HVDC中电力变压器非导磁构件谐波杂散损耗问题研究
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摘要
为研究高压直流输电系统(HVDC)换流变压器中非导磁构件杂散损耗的分布,文中基于TEAMProblem 21基准族中的P21a-0的简化模型进行了详细的实验研究与仿真分析,详细考察了不同激励下变压器中非导磁结构件杂散损耗的分布。针对不同频率的单一正弦激励和谐波激励,分别进行了详细的实验研究和数据分析。提出采用瞬态场法求解谐波磁场作用下非导磁钢板杂散损耗的实用措施,不同谐波磁场作用下非导磁钢板杂散损耗计算值与实验值具有较好的一致性。研究结果表明,在激励电流有效值相等的条件下,谐波电流含量越高非导磁钢板中涡流损耗越大;但是,谐波电流相位的变化不会对非导磁钢板中杂散损耗产生影响,这与导磁钢板的谐波磁损耗特性有明显差异。所得结果、结论有助于通过优化设计提高变压器的性能。
To study the stray loss of non-magnetic part of the converter transformer in high voltage direct current(HVDC)transmission system,the effects of different excitation patterns on the stray loss were investigated in detailbased on the simplified model of P21 a-0. The stray losses of the non-magnetic steel part were obtained experimental-ly by changing the content and phase of the harmonic. Some practical engineering-oriented approaches were pro-posed to solve the eddy-current problem under harmonic magnetic field excitation. The calculated and measuredstray loss values in different testing conditions are well in agreement. Conclusions are drawn that the phase of the har-monic current has no effect on the stray loss of the non-magnetic steel,which are different from ferromagnetic materi-al. When the effective values of excitation current are equivalent,the stray loss of the non-magnetic steel increaseswith the increase of the harmonic content.
To study the stray loss of non-magnetic part of the converter transformer in high voltage direct current(HVDC)transmission system,the effects of different excitation patterns on the stray loss were investigated in detailbased on the simplified model of P21 a-0. The stray losses of the non-magnetic steel part were obtained experimental-ly by changing the content and phase of the harmonic. Some practical engineering-oriented approaches were pro-posed to solve the eddy-current problem under harmonic magnetic field excitation. The calculated and measuredstray loss values in different testing conditions are well in agreement. Conclusions are drawn that the phase of the har-monic current has no effect on the stray loss of the non-magnetic steel,which are different from ferromagnetic materi-al. When the effective values of excitation current are equivalent,the stray loss of the non-magnetic steel increaseswith the increase of the harmonic content.
引文
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[2]高丹,衣丽葵,党艳阳,等.变压器箱沿局部过热的研究[J].变压器,2011,48(8):31-32.GAO Dan,YI Likui,DANG Yanyang,et al.Research onthe local overheating of transformer tank[J].Transformer,2011,48(8):31-32.
[3]韩晓东,翟亚东.高压直流输电用换流变压器[J].高压电器,2002,38(3):5-6.HAN Xiaodong,ZHAI Yadaong.Converter transformerused for HVDC transmission[J].High Voltage Apparatus,2002,38(3):5-6.
[4]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.CHENG Zhiguang,NORIO T,BE FORGHANI H,et al.Electromagnetic and thermal field modeling and applicationin electrical engineering[M].Beijing:Science Press,2009.
[5]赵志刚,刘福贵,程志光,等.HVDC直流偏磁电力变压器铜屏蔽中涡流损耗分析与仿真[J].高电压技术,2011,37(4):990-994.ZHAO Zhigang,LIU Fugui,CHENG Zhiguang,et al.Eddy-current loss of copper shielding under DC-biased condition inHVDC[J].High Voltage Engineering,2011,37(4):990-994.
[6]赵志刚,刘福贵,程志光,等.HVDC中电力变压器直流偏磁屏蔽效应研究[J].电工技术学报,2014,29(7):45-52.ZHAO Zhigang,LIU Fugui,CHENG Zhiguang,et al.Re-search on the shielding effects of power transformer underDC-biased condition in HVDC[J].Transactions of ChinaElectrotechnical Society,2014,29(7):45-52.
[7]王建民,刘建新,程志光,等.大型变压器拉板涡流损耗的建模与计算验证[J].华北电力大学学报,1998,25(1):15-20.WANG Jianmin,LIU Jianxin,CHENG Zhiguang,et al.Modeling of eddy current loss of core tie-plate in largetransformers and its validation[J].Journal of North ChinaElectric Power University,1998,25(1):15-20.
[8]李琳,崔翔,程志光,等.双标量磁位的表面阻抗法[J].中国电机工程学报,1996,16(2):87-91.LI Lin,CUI Xiang,CHENG Zhiguang,et al.A surface im-pedance method using two scalar magnetic potentials[J].Proceedings of the CSEE,1996,16(2):87-91.
[9]郭满生.大容量电力变压器杂散损耗的数值分析计算[J].变压器,2015,37(3):525-255.GUO Mansheng.Numerical analysis and calculation ofstray loss of large power transformer[J].Transformer,2015,37(3):525-255.
[10]额尔和木巴亚尔,李岩,张霄庭.电力变压器三维涡流场计算与屏蔽问题分析[J].高压电器,2007,47(10):69-73.Eerhemubayaer,LI Yan,ZHANG Xiaoting.Calculation of3D eddy current field and analysis of shielding in powertransformer[J].High Voltage Apparatus,2007,47(10):69-73.
[11]赵国峰,杨世天,闫增会.油箱损耗的仿真分析[J].变压器,2014,51(10):30-33.ZHAO Guofeng,YANG Shitian,YAN Zenghui.Simulationanalysis of tank loss[J].Transformer,2014,51(10):30-33.
[12]陈起超,刘文里,李航,等.变压器杂散损耗的三维有限元分析[J].黑龙江电力,2011,48(8):31-32.CHEN Qichao,LIU Wenli,LI Hang,et al.3D finite ele-ment analysis of stray loss in transformer[J].HeilongjiangElectric Power,2011,48(8):31-32.
[13]CHENG Z,TAKAHASHI N.Effect of variation of B-H prop-erties on loss and flux inside silicon steel lamination[J].IEEE Trans.on Magnetics,2011,47(5):1346-1349.
[14]CHENG Z,TAKAHASHI N,YANG S,et al.Eddy currentand loss analysis of multi-steel configuration and valida-tion[J].IEEE Trans.on Magnetics,2007,43(4):1737-1740.
[15]ZHANG Yanli,LIU Yang,LI Yumei,et al.A complex-val-ued rotating magnetic property model an its application toiron core loss calculation[J].IEEE Trans.on Magnetics,2014,50(2)::397-400.
[16]ZHAO Zhigang,LIU Fugui,CHENG Zhiguang,et al.Mea-surements and calculation of core-based B-H curve andmagnetizing current in DC-biased transformers[J].IEEETransactions on Applied Superconductivity,2010,20(3):1131-1134.
[17]CHENG Z,TAKAHASHI N,YANG S,et al.Eddy currentand loss analysis of multi-steel configuration and valida-tion[J].IEEE Trans.on Magnetics,2007,43(4):1737-1740.
[18]李永建,杨庆新,安金龙,等.软磁复合材料的三维磁特性检测实验研究[J].电工技术学报,2012,27(9):160-165.LI Yongjian,YANG Qingxin,AN Jinglong,et al.Three di-mensional magnetic properties measurement of soft magnet-ic composite materials[J].Transactions of China Electro-technical Society,2012,27(9):160-165.
[19]范亚娜,刘洋,马光,等.电力变压器两种磁屏蔽中磁通及损耗的仿真分析与验证[J].电工电能新技术,2015,34(7):32:36.FAN Yana,LIU Yang,MA Guang,et al.Analysis andvalidation of flux and iron loss inside two kinds of magneticshielding of power transformer[J].Advanced Technology ofElectrical Engineering and Energy,2015,34(7):32:36.
[20]杨素梅,程志光,朱晓荃,等.大型变压器屏蔽涡流场中杂散损耗的研究[J].高压电器,2007,43(6):451-453.YANG Sumei,CHENG Zhiguang,ZHU Xiaoquan,et al.Three dimensional eddy current field and stray-field loss inshields[J].High Voltage Apparatus,2007,43(6):451-453.