| 局部不均匀大地中电缆阻抗频率特性的快速计算 |
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| 引用本文： | 邹军,袁建生,马信山,付军.局部不均匀大地中电缆阻抗频率特性的快速计算[J].电气应用,2002(12):13-15. |
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| 作者姓名： | 邹军 袁建生 马信山 付军 |
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| 作者单位： | 1. 清华大学电机系,100084
2. 北京全路通信信号研究设计院 |
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| 摘 要： | 为了快速、准确地计算局部不均匀大地中电缆阻抗的频率特性 ,提出了一种虚拟媒质方法和柯西估计方法 (Cauchy’smethod)相结合的快速计算方法。该方法采用虚拟媒质方法求解局部不均匀大地中矢量磁位积分方程 ,得到几个不同频率下电缆阻抗值及其频率导数值 ,然后利用柯西估计法确定电缆阻抗参数关于频率的有理函数 ,即电缆阻抗参数的频率特性
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| 关 键 词： | 不均匀大地 虚拟媒质 柯西估计 阻抗频率特性 |
| 修稿时间： | 2002年9月30日 |
Fast Evaluation of the Frequency Character of Cable Impedance in the Locally Non-uniform Earth |
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| Zou Jun.Fast Evaluation of the Frequency Character of Cable Impedance in the Locally Non-uniform Earth[J].Electrotechnical Application,2002(12):13-15. |
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| Authors: | Zou Jun |
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| Affiliation: | Tsinghua Universsity |
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| Abstract: | In order to evaluate the frequency character of cable impedance in the locally non-uniform earth,an algorithm which combines the fictitious method and Cauchy's method is presented The cable impedance and its frequency-derivatives at a few frequency points are calculated by solving the magnetic vector potential integral equation using the fictitious medium method,and then the cable frequency character is approximated by a rational function by means of Cauchy's method |
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| Keywords: | non-uniform earth fictitious medium Cauchy's method frequency character of impedance |
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