The influence of nonhomogeneous earth on the inductive interference caused to telecommunication cables by nearby ac electric traction lines

被引：12

作者：

Satsios, KJ ^{[1
]}

Labridis, DP ^{[1
]}

Dokopoulos, PS ^{[1
]}

机构：

[1] Aristotelian Univ Salonika, Dept Elect & Comp Engn, Power Syst Lab, GR-54006 Salonika, Greece

来源：

IEEE TRANSACTIONS ON POWER DELIVERY | 2000年 / 15卷 / 03期

关键词：

electric traction lines; finite element methods; nonhomogeneous earth; telecommunication cables;

D O I：

10.1109/61.871368

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

This work investigates the inductive interference caused by ac electric traction lines to nearby buried telecommunication cables, in the presence of a nonhomogeneous earth. The two dimensional, quasi stationary electromagnetic field diffusion equation has been numerically solved by using the Finite Element Method (FEM), in a system involving an ac electric traction line of the Greek Railways Organization and a buried cable of the Greek Telecommunications Organization. Using FEM results, magnetic vector potential in the cross-section of the examined system, as well as the longitudinal electromotive force induced in the circuit formed by the telecommunication cable and earth, are calculated. A rigorous parametric analysis concerning various nonhomogeneous earth models has shown a significant influence of the depth and resistivity of the first earth layer, as Kell as of the resistivities of the different earth layers, on the electromagnetic field and on the inductive interference caused to the buried telecommunication cable.

引用

页码：1016 / 1021

页数：6

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