电力变压器漏磁场与杂散损耗计算的研究

摘要
图/表
参考文献
相关文章 (15)

全文: PDF (897 KB)
输出: BibTeX | EndNote (RIS)

摘要针对电力变压器漏磁场和杂散损耗计算以及局部过热的问题,笔者采用三维非线性涡流场有限元方法对一台电力变压器进行了漏磁场及杂散损耗的计算与分析。应用MagNet有限元分析软件计算得到变压器油箱及夹件的杂散损耗及损耗密度分布,为了克服杂散损耗以及损耗密度过大引起的局部过热问题,对变压器采取屏蔽措施,并分析屏蔽对变压器杂散损耗、损耗密度以及漏磁场的影响。分析结果表明,通过实际变压器与TEAMProblem21基准族模型验证了本文所采用损耗计算方法的计算值与测量值的误差在2%以内,从而验证了计算分析的正确性；采取屏蔽措施后变压器油箱和夹件的杂散损耗分别降低了38%和48.9%。

	服务

	把本文推荐给朋友
	加入我的书架
	加入引用管理器
	E-mail Alert
	RSS
	作者相关文章

关键词 ：局部过热, 磁屏蔽, 杂散损耗, 损耗密度, 漏磁场, 有限元法

Abstract：Leakage magnetic field, stray loss calculation and local overheating introduce great challenge for the power transformers, however, which need to be analyzed. In this paper, a 3D nonlinear finite element method is adopted to calculate and analyze the leakage magnetic field and stray loss of an actual power transformer. The stray loss and loss density distribution in tank wall and yoke clamps are calculated by MagNet FEM software. In order to overcome local overheating problem caused by excessive stray loss and loss density, magnetic shields are taken to the transformer and the effect of magnetic shields to the stray loss, loss density and leakage magnetic field of transformer are analyzed. The validity and effectiveness of the analysis is verified by calculation of the actual transformer and TEAM Problem 21 family. The results shows that the calculated value closely match the measured value, whose error is just less than 2%; with magnetic shields, the stray losses of transformer tank and yoke clamp decrease 38% and 48.9%.

Key words： Local overheating magnetic shields stray loss loss density leakage magnetic field finite element method

收稿日期: 2013-05-23 出版日期: 2014-05-22

PACS:

TM411.3

基金资助:国家自然科学基金（51177103）和辽宁省高校创新团队支持计划（LT2011002）资助项目

作者简介: 李龙女女, 1988年生, 博士研究生, 研究方向为电力变压器漏磁场、短路力及热问题。李岩男, 1962年生, 教授, 博士生导师, 研究方向为变压器、永磁电机以及工程电磁场问题。

引用本文:

李龙女, 李岩, 井永腾, 张博. 电力变压器漏磁场与杂散损耗计算的研究[J]. 电工技术学报, 2013, 28(2增): 122-127. Li Longnü, Li Yan, Jing Yongteng, Zhang Bo. Research of Leakage Magnetic Field and Stray Loss Calculation in Power Transformer. Transactions of China Electrotechnical Society, 2013, 28(2增): 122-127.

链接本文:

http://dgjsxb.ces-transaction.com/CN/Y2013/V28/I2增/122

[1] 郭满生, 梅桂华, 张喜乐, 等. 直流偏磁条件下单相三柱电力变压器的损耗计算[J]. 电工技术学报, 2010, 25(7): 67-71. Guo Mansheng, Mei Guihua, Zhang Xile, et al. Calculation of losses in single phase three limb transformer under DC-biasing[J]. Transactions of China Electrical Society, 2010, 25(7): 67-71.
[2] 郭满生, 梅桂华, 刘东升, 等. 直流偏磁条件下电力变压器铁心B-H曲线及非对称励磁电流[J]. 电工技术学报, 2009, 24(5): 46-51, 59. Guo Mansheng, Mei Guihua, Liu Dongsheng, et al. B-H curve based on core and asymmetric magnetizing current in DC-biased transformer[J]. Transactions of China Electrical Society, 2009, 24(5): 46-51, 59.
[3] 李国栋, 李培, 徐永海, 等. 变压器谐波损耗计算方法比较与仿真[J]. 电力系统保护与控制, 2010, 38(18): 63-68. Li Guodong, Li Pei, Xu Yonghai, et al. Comparison and simulation of calculation methods for transformer harmonic losses[J]. Power System Protection and Control, 2010, 38(18): 63-68.
[4] 郭健, 林鹤云, 徐子宏, 等. 电力变压器附加损耗计算及影响因素分析[J]. 高压电器, 2008, 44(6): 551-554. Guo Jian, Lin Heyun, Xu Zihong, et al. Calculation and analysis of additional loss in power transformer[J]. High Voltage Apparatus, 2008, 44(6): 551-554.
[5] 朱占新, 谢德馨, 张艳丽, 等. 大型电力变压器三维漏磁场与结构件损耗的时域分析[J]. 中国电机工程学报, 2012, 32(9): 156-160. Zhu Zhanxin, Xie Dexin, Zhang Yanli, et al. Time domain analysis of 3D leakage magnetic fields and structural part losses of large power transformer[J]. Proceedings of the CSEE, 2012, 32(9): 156-160.
[6] 张占龙, 王科, 李德文, 等. 变压器谐波损耗计算及影响因素分析[J]. 电力系统保护与控制, 2011, 39(4): 68-72, 78. Zhang Zhanlong, Wang Ke, Li Dewen, et al. Transformer harmonic loss calculation and influence factor analysis[J]. Power System Protection and Control, 2011, 39(4): 68-72, 78.
[7] 胡国辉, 何为, 王科. 配电变压器谐波附加损耗在线监测系统研究[J]. 电力系统保护与控制, 2011, 39(22): 62-67. Hu Guohui, He Wei, Wang Ke. Research on online monitoring system of distribution transformer harmonic additional loss[J]. Power System Protection and Control, 2011, 39(22): 62-67.
[8] 李琳, 崔翔, 张元禄, 等. 电力变压器三维漏磁场及铁芯拉板涡流损耗的计算[J]. 中国电机工程学报, 1999, 19(6): 33-36. Li Lin, Cui Xiang, Zhang Yuanlu, et al. Calculation of the 3d nonlinear magnetic field and eddy current loss of the plate in transformer[J]. Proceedings of the CSEE, 1999, 19(6): 33-36.
[9] 晏冰. 大型电力变压器三维漏磁场与热场耦合分析[D]. 沈阳: 沈阳工业大学, 2012.
[10] 刘东升, 张俊杰, 赵峰, 等. 特高压特大容量变压器三维涡流场计算和防止局部过热技术的研究[J]. 变压器, 2009, 46(9): 1-5. Liu Dongsheng, Zhang Junjie, Zhao Feng, et al. 3D eddy current field calculation and partial overheat protection technology research of UHV large transformer[J]. Transformer, 2009, 46(9): 1-5.
[11] 额尔禾木巴亚尔, 李岩, 孙昕, 等. 电力变压器三维涡流场计算与屏蔽问题分析[J]. 高压电器, 2011, 47(10): 69-74. Eerhemubayaer, Li Yan, Sun Xin, et al. Calculation of 3D eddy current field and analysis of shielding in power transformer[J]. High Voltage Apparatus, 2011, 47(10): 69-74.
[12] 杜永, 程志光, 颜威利, 等. 电力变压器全斜接缝叠片铁心工作条件下的磁性能模拟[J]. 电工技术学报, 2010, 25(3): 14-19. Du Yong, Cheng Zhiguang, Yan Weili, et al. Working magnetic property modeling of the power transformer laminated core with mitred joints[J]. Transactions of China Electrical Society, 2010, 25(3): 14-19.
[13] 张俊杰, 李琳, 刘兰荣, 等. 进入硅钢叠片内的漏磁通和附加损耗的模拟实验与仿真[J]. 电工技术学报, 2013, 28(5): 148-153. Zhang Junjie, Li Lin, Liu Lanrong, et al. Measurement and 3D FEM Analysis of Additional loss in laminated silicon sheets caused by leakage flux[J]. Transactions of China Electrical Society, 2013, 28(5): 148-153.
[14] 程志光, 高桥则雄, 博扎德·弗甘尼, 等. 电气工程电磁热场模拟与应用[M]. 北京: 科学出版社, 2009: 340-345.
[15] Takahashi N, Sakura T, Cheng Z. Nonlinear analysis of eddy current and hysteresis losses of 3-D stray field loss model (Problem 21)[J]. IEEE Trans. on Magnetics, 2011, 37(5):3672-3675.
[16] Takahashi N, Sakura T, Cheng Z. Nonlinear analysis of eddy current and hysteresis losses of 3-D stray field loss model (Problem 21)[J]. IEEE Transactions on Magnetics, 2011, 37(5):3672-3675.