| 地下管线对通信电缆的屏蔽效应计算方法 |
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| 作者单位： | 深圳市东部建设监理有限责任公司 |
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| 摘 要： | 提出了一种同时考虑感性耦合和阻性耦合时的地下管线对通信电缆的电磁屏蔽模型,以管线节点电流代替管线单元电流进行插值,改进了传统电磁屏蔽效应计算方法。在此基础上,进行了地下管线对地下通信电缆的电磁屏蔽系数计算,探讨了屏蔽保护的规律。计算结果表明,管线粗细和端接阻抗将明显影响屏蔽保护效果。
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| 关 键 词： | 电力线路 电磁屏蔽 地下管线 地下通信电缆 |
Electromagnetic shielding calculation method of underground pipelines to communication cables |
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| Authors: | Zhou Xin Yukun Zhou |
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| Institution: | Zhou Xin Yukun Zhou |
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| Abstract: | An electromagnetic shielding calculation model of underground conductors is presented,which takes the inductive coupling and the resistive coupling into account simultaneously.The traditional electromagnetic shielding calculation method is improved by changing interpolating function with pipeline node currents in place of pipeline element currents.Based on the model,the electromagnetic shielding effectiveness of the buried pipeline to communication cables is calculated and the regularity of electromagnetic shielding effectiveness is discussed.The calculation results show that the dimension of pipeline and grounding resistances will affect shielding effectiveness. |
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| Keywords: | Power transmission line electromagnetic shielding underground pipeline underground communication cable |
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