A Physical Model for the Improvement of DGA-based Condition Assessment of Power Transformers

被引：0
|
作者：
Riedmann, Christof [1 ]
Schichler, Uwe [1 ]
机构：
[1] Graz Univ Technol, Inst High Voltage Engn & Syst Performance, Graz, Austria
来源：
2020 8TH INTERNATIONAL CONFERENCE ON CONDITION MONITORING AND DIAGNOSIS (CMD 2020) | 2020年
关键词：
transformers; dissolved gas analysis; DGA; monitoring; degassing; film theory; diffusion; mass transfer;
D O I：
暂无
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
At the phase interface in the conservator tank of power transformers, gas losses into the gas phase can occur. Among other approaches, film theory offers a method to quantify such gas losses. The model based on film theory is described in this paper and an analogy to Ohm's law of electrical engineering is shown. In addition, measurements are presented, which prove that the determination of the necessary parameters for the model is adequate but requires further development of the methods. An example of degassing at a phase interface in a transformer model was established and analysed.
引用
收藏
页码：106 / 109
页数：4
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