树脂浇注干式变压器温度场及流场的数值计算

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Abstract The insulation property of cast resin dry-type transformers is closely related to its internal temperature field distribution. In order to analyze the temperature field of dry-type transformers more accurately, a mathematical model of cast resin dry type transformer temperature field and flow field was established based on building up the three-dimensional physical structure model. Meanwhile a numerical analysis was conducted for such coupled field with finite element method according to heat transfer theory and computational fluid dynamics(CFD). Comparison is carried out among various distribution of internal temperature field of dry type transformers on four conditions, that is without shell or with shell, by natural cooling or forced cooling. Moreover, the hottest position under different conditions are shown, as well as the temperature difference between the hottest point and the terminals. The weak links of dry-type transformers on operation are pointed out, which may give a theoretical base to locate the points for real-time temperature monitoring dry-type transformers.

Key words： keywords：Dry-type transformer temperature field flow field finite element method numerical calculation

Received: 20 September 2012 Published: 12 December 2013

PACS:

TM412

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	Articles by authors
	Xiong Lan
	Zhao Yanlong
	Li Jian
	Zhou Wei
	Zhu Qiang
	Liu Yu

Cite this article:

Xiong Lan,Zhao Yanlong,Li Jian等. Numerical Calculation of Temperature Field and Flow Field in Cast-Resin Dry-Type Transformer[J]. Transactions of China Electrotechnical Society, 2013, 28(1增): 138-145.

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http://dgjsxb.ces-transaction.com/EN/ OR http://dgjsxb.ces-transaction.com/EN/Y2013/V28/I1增/138

[1] 余涛. 干式电力变压器技术与应用[M]. 北京: 中国电力出版社, 2008: 1-7.
[2] 顺特电气有限公司. 树脂浇注干式变压器和电抗器[M]. 北京: 中国电力出版社, 2005: 44-52.
[3] 菅秀洋, 管湘芝, 徐明, 等. 干式变压器烧毁原因分析与配电系统技术改造[J]. 油气储运, 2009, 28(8): 73-76.
Jian Xiuyang, Guan Xiangzhi, Xu Ming, et al. Cause analysis of dry-type transformer’s burn-down and technical reform of power distribution system[J]. OGST, 2009, 28(8): 73-76.
[4] 刘金亮. 2起干式变压器烧毁的原因分析及对策[J]. 电气化铁道, 2011, 5: 26-28.
Liu Jinliang. Cause analysis and countermeasures of two dry-type transformers burnt[J]. Electrified Railway, 2011, 5: 26-28.
[5] Susa D, Lehtonen M, Nordman H. Dynamic thermal modeling of distribution transformers[J]. IEEE Transactions on Power Delivery, 2005, 20(3): 138-145.
[6] Ebrahim Rahimpour, Davood Azizian. Analysis of temperature distribution in cast-resin dry-type transformers[J]. Electrical Engineering, 2007(89): 301-309.
[7] Rahimpor E, Azizian D, Analysis of temperature distribution in cast-resin dry-type transformers[J]. Electrical Engineering, 2007, 89(4): 301-309.
[8] Davood Azizian, Mehdi Bigdeli, Mahmoud Fotuhi Firuzabad. A dynamic thermal based reliability model of cast-resin dry-type transformers[C]. Proceedings of the 2010 International Conference on Power System Technology, 2010.
[9] Eslamian M, Vahidi B, Eslamian A. Thermal analysis of cast-resin dry-type transformers[J]. Energy Conversion and Management, 2011(52): 2479-2488.
[10] Smolka Jacek, Nowak Andrzej J. Shape optimization of coils and cooling ducts in dry-type transformers using computational fluid dynamics and genetic algorithm[J]. IEEE Transactions on Magnetics, 2011, 47(6): 1726-1732.
[11] Lee Moonhee, Abdullah Hussein A, Jofriet Jan C, et al. Thermal modeling of disc-type winding for ventilated dry-type transformers[J]. Electric Power Systems Research, 2010, 80(1): 121-129.
[12] Lee Moonhee, Abdullah Hussein A, Jofriet Jan C, et al. Temperature distribution in foil winding for ventilated dry-type power transformers[J]. Electric Power Systems Research, 2010, 80(9): 1065-1073.
[13] 路长柏, 郭振岩, 刘文里, 等. 干式电力变压器理论与计算[M]. 沈阳: 辽宁科学技术出版社, 2003: 105-109.
[14] 杨世铭, 陶文栓. 传热学(第四版)[M]. 北京: 高等教育出版社, 2006: 41-45.
[15] Smolka Jacek, Bíró Oszkár, Nowak Andrzej J. Numerical simulation and experimental validation of coupled flow, heat transfer and electromagnetic problems in electrical transformers[J]. Archives of Computational Methods in Engineering, 2009, 16(3): 319-355.
[16] 王泽鹏, 张秀辉, 胡仁喜, 等. ANSYS12. 0热力学有限元分析[M]. 北京: 机械工业出版社, 2010: 42-53.
[17] Ortiz Carlos, Skorek Adam W, Lavoie Michel, et al. Parallel CFD analysis of conjugate heat transfer in a dry-type transformer[J]. IEEE Transactions on Industry Applications, 2009, 45(4): 1530-1534.
[18] Lee Moonhee, Abdullah Hussein A, Jofriet Jan C, et al. Air temperature effect on thermal models for ventilated dry-type transformers[J]. Electric Power Systems Research, 2011, 81(3): 783-789.
[19] 路义萍, 陈朋飞, 李俊亭, 等. 某新型空冷汽轮发电机转子通风方式的流场分析[J]. 中国电机工程学报, 2010, 30(6): 63-68.
Lu Yiping, Chen Pengfei, Li Junting, et al. Flow field analysis of new type ventilation method in one air-cooled turbo-generator rotor[J]. Proceeding of the CSEE, 2010, 30(6): 63-68.
[20] 王福军. 计算流体动力学分析[M]. 北京: 清华大学出版社, 2004: 119-124.