基于气流场分析的强迫风冷封闭母线热分析
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摘要
强迫风冷封闭母线为大容量电能的传递提供了解决方案。利用ANSYS仿真软件建立强迫风冷封闭母线热分析模型,通过电磁场、气流场、温度场的耦合分析实现了封闭母线温度场稳态计算,并采用多种湍流模型仿真结果与现场封闭母线温度实测结果进行对比,得到基于Standard k-ε湍流模型的仿真结果与实测结果误差在3℃以内,具有较好的一致性和准确性的结论。通过进一步分析发现:两边相进风系统冷却效果优于中间相进风系统;母线长度对温度分布影响较小;随着气流量的增大封闭母线的温度有逐渐下降的趋势。研究结果可为封闭母线尺寸设计、强迫风冷类型选取以及风机功率的选择提供参考。
The forced air-cooling enclosed bus provides a solution for the transmission of large capacity energy. Consequently, we established a thermal analysis model of forced air-cooling enclosed bus based on the ANSYS simulation software, and calculated the temperature field of enclosed bus by the coupling analysis of electromagnetic field, airflow field and temperature field. By comparing the simulation results of various turbulence models with the measured temperature results of field enclosed bus, it is concluded that the simulation results based on Standard k-ε turbulence model have a good consistency and accuracy, and the error between the simulation results and the measured results is less than 3 ℃.The further simulation results show that the cooling effect of the two-side phase inlet system is better than that of the single middle inlet system. The bus length has a negligible effect on the temperature distribution. With the increase of the air flow, the temperature of the enclosed bus gradually decreases. The research will provide a reference for the design of enclosed bus size, the selection of forced air cooling type, and the power selection of the fan.
The forced air-cooling enclosed bus provides a solution for the transmission of large capacity energy. Consequently, we established a thermal analysis model of forced air-cooling enclosed bus based on the ANSYS simulation software, and calculated the temperature field of enclosed bus by the coupling analysis of electromagnetic field, airflow field and temperature field. By comparing the simulation results of various turbulence models with the measured temperature results of field enclosed bus, it is concluded that the simulation results based on Standard k-ε turbulence model have a good consistency and accuracy, and the error between the simulation results and the measured results is less than 3 ℃.The further simulation results show that the cooling effect of the two-side phase inlet system is better than that of the single middle inlet system. The bus length has a negligible effect on the temperature distribution. With the increase of the air flow, the temperature of the enclosed bus gradually decreases. The research will provide a reference for the design of enclosed bus size, the selection of forced air cooling type, and the power selection of the fan.
引文
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[13]丁斌,徐耀良,杨宁,等.大电流封闭母线磁-流-热场耦合有限元分析[J].高压电器,2010,46(8):31-34.DING Bin,XU Yaoliang,YANG Ning,et al.Finite element analysis of couple magneto-fluid-thermal field for large current enclosed bus bar[J].High Voltage Apparatus,2010,46(8):31-34.
[14]邓秋,李震彪,尹小根,等.强制风冷干式空心电抗器的稳态温度场仿真计算[J].高电压技术,2013,39(4):839-844.DENG Qiu,LI Zhenbiao,YIN Xiaogen,et al.Steady thermal field simulation of forced air-cooled column-type air-core reactor[J].High Voltage Engineering,2013,39(4):839-844.
[15]任志安,郝点,谢红杰.几种湍流模型及其在FLUENT中的应用[J].化工装备技术,2009,30(2):38-40.REN Zhi’an,HAO Dian,XIE Hongjie.Several turbulence models and their applications in FLUENT[J].Chemical Equipment Technology,2009,30(2):38-40.
[16]郝艳捧,陈云,阳林,等.高压直流海底电缆电-热-流多物理场耦合仿真[J].高电压技术,2017,43(11):3534-3542.HAO Yanpeng,CHEN Yun,YANG Lin,et al.Coupled simulation on electro-thermal-fluid multiple physical fields of HVDC submarine cable[J].High Voltage Engineering,2017,43(11):3534-3542.
[17]汪倩,屈建宇,吴刚,等.配电开关柜温升特性的多物理场仿真和实验[J].高电压技术,2016,42(6):1775-1780.WANG Qian,QU Jianyu,WU Gang,et al.Multi-physical field simulation and experiment of temperature-rise characteristics of switchgear compartment[J].High Voltage Engineering,2016,42(6):1775-1780.
[18]陈嵘,杨松伟,程泳,等.干式空心并联电抗器电磁-流体-温度场耦合计算与分析[J].高电压技术,2017,43(9):3021-3028.CHEN Rong,YANG Songwei,CHENG Yong,et al.Electromagnetic-fluid-temperature coupling calculation and analysis of dry-type air-core shunt reactor[J].High Voltage Engineering,2017,43(9):3021-3028.
[2]KUSIAK D,PI?TEK Z,SZCZEGIELNIAK T.The asymmetry of the magnetic field distribution in a flat unshielded 3-phase high current busduct[J].Acta Technica Jaurinensis,2013,6(1):49-55.
[3]CAO M,BIRINGER P P.Asymmetry in bus bars due to proximity effects[J].Journal of Applied Physics,1990,67(9):4729-4731.
[4]CONEYBEER R T,BLACK W Z,BUSH R A.Steady-state and transient ampacity of bus bar[J].IEEE Transactions on Power Delivery,1994,9(4):1822-1829.
[5]鄢来君,张颖.大电流封闭母线温升计算[J].高电压技术,2008,34(1):201-203.YAN Laijun,ZHANG Ying.Calculation of temperature rise of large current closed bus[J].High Voltage Engineering,2008,34(1):201-203
[6]王俭.高垂直段风冷封闭母线三维场仿真分析及结构优化设计[D].沈阳:沈阳工业大学,2009.WANG Jian.Three-dimensional field simulation analysis and structural optimization design of high vertical air-cooled sealed bus[D].Shenyang,China:Shenyang University of Technology,2009.
[7]张友军.大型现场强迫风冷封闭母线及其冷却系统的选择[D].济南:山东大学,2008.ZHANG Youjun.Selection of forced air-cooled closed bus and its cooling system in large nuclear power plant[D].Jinan,China:Shandong University,2008.
[8]张兴娟,曹乃承,杨春信,等.垂直布置的母线温度场计算及分析[J].中国电机工程学报,2000,20(8):11-13.ZHANG Xingjuan,CAO Naicheng,YANG Chunxin,et al.The temperature calculation and analysis of the long vertical buses[J].Proceedings of the CSEE,2000,20(8):11-13
[9]陆朝荣.离相封闭母线场域仿真分析及制造装配技术研究[D].镇江:江苏大学,2007.LU Zhaorong.Simulation analysis and manufacturing assembly technology of off-phase closed bus field[D].Zhenjiang,China:Jiangsu University,2007.
[10]杨世铭,陶文铨.传热学[M].4版.北京:高等教育出版社,2006:162-227.YANG Shiming,TAO Wenquan.Heat transfer[M].4th ed.Beijing,China:Higher Education Press,2006:162-227.
[11]KIM S W,KIM H H,HAHN S C,et al.Coupled finite-element-analytic technique for prediction of temperature rise in power apparatus[J].IEEE Transactions on Magnetics,2002,38(2):921-924.
[12]武安波,张国刚,王建华,等.基于磁场-流场-温度场耦合计算的母线槽热性能分析[J].电工电能新技术,2002,21(3):62-66.WU Anbo,ZHANG Guogang,WANG Jianhua,et al.Thermal performance analysis of busway based on coupling calculation of magnetic field-flow field-temperature field[J].Advanced Technology of Electrical Engineering and Energy,2002,21(3):62-66.
[13]丁斌,徐耀良,杨宁,等.大电流封闭母线磁-流-热场耦合有限元分析[J].高压电器,2010,46(8):31-34.DING Bin,XU Yaoliang,YANG Ning,et al.Finite element analysis of couple magneto-fluid-thermal field for large current enclosed bus bar[J].High Voltage Apparatus,2010,46(8):31-34.
[14]邓秋,李震彪,尹小根,等.强制风冷干式空心电抗器的稳态温度场仿真计算[J].高电压技术,2013,39(4):839-844.DENG Qiu,LI Zhenbiao,YIN Xiaogen,et al.Steady thermal field simulation of forced air-cooled column-type air-core reactor[J].High Voltage Engineering,2013,39(4):839-844.
[15]任志安,郝点,谢红杰.几种湍流模型及其在FLUENT中的应用[J].化工装备技术,2009,30(2):38-40.REN Zhi’an,HAO Dian,XIE Hongjie.Several turbulence models and their applications in FLUENT[J].Chemical Equipment Technology,2009,30(2):38-40.
[16]郝艳捧,陈云,阳林,等.高压直流海底电缆电-热-流多物理场耦合仿真[J].高电压技术,2017,43(11):3534-3542.HAO Yanpeng,CHEN Yun,YANG Lin,et al.Coupled simulation on electro-thermal-fluid multiple physical fields of HVDC submarine cable[J].High Voltage Engineering,2017,43(11):3534-3542.
[17]汪倩,屈建宇,吴刚,等.配电开关柜温升特性的多物理场仿真和实验[J].高电压技术,2016,42(6):1775-1780.WANG Qian,QU Jianyu,WU Gang,et al.Multi-physical field simulation and experiment of temperature-rise characteristics of switchgear compartment[J].High Voltage Engineering,2016,42(6):1775-1780.
[18]陈嵘,杨松伟,程泳,等.干式空心并联电抗器电磁-流体-温度场耦合计算与分析[J].高电压技术,2017,43(9):3021-3028.CHEN Rong,YANG Songwei,CHENG Yong,et al.Electromagnetic-fluid-temperature coupling calculation and analysis of dry-type air-core shunt reactor[J].High Voltage Engineering,2017,43(9):3021-3028.