady state but the dynamic of immigrating water from oil in to paper insulation and vice versa is very complex so an appropriate mathematical model has to be used to analyze the phenomena. In the other hand the dynamic of water exchange between oil and cellulose in different conditions is very important for optimum drying of aged power transformers particularly when drying performed on-site. In this contribution the equilibrium of moisture in oil-paper insulation based on temperature and transformer parameters is analyzed and the application of this analysis is illustrated for an efficient on-line drying system for power transformers.
引用
收藏
页码：545 / 548
页数：4
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