基于广义混沌多项式法的多导体传输线辐射敏感度分析方法

doi:10.19595/j.cnki.1000-6753.tces.190920

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摘要针对多导体传输线辐射敏感度响应的不确定性问题,采用广义混沌多项式法（gPC）对其进行分析。在多导体传输线辐射敏感度的模型中,由于实际情况中电磁环境的复杂性,仰角θ、方位角Ψ、偏振角η以及电平幅值E₀作为相关的输入变量具有很强的随机性,采用以无限大地面为参考导体的多导体传输线模型,将以上四个参数作为随机输入变量并使其服从不同的分布类型,基于gPC和多导体传输线理论计算得到传输线辐射敏感度的均值、标准差和概率分布等相关统计特征参数。为了保证传输线系统的电磁兼容性能,为电磁防护措施提供理论指导,该文结合gPC分析方法和基于方差分解的Sobol全局灵敏度分析方法,通过计算得到相关参数,从而能够获得各随机输入变量对系统内传输线辐射敏感度的影响程度,将该计算结果与基于蒙特卡洛法的计算结果进行对比,验证该方法的可行性和高效性。

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	于全毅
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关键词 ：电磁兼容, 多导体传输线, 辐射敏感度, 广义混沌多项式法, 全局灵敏度分析

Abstract：In this paper, generalized polynomial chaos (gPC) method is used to analyze the uncertainty of radiation sensitivity response of multiconductor transmission lines. In the multiconductor transmission lines radiation sensitivity model, due to the complexity of the electromagnetic environment in the actual situation, elevationθ, azimuth Ψ, polarization η and electrical level amplitude E₀ have strong randomness as related input variables. In this paper, a multiconductor transmission lines model with infinite ground as reference conductor is adopted. The above four parameters are taken as random input variables and subjected to different distribution types. Based on the gPC and multiconductor transmission lines theory, the statistical characteristic parameters such as mean, standard deviation and probability distribution of radiation sensitivity of transmission lines are calculated. In order to ensure the EMC performance of transmission lines system and provide theoretical guidance for electromagnetic protection measures, this paper combines gPC method and Sobol global sensitivity analysis method based on variance decomposition to calculate the relevant parameters, so as to obtain the influence degree of each random input variable on the radiation sensitivity of transmission lines in the system. The results of this method are compared with those based on Monte Carlo method (MC) to verify the feasibility and efficiency of this method.

Key words： Electromagnetic compatibility radiation sensitivity multiconductor transmission lines generalized polynomial chaos method global sensitivity analysis

收稿日期: 2019-07-25

PACS:

TM246

基金资助:国家自然科学基金（51707080）和吉林省科技开发计划（20180101032JC, 20190103055JH, 20190303097SF）资助项目

通讯作者: 王天皓男,1988年生,博士,副教授,研究方向为电磁兼容仿真技术。E-mail：wangtianhao@jlu.edu.cn

作者简介: 于全毅,男,1993年生,博士研究生,研究方向为电磁兼容仿真技术。E-mail：yqy17@mails.jlu.edu.cn

引用本文:

于全毅, 刘长英, 吴定超, 王天皓, 迟耀丹. 基于广义混沌多项式法的多导体传输线辐射敏感度分析方法[J]. 电工技术学报, 2020, 35(17): 3591-3600. Yu Quanyi, Liu Changying, Wu Dingchao, Wang Tianhao, Chi Yaodan. Radiation Sensitivity Analysis of Multiconductor Transmission Lines Based on Generalized Polynomial Chaos Method. Transactions of China Electrotechnical Society, 2020, 35(17): 3591-3600.

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