全部 标题 作者
关键词 摘要

OALib Journal期刊
ISSN: 2333-9721
费用:99美元

查看量下载量

相关文章

更多...
高压电器  2015 

基于有限元法的干式变压器多物理场分析计算

DOI: DOI:10.13296/j.1001-1609.hva.2015.08.018, PP. 107-113

Keywords: 干式变压器,耦合场,磁场,流体―温度场,过负荷能力

Full-Text   Cite this paper   Add to My Lib

Abstract:

变压器的正常稳定运行对电力系统有着重要意义,而温度是衡量变压器运行状态的一个重要指标。笔者基于有限元的耦合场计算得到了干式变压器的温度分布。首先,通过三维磁场的计算得到变压器的各部分损耗,然后将损耗作为载荷加载至二维稳态流体―温度场的模型中计算对应的温度分布,通过变压器样机的测温实验验证了该方法的准确性。同时也分析了对应的二维瞬态流体―温度场,最后将变压器最大允许运行温度值作为参考,得到了变压器不同过负荷情况时的允许运行时间,结果表明该干式变压器在10%过负荷情况下能正常持续工作,而在过负荷分别为20%、30%、40%和50%的情况下最大允许运行时间分别是127、68、26、8min。该工作为同类型干式变压器的过负荷运行能力提供了可参考的依据。

References

[1]  熊 兰,赵艳龙. 树脂浇注干式变压器温升分析与计算[J]. 高电压技术,2013,39(2):265-271. XIONG Lan,ZHAO Yanlong. Temperature rise analysis and calculation of cast resin dry-type transformers[J]. High Voltage Engineering,2013,39(2):265-271.
[2]  曲?宇,刘文里. 干式变压器绕组温度场的二维数值分析[J]. 变压器,2011 48(12):21-25. QU Deyu,LIU Wenli. 2D numerical analysis of temperature field of dry-type transformer winding[J]. Transformer,2011,48(12):21-25.
[3]  杜 莉,王秀春. 油浸式变压器内流场和温度场的数值模拟研究[J]. 变压器,2012,49(1):19-22. DU Li,WANG Xiuchun. Numercial simulation research on inner flow and temperature fields in oil-immersed transformer[J]. Transformer,2012,49(1):19-22.
[4]  唐宗华,谭震宇,孙树敏,等. 基于耦合场的金属氧化物限压器的温度计算与特性分析[J]. 高电压技术,2013,39(3):733-740. TANG Zonghua,TAN Zhenyu,SUN Shumin,et al. Temperature calculation and property anslysis of metal oxide varistor based on coupled fields[J]. High Voltage Engineering,2013,39(3):733-740.
[5]  姚育成,蔡定国. 干式变压器温度场数值模拟[J]. 变压器,2012,49(8):31-33. YAO Yucheng,CAI Dingguo. Numerical simulation of temperature field of dry-type transformer[J]. Transformer,2012,49(8):31-33.
[6]  ZHANG Yujiao,RUAN Jiangjun,HUANG Tao,et al. Calculation of temperature rise in air-cooled induction motors through 3-D coupled electromagnetic fluid-dynamical and thermal finite-element analysis[J]. IEEE Transactions on Magnetics,2012,48(2):1047-1050.
[7]  HO S L,LI Y,LIN X,et al. Calculations of eddy current, fluid, and thermal fields in an air insulated bus duct system[J]. IEEE Transactions on Magnetics,2007,43(4):1433-1436.
[8]  HO S L,LI Y,LIN X,et al. A 3-D study of eddy current field and temperature rises in a compact bus duct system[J]. IEEE Transactions on Magnetics,2006,42(4):987-990.
[9]  AHN H M,LEE B J,HAHN S C. An efficient investigation of coupled electromagnetic-thermal-fluid numerical model for temperature rise prediction of power transformer[C]//2011 International Conference on Electrical Machines and Systems (ICEMS). [S.l.]:IEEE,2011:1-4.
[10]  LIN D,ZHOU P,FU W N,et al. A dynamic core loss model for soft ferromagnetic and power ferrite materials in transient finite element analysis[J]. IEEE Transactions on Magnetics, 2004,40(2):1318-1321.
[11]  BERTOTTI G,FIORILLO F,SOARDO G. Dependence of power losses on peak magnetization and magnetization frequency in grain-oriented and non-oriented 3% SiFe[J]. IEEE Transactions on Magnetics,1987,23(5):3520-3522.
[12]  BERTOTTI G.General properties of power losses in soft ferromagnetic materials[J]. IEEE Transactions on Magnetics,1988,24(1):621-630.
[13]  MARIGNETTI F,COLLI V D,COIA Y. Design of axial flux PM synchronous machines through 3-D coupled electromagnetic thermal and fluid-dynamical finite-element analysis[J]. IEEE Transactions on Industrial Electronics, 2008,55(10):3591-3601.
[14]  SHANEL M,PICKERING S J,LAMPARD D. Application of computational fluid dynamics to the cooling of salient pole electrical machines[C]//International Conference on Electrical Machines. Espoo Finland:Helsinki University of Technology,2000:338-342.
[15]  FAIZ J,GANJI B,CARSTENSEN C E,et al. Temperature rise analysis of switched reluctance motors due to electromagnetic losses[J]. IEEE Transactions on Magnetics,2009,45(7):2927-2934.
[16]  郑书生,陈金祥,李成榕,等. 变压器绕组对局部放电特高频定位方法的影响[J]. 高电压技术,2013,39(2):324-329. ZHENG Shusheng,CHEN Jinxiang,LI Chengrong,et al. Influence of windings on locating partial discharge in transformers by using ultra high frequency method[J]. High Voltage Engineering,2013,39(2):324-329.
[17]  金福宝,周远祥,贺俊杰,等. 变压器油道内油流带电现象与油道电场的仿真计算[J]. 高电压技术,2013,39(6):1367-1373. JIN Fubao,ZHOU Yuanxiang,HE Junjie,et al. Streaming electrification measurement and electric field simulation in oil duct of power transformer[J]. High Voltage Engineering,2013,39(6):1367-1373.
[18]  JING Yongteng,LI Yan. Eerhemubayaer,eddy current losses calculation and shields of high voltage auto-transformer[J]. High Voltage Engineering,2012,38(8):1988-1994.
[19]  PARK B G,KIM T S,LEE K J,et al. Magnetic-field analysis on winding disposition of transformer for distributed high-speed train applications[J]. IEEE Transactions on Magnetics,2010,46(6):1766-1769.

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133