Variation of steady-state thermal characteristics of transformers with OFWF cooling in service

被引：6
|
作者：
Radakovic, Z
Popovic, A
机构：
[1] Univ Stuttgart, Inst Power Transmiss & High Voltage Technol, D-70569 Stuttgart, Germany
[2] Power Comm Belgrade, Belgrade, Serbia Monteneg, Serbia
来源：
ELECTRIC POWER COMPONENTS AND SYSTEMS | 2003年 / 31卷 / 08期
关键词：
power transformers; thermal modeling; OFWF cooling;
D O I：
10.1080/15325000390219820
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：
The paper presents the thermal model for top oil temperature calculation in transformers with forced oil and water circulation. The model is completely based on the heat transfer theory. The thermal parameters change in time, due to the sedimentation of substances from the water and the oil to the heat exchanger surfaces. Fouling factors at the water and oil sides can be determined based on measurements. The results of procedure application on the hydro power station block transformer 2 x 190 MVA/380 MVA are given in the paper. The model is aimed at estimation of transformer loading possibilities, but also at maintenance or reconstruction planning purposes.
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页码：817 / 829
页数：13
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