高电压技术2012，Vol.38Issue(11)：2836-2842,7.
有限长度埋地多导体电缆对外界电磁场响应特性分析
Response Analysis on Buried Multiconductor Cable with Finite Length to External Electromagnetic Field
摘要
Abstract
In order to research the variation rule of buried multiconductor cable coupling to external electromagnetic field,combining with chain parameter equations of multiconductor transmission line,we deduced calculation formulas of induced signals at cable terminals in frequency domain and time domain by the fast Fourier transform technique and inverse transform technique,and researched the variation rule of terminal currents.Results show that induced current decreases with the increase of buried depth of cable,but increases with the increase of earth conductance and relative permittivity,respectively.The induced current does not change evidently with the increase of conductance of cable conductor,but increases with the increase of cable length.In the range of[0,90°],the induced current decreases with the increase of polarization angle and orientation angle,respectively,but increases with the increase of pitching angle.The characteristic impedance of cable is a demarcation point,when terminal impedance is smaller or bigger,the induced current changes differently.The method and results can be used as references to electromagnetic protection of buried cable.关键词
埋地多导体电缆/传输线理论/Agrawal模型/快速Fourier变换/链参数方程/电磁防护Key words
buried multiconductor cable/transmission line theory/Agrawal model/fast Fourier transform/chain parameter equation/electromagnetic protection分类
信息技术与安全科学引用本文复制引用
王川川,朱长青,周星,谷志锋..有限长度埋地多导体电缆对外界电磁场响应特性分析[J].高电压技术,2012,38(11):2836-2842,7.基金项目
国家自然科学基金 （）
