《机电工程》杂志社科技期刊核心期刊论文投稿机电一体化机械、仪表电工自动化、计算机浙江大学主办

《机电工程》杂志，月刊( 详细... )

中国标准连续出版物号： ISSN 1001-4551 CN 33-1088/TH
主办单位：浙江省机电集团有限公司
浙江大学
主编：陈晓
副主编：唐任仲、罗向阳(执行主编)
总经理：罗向阳
出版：浙江《机电工程》杂志社有限公司
地址：杭州市上城区延安路95号浙江省机电集团大楼二楼211、212室
电话Tel：+86-571-87041360、87239525
E-mail：meem_contribute@163.com
国外发行：中国国际图书贸易总公司
订阅：全国各地邮局 国外代号：M3135
国内发行：浙江省报刊发行局
邮发代号：32-68
广告发布登记证：杭上市管广发G-001号

在线杂志	当前位置：机电工程 >>在线杂志

油浸式大型变压器热点温度的动态模型

作者：海瑛钱苏翔严拱标日期：2007-03-05/span> 浏览：4235 查看PDF文档

油浸式大型变压器热点温度的动态模型

海瑛¹ 钱苏翔 ² 严拱标³

(1 ，2浙江嘉兴学院机电工程分院，314001；3 浙江大学机电工程学院310027)

摘要：文章考虑了油浸变压器油粘度、损耗随温度的变化的情况后，基于热传导理论和不同情况下非线性热阻的定义，推导出了可估算不同类型变压器绕组热点温度的动态模型，通过ONAN制冷变压器的实测数据和专用模型的验证表明，该模型是正确、有效的。

关键词：热点温度，顶点油，底部油，非线性热阻。

Dynamic Modelling of Hot-Spot Temperature inOil-Immersed Power Transformers

HAI Ying ¹ , Qian Su Xiang² , Yan Gong Biao³

(1,2-School of Mechanical Engineering , Jiaxing University jiaxing 314001,

3- School of Mechanical Engineering，Zhe jiang　University, hangzhou 314000)

Abstract :This paper presents hot-spot thermal models taking into account that oil viscosity changes and loss variation with temperature.The models are based on heat transfer theory and a new definition of nonlinear thermal resistances at different locations within a power transformer. The new thermal models will be validated using experimental and expert model on a ONAN-cooled unit. The results verified the accuracy of thermal models.

Key words: Hot-spot temperature, power transformer, top-oil temperature , bottom-oil temperature, nonlinear oil thermal resistance

参考文献：

[1]IEEE Std。C57。91-1995。Guide for loading mineral-oil-immersed transforms [S].

[2] H. Nordman, N. Räfsbäck, and D. Susa, Temperature responses to step changes in the load current of power transformers[J]. IEEE Trans. Power Del., Oct. 2003. 18( 4): 1110–1117.

[3] He Q。SiJ。Tylavsky D J。Predictionｏｆtop-oil temperature for transformers　using neural network [J].IEEE Trans. Power Del. Jan. 2001.15(4): 1205–1211.

[4] H. Nordman and M. Lahtinen,.Thermal overload tests on a 400 MVA power transformer with a special 2.5 pu short time loading capability. IEEE Trans. Power Del. Jan. 2003.18(1): 107–112.

[５]杨世铭.传热学[M].高等教育出版社(第二版). 1992.6

[6] L. W. Pierce.An investigation of the thermal performance of an oil filled transformer winding. IEEE Trans. Power Del.. Jul. 1992. 7(3) :1347–1358.

[7] K. Karsai, D. Kerenyi, and L. Kiss.Large Power Transformers. New York: Elsevier. 1987.

[8] Nordman H. and Lahtinen M. Thermal overload tests on a 400-MVA power transformer with a special 2.5-p.u. Short time loading capability. IEEE Transactions on Power Delivery. Jan 2003. 18 (1) :107 – 112.

[9] J. Aubin.and Y. Langhame. Effect of oil viscosity on transformer loading capability at low ambient temperatures. IEEE Transactions on Power Delivery. April 1992.7(2):516-524.

[10]刘卫国.陈昭平.张颖.MATLAB程序设计与应用[M].高等教育出版社.2006.6

[11] Radakovic Z.,Feser K. A new method for the calculation of the hot-spot temperature in power transformers with ONAN cooling. IEEE Transactions on Power Delivery, October 2003.18( 4):1284-1292