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...

特高压直流耐压实验用防风抗晕导线的设计

, PP. 247-254

Keywords: 特高压,计算流体力学,风偏角,干扰效应,模拟电荷法,表面场强

Full-Text   Cite this paper   Add to My Lib

Abstract:

为了应对西北风力强劲的特殊气候条件,本文设计了一种特高压直流耐压实验用的新型防风抗晕24分裂导线。基于计算流体力学与模拟电荷法,通过求解空气-多分裂导线流场的二维RANS控制方程和相应的电位系数矩阵,分析计算了不同分裂数、子导线直径、间隔盘半径与导线间距比的防风抗晕导线在风速场中的气动力特性及三维电场,导线设计以抑制电晕和减小风偏角为主要目标,综合考虑导线的电场-流场特性,确定了实验导线的子导线直径、分裂数、间隔盘半径等优化设计参数。计算表明,对于多分裂实验导线,存在子导线间干扰效应最大的临界导线间距比,分裂子导线间的干扰效应能显著影响导线风偏角;在13.8m/s的水平风速下,实验导线风偏角被抑制在25°以内,导线表面最大场强被抑制在27kV/cm以内,防风抗晕导线在大风条件下具备较好的电气性能与力学性能,能够确保耐压实验的安全进行。

References

[1]  陈忠,蔡泽祥. ±800kV直流设备现场直流耐压实验[J]. 高电压技术,2009(10): 2356-2360. Chen Zhong,Cai Zexiang. On site DC voltage with- stand test of 800kV DC equipment[J]. High Voltage Engineering,2009,35(10): 2356-2360.
[2]  Zhang Wenliang,Lu Jiayu,Ju Yong,et al. Design consideration of conductor bundles of ±800kV DC transmission lines[J]. Proceedings of CSEE,2007,27(27): 1-6.
[3]  Li H,Chen W L,Xu F,et al. A numerical and experimental hybrid approach for the investigation of aerodynamic forces on stay cables suffering from rain-wind induced vibration[J]. Journal of Fluids and Structures,2010,26(7): 1195-1215.
[4]  刘学忠,高超,邓显波,等. 高速气流对绝缘子表面放电特征的影响[J]. 电工技术学报,2010,25(12): 16-21.
[5]  Liu Xuezhong,Gao Chao,Deng Xianbo,et al. Influence of high-speed airflow on surface discharge characteristics of insulator[J]. Transactions of China Electrotechnical Society,2010,25(12): 16-21.
[6]  吕翼,楼文娟,孙珍茂,等. 覆冰三分裂导线气动力特性的数值模拟[J]. 浙江大学学报(工学版),2010,44(1): 174-179.
[7]  Wang Shaohua,Jiang Xingliang,Sun Caixin. Charac- teristics of icing conductor galloping and induced dynamic tensile force of the conductor[J]. Transactions of China Electrotechnical Society,2010,25(1): 159- 166.
[8]  曹化锦,李黎,陈元坤,等. 架空输电线的找形及舞动分析[J]. 华中科技大学学报: 自然科学版,2011,39(1): 102-105.
[9]  李寿英,顾明. 斜直圆柱绕流的CFD模拟[J]. 空气动力学学报,2005,23(2): 222-227.
[10]  Li Shouying,Gu Ming. CFD simulation of flow past inclined/vertical cylinders[J]. Acta Aerodynamica Sinica,2005,23(2): 222-227.
[11]  谢强,谢超,管政. 特高压8分裂导线风荷载干扰效应风洞实验[J]. 高电压技术,2011,37(9): 2126- 2132.
[12]  Xie Qiang,Xie Chao,Guan Zheng. Wind tunnel test on the interference effect on wind load of UHV 8-bundled conductors[J]. High Voltage Engineering,2011,37(9): 2126-2132.
[13]  谢强,孙启刚,管政. 多分裂导线整体阻力系数风洞实验研究[J]. 电网技术,2013,37(4): 1106-1112.
[14]  Xie Qiang,Sun Qigang,Guan Zheng. Wind tunnel test on global drag coefficients of multi-bundled conductors [J]. Power System Technology,2013,37(4): 1106-1112.
[15]  中华人民共和国电力行业标准. DL/T 436—2005高压直流架空送电线路技术导则[S]. 北京: 中国电力出版社,2005.
[16]  So R,Liu Y,Chan S,et al. Numerical studies of a freely vibrating cylinder in a cross-flow[J]. Journal of Fluids and Structures,2001,15(6): 845-866.
[17]  邵天晓. 架空送电线路的电线力学计算[M]. 北京: 中国电力出版社,1987.
[18]  彭迎,阮江军. 模拟电荷法计算特高压架空线路3维工频电场[J]. 高电压技术,2006,32(12): 69-73. Peng Ying,Ruan Jiangjun. Calculation of three- dimensional harmonic electric field around ultra high voltage overhead line based on the charge simulation method[J]. High Voltage Engineering,2006,32(12): 69-73.
[19]  孙才华,宗伟,李世琼,等. 一种较准确的分裂导线表面场强计算方法[J]. 电网技术,2006,30(4): 92-96.
[20]  Sun Caihua,Zong Wei,Li Shiqiong,et al. A more accurate calculation method of surface electric field intensity of bundled conductors[J]. Power System Technology,2006,30(4): 92-96.
[21]  IEC 60826. Desig criteria of overhead transmissionn lines [S]. Switzerland: HIS,2003.
[22]  Lam K,Fang X. The effect of interference of four equispaced cylinders in cross flow on pressure and force coefficients[J]. Journal of Fluids and Structures,1995,9(2): 195-214.
[23]  Lam K,Gong W,So R. Numerical simulation of cross-flow around four cylinders in an in-line square configuration[J]. Journal of Fluids and Structures,2008,24(1): 34-57.
[24]  Lam K,Li J Y,So R M C. Force coefficients and Strouhal numbers of four cylinders in cross flow[J]. Journal of Fluids and Structures,2003,18(3-4): 305- 324.
[25]  Norberg C. Flow around a circular cylinder: aspects of fluctuating lift[J]. Journal of Fluids and Structures,2001,15(3): 459-469.
[26]  张文亮,陆家榆,鞠勇,等. ±800kV直流输电线路的导线选型研究[J]. 中国电机工程学报,2007,27(27): 1-6.
[27]  Lü Yi,Lou Wenjuan,Sun Zhenmao,et al. Numerical simulation of aerodynamic characteristics of three bundled iced transmission lines[J]. Journal of Zhejiang University(Engineering Science),2010,44(1): 174- 179.
[28]  王少华,蒋兴良,孙才新. 覆冰导线舞动特性及其引起的导线动态张力[J]. 电工技术学报,2010,25(1): 159-166.
[29]  Cao Huajin,Li Li,Chen Yuankun,et al. Form finding and galloping analysis of overhead transmission conductors[J]. Journal of Huazhong University of Science and Technology,2011,39(1): 102-105.
[30]  张志劲,黄海舟,蒋兴良,等. 基于流体力学的不同型式绝缘子覆冰增长过程分析[J]. 电工技术学报,2012,27(10): 35-43. Zhang Zhijin,Huang Haizhou,Jiang Xingliang,et al. Analysis of ice growth on different type insulators based on fluid dynamics[J]Transactions of China Electrotechnical Society,2012,27(10): 35-43.
[31]  陈元坤,李黎,曹化锦. 分裂导线微风振动数值仿真[J]. 振动与冲击,2013,32(7): 179-183.
[32]  Chen Yuankun,Li Li,Cao Huajin. Numerical simula- tion of Aeolian vibration of bundle conductors[J]. Journal of Vibration and Shock,2013,32(7): 179-183.
[33]  张兆顺,崔桂香,许春晓. 湍流理论与模拟[M]. 北京: 清华大学出版社,2005.

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133