雷击桁架桥梁时雷电保护系统中瞬态电流分布的计算方法

摘要
图/表
参考文献
相关文章 (7)

全文: PDF (0 KB)
输出: BibTeX | EndNote (RIS)

摘要针对由雷击引起的电磁干扰问题，提出了一种用于快速计算桁架桥梁各分支导体中雷电流分布的方法。该方法首先对桁架桥雷电防护系统上的每根导体用传输线进行等效，忽略导体之间的耦合作用后，整个桁架桥防雷系统等效为由传输线组成的无耦合电网络，然后在频域进行求解，并通过快速傅里叶逆变（IFFT）技术得到雷电防护系统中电流分布的时域解。为了验证算法的有效性，采用文中方法与其他文献中的方法分别对同一问题进行了仿真计算，结果表明：本方法在解的精度上与其他方法相近，但在求解速度、运算量两方面明显优于其他方法。本方法为快速获取桁架桥梁内部雷电电磁场分布奠定了基础，是分析、评估桁架桥内部雷电防护等级（LPL）的一种行之有效的方法。

	服务

	把本文推荐给朋友
	加入我的书架
	加入引用管理器
	E-mail Alert
	RSS
	作者相关文章
	张岩
	刘福贵
	汪友华
	刘荣美

关键词 ：桁架桥, 防雷系统, 传输线模型, 快速傅里叶正-逆变换, 暂态电流

Abstract：EMI problems caused by lightning struck truss bridge are concerned extensively. A fast method for calculating the transient current distributions of LPS(lightning protection system) of truss bridge is designed. First,the transmission line model is established to model the each branch conductor of LPS,with ingnoring the electromagnetic coupling between conductors,and the LPS of truss bridge is modeled as transmission line network without electromagnetic coupling. Then,the model is calculated in frequency domain,and the transient response of a LPS is obtained by using IFFT. In order to verify accuracy and efficiency of the presented method,the results obtained by presented method and methods in other literatures are compared,the difference in results is small,and time consuming is short. The method in this paper lays the foundation for transient lightning electromagnetic fields calculation and it is effective to evaluate the LPL of truss bridge.

Key words： Truss bridge lightning protection system transmission line model FFT-IFFT transient current

收稿日期: 2014-05-14 出版日期: 2015-01-22

PACS:

TM726

基金资助:国家重点基础研究发展计划（973计划）前期研究专项（2012CB723306）资助项目。

作者简介: 张岩男，1983年生，博士研究生，主要从事电磁场数值计算，电磁兼容技术等方面的研究。刘福贵男，1972年生，教授，博士生导师，主要从事电磁场数值计算与磁技术及应用等方面的研究。

引用本文:

张岩，刘福贵，汪友华，刘荣美. 雷击桁架桥梁时雷电保护系统中瞬态电流分布的计算方法[J]. 电工技术学报, 2014, 29(11): 255-260. Zhang Yan,Liu Fugui,Wang Youhua,Liu Rongmei. Calculating Transient Current Distribution of Lightning Protection System of a Truss Bridge. Transactions of China Electrotechnical Society, 2014, 29(11): 255-260.

链接本文:

http://dgjsxb.ces-transaction.com/CN/Y2014/V29/I11/255

[1] 秦玉新,周开春,廖严峰. 浅谈长跨度桥梁的雷电防护[J]. 气象研究与应用,2010,31(3): 80-83. Qin Yuxin,Zhou Kaichun,Liao Yanfeng. Lightning protection of long span bridges[J]. Journal of Meteoro- logical Research and Application,2010,31(3): 80-83.
[2] 尹巧珍. 桥梁防雷装置设置的技术探讨[J]. 福建建筑,2008(6): 97-100. Yin Qiaozhen. Technology discussion of lightning protection system of bridge[J]. Fujian Architecture & Construction,2008(6): 97-100.
[3] Karwowski A,Zeddam A. Transient currents on lightning protection systems due to the indirect lightning effect[J]. IEE Proceedings-Science,Measurement and Technology,1995,142(3): 213-222.
[4] Ala G,Silvestre M L D. A simulation model for electromagnetic transients in lightning protection systems[J]. IEEE Transations on Electromagnetic Compatibility,2002,44(4): 539-554.
[5] 陈水明,张小青,吴维韩. 雷击建筑物时电流分布的计算和试验研究[J]. 清华大学学报(自然科学版),1999,39(5): 28-30. Chen Shuiming,Zhang Xiaoqing,Wu Weihan. Electro- magnetic field distribution during building struck by lightning[J]. Journal of Tsinghua University(Science and Technology),1999,39(5): 28-30.
[6] Zhou Q B,Du Y. Using EMTP for evaluation of surge current distribution in metallic gridlike structures[J]. IEEETransactions on Industry Applications,2005,41(4): 1113-1117.
[7] 杨琳,吴广宁,田晓菲. 基于EMTP的水平接地体冲击时-频特性分析[J]. 电工技术学报,2011,26(6): 194-198. Yang Lin,Wu Guangning,Tian Xiaofei. Analysis of impulse characteristic grounding electrode in frequency and time domain based on EMTP[J]. Transations of China Electrotechnical Society,2011,26(6): 194-198.
[8] 刘教民,杜巍,王震洲,等. 基于时域有限元的特快速暂态过电压仿真新方法[J]. 电工技术学报,2013,28(11): 286-292. Liu Jiaomin,Du Wei,Wang Zhenzhou,et al. A new simulation calculation method for VFTO based on time domain finite element method[J]. Transations of China Electrotechnical Society,2013,28(11): 286-292.
[9] 张小青. 高层建筑钢筋结构体雷电暂态计算模型[J]. 中国电机工程学报,1996,16(5): 306-311. Zhang Xiaoqing. Calculation of lightning transients in the steel constructions of high buildings[J]. Procee- dings of the CSEE,1996,16(5): 306-311.
[10] 王晓辉,张小青. 考虑参数频变特性的风机塔体雷电暂态计算[J]. 高电压技术,2009,35(6): 1344-1349. Wang Xiaohui,Zhang Xiaoqing,Lightning transients of wind turbine towers involving frequency dependent characteristics[J]. High Voltage Engineering,2009,35(6): 1344-1349.
[11] 林福昌,姚宗干,蒋政龙. 雷击建筑物时电流分布的计算. 高电压技术,1998,24(1): 56-58. Lin Fuchang,Yao Zonggan,Jiang Zhenglong. Calcula- tion of current distribution in a building under direct lightning stroke[J]. High Voltage Engineering,1998,24(1): 56-58.
[12] Zou J,Lee J B,Ji Y F,et al. Transient simulation model for a lightning protection system using the approach of coupled transmission line network[J]. IEEE Transations on Electromagnetic Compatibility,2007,49(3): 614-621.
[13] 齐磊,原辉,李琳,等. 架空电力线路故障状况下对埋地金属管道感性耦合的传输线计算模型[J]. 电工技术学报,2013,28(6): 254-270. Qi Lei,Yuan Hui,Li Lin,et al. Transmission line modelling of inductive coupling of overhead power lines subjected to grounding fault to underground metal pipeline[J]. Transations of China Electrotechnical Society,2013,28(6): 254-270.
[14] 汲亚飞,杨宇,邹军. 建筑物防雷系统R-L-C参数闭式解析算法[J]. 高电压技术,2009,35(6): 1382- 1387. Ji Yafei,Yang Yu,Zou Jun. Fast algorithm for evalua- ting R-L-C parameters of lightning protection systems of a building using the closed-form expression[J]. High Voltage Engineering,2009,35(6): 1382-1387.
[15] 唐章宏,袁建生. 复空间中两直线导体间互阻系数的计算[J]. 电气应用,2000(4): 4-6. Tang Zhanghong,Yuan Jiansheng. Calculation of the mutual impedance of two conducting line segments in complex space[J]. Electrotechnical Application,2000(4): 4-6.
[16] 刘成华,张小青,薛洁,等. 防雷系统中含倾斜导体的电气参数的计算方法[J]. 电瓷避雷器,2012(2): 81-85. Liu Chenghua,Zhao Xiaoqing,Xue Jie,et al. A calculation method of the electrical parameters of sloping conductors in lightning protection systems[J]. Insulators and Surge Arresters,2012(2): 81-85.