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  2014 

基于耦合场数值计算的电抗器通风结构改进

, PP. 62-67

Keywords: 干式空心电抗器, 磁场―电路耦合,有限元分析, 流场―温度场, 结构优化设计

Full-Text   Cite this paper   Add to My Lib

Abstract:

干式空心电抗器作为电力系统中的广泛使用的电气设备,起着协调系统无功平衡、限制过电压、限制短路电流和平波等作用。在实际运行过程中,电抗器往往会因为外部环境、自身结构等原因产生局部过热、绝缘老化甚至烧损等现象。笔者以某可控高压并联电抗器二次侧辅助电抗器为研究对象,通过建立场―路耦合模型计算了该干式空心电抗器各个包封绕组产生的焦耳热生成率,以此作为流场―温度场有限元分析的输入,求解出了电抗器的温度场分布。针对电抗器局部温升偏高的计算结果,对通风结构做出了改进并进行了验算。计算结果表明,结构改进后的电抗器温升明显降低,研究结果能够为电抗器的设计和结构优化提供参考。

References

[1]  周勤勇,郭 强,卜广全,等. 可控电抗器在我国超/特高压电网中的应用[J]. 中国电机工程学报,2007,27(7):1-6. ZHOU Qinyong, GUO Qiang, BU Guangquan, et al. Application of controllable reactors in China’s power grid at extra and ultra voltage level[J]. Proceedings of the CSEE,2007,27(7):1-6.
[2]  陈 湘,童 泽,欧阳广. 磁饱和式可控电抗器的工作特性及其仿真研究[J]. 高压电器,2009,45(2):53-56. CHEN Xiang, TONG Ze, OUYANG Guang. Operational characteristics and simulation of the magnetic-saturated controllable reactor[J]. High Voltage Apparatus,2009, 45(2): 53-56.
[3]  郭振岩,李文海. 电抗器理论与计算[M]. 辽宁:沈阳出版社,2009. GUO Zhenyan, LI Wenhai. The theory and calculation of reactor[M]. Liaoning: Shenyang Press, 2009.
[4]  刘海莹,魏 宾. 干式空心电抗器的运行分析及故障处理[J]. 高压电器,2004,40(3):239-240. LIU Haiying, WEI Bin. Operation and maintenance of dry air-core reactor[J]. High Voltage Apparatus, 2004, 40(3): 239-240.
[5]  刘志刚,耿英三,王建华,等. 基于流场―温度场耦合计算的新型空心电抗器设计与分析[J]. 电工技术学报,2003,18(6):59-63. LIU Zhigang,GENG Yingsan,WANG Jianhua, et al. Design and analysis of new type air-core reactor based on coupled fluid-thermal field calculation[J]. Transactions of China Electro Technical Society, 2003, 18(6): 59-63.
[6]  吴声治,吴迪顺,鄢 庶. 干式空心电抗器设计和计算方法的探讨[J]. 变压器,1997,34(3):18-22. WU Shengzhi, WU Dishun, YAN Shu. A study of design and calculation method for dry-type reactor with air core[J]. Transformer, 1997,34(3):18-22.
[7]  刘健坤. 自适应有限元法及电抗器温度场的计算[D]. 西安:西安交通大学,1991. LIU Jiankun. Adaptive FEM and calculation of temperature in reactor[D]. Xi’an: Xi’an Jiaotong University, 1991.
[8]  刘志刚,王建华,耿英三,等. 干式空心电抗器磁场和电感的计算分析[J]. 高压电器,2003,39(3):7-9. LIU Zhigang, WANG Jianhua, GENG Yingsan, et al. The calculation of magnetic field and inductance of dry-type air-core reactor[J]. High Voltage Apparatus. 2003, 39(3): 7-9.
[9]  WU A, CHEN D, WANG J, et al. Evaluation of thermal performance for air-insulated busbar trunking system by coupled magneto-fluidthermal fields[C]//Proceeding of International Conference on Power System Technology.[S.l.]:IEEE,2002:2159-2163.
[10]  ZHANG Y, HUANG X, HUANG T, et al. Ventilation structure improvement of aircooled induction motor using multiphysics simulations[J]. Telkomnika, 2012, 10(3):451-458.
[11]  ZHANG Y, RUAN J, HUANG T, 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 Magn.,2012,48(2):1047-1050.
[12]  LAUNDER B E, SPALDING D B. The numerical computation of turbulent flows[J]. Computer Methods in Applied Mechanics And Engineering, 1974(3):269-289.
[13]  PIERCE L W. Thermal considerations in specifying dry-type transformers[J]. IEEE Transactions on Industry Applications, 1994,30(4):1090-1098.
[14]  江少成,戴瑞海,夏晓波,等. 干式空心电抗器匝间绝缘检测原理及试验分析[J]. 高压电器,2011,47(6):67-71. JIANG Shaocheng, DAI Ruihai, XIA Xiaobo, et al. Principle and analysis on inter-turn insulation detection of dry-type air-core reactor[J]. High Voltage Apparatus. 2011,47(6):67-71.
[15]  杜淑文,宋春燕,祝春捷,等. 10 kV空心电抗器周围工频磁场的简化计算及影响范围[J]. 高压电器,2006,42(3):179-182. DU Shuwen, SONG Chunyan, ZHU Chunjie, et al. Simplified calculation and coverage of power frequency magnetic field around 10 kV air-core reactors[J]. High Voltage Apparatus,2006,42(3):179-182.
[16]  郭香福,郝文光,章忠国,等. 特高压干式空心电抗器的耐热性能与温升限值[J]. 变压器,2009,46(4):47-51. GUO Xiangfu, HAO Wenguang, ZHANG Zhongguo, et al.. Thermostability and temperature rise limit of UHV dry-type smoothing reactor with air-core[J]. Transformer, 2009, 46(4):47-51.
[17]  IEEE Std C57.16―1996 IEEE standard requirements, terminology, and test code for dry-type air-core series-connected reactors[S]. 1996.
[18]  刘振亚. 特高压电网[M]. 北京:中国经济出版社,2005. LIU Zhenya. Ultra voltage grid[M]. Beijing: China Economic Press, 2005.
[19]  张建兴,王 轩,雷 晰,等. 可控电抗器综述[J]. 电网技术,2006(30):269-272. ZHANG Jianxing, WANG Xuan, LEI Xi, et al. Overview of controllable reactor[J]. Power System Technology, 2006(30):269-272.
[20]  姚 尧,阮 羚,沈 煜. 超高压可控电抗器抑制潜供电流研究[J]. 高压电器,2009,45(2):22-26. YAO Yao,RUAN Ling,SHEN Yu. EHV controllable reactor for suppressing secondary arc current[J]. High Voltage Apparatus,2009, 45(2): 22-26.

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133