| 一种求解屏蔽电缆场线耦合问题的混合方法 |
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| 引用本文： | 张刚,王立欣,刘超.一种求解屏蔽电缆场线耦合问题的混合方法[J].电工技术学报,2010(5). |
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| 作者姓名： | 张刚 王立欣 刘超 |
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| 作者单位： | 哈尔滨工业大学电气工程及自动化学院; |
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| 摘 要： | 为了克服求解屏蔽电缆电磁耦合问题传统方法的缺点,研究了一种将电磁场时域有限差分方法(FDTD)和传输线理论相结合的混合求解方法。将屏蔽电缆的场线耦合模型分解为内系统和外系统,分别应用场的方法和等效路的方法进行求解。在外系统的求解中,考虑了有耗土壤和屏蔽层接地方式对屏蔽层响应的影响。内系统求解中对传输线方程应用FDTD方法得到了芯线响应的时域解。利用该混合方法研究了外部电磁脉冲干扰对近地铺设屏蔽同轴电缆芯线的影响,并与相关实测结果进行了对比分析,验证了计算结果的正确性。
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| 关 键 词： | 屏蔽电缆 时域有限差分方法 传输线理论 混合方法 |
A Hybrid Method for Solving Field-Line Coupling Problem of Shielded Cables |
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| Zhang Gang Wang Lixin Liu Chao.A Hybrid Method for Solving Field-Line Coupling Problem of Shielded Cables[J].Transactions of China Electrotechnical Society,2010(5). |
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| Authors: | Zhang Gang Wang Lixin Liu Chao |
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| Affiliation: | (Harbin Institute of Technology Harbin 150001 China)Zhang Gang Wang Lixin Liu Chao |
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| Abstract: | In order to improve the traditional methods for solving field-line coupling problem of shielded cables,a hybrid method is studied,which combines the FDTD method for electromagnetic field and the transmission line theory.The coupling module is divided into two systems:inner system and outer system,respectively solved by field method and circuit method.The lossy soil and grounding methods of the shield are considered when solving the outer system.For the inner system,the FDTD method is used to obtain the time... |
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| Keywords: | Shielded cable FDTD method transmission line theory hybrid method |
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