Numerical Calculation of Current Density Distributions over Cross-Section of OPGW Cable

摘要

In this work, we analyze current density distributions over cross-section of a multi-conductor cable using the software Fenilab. One example of such cables is a composite fiber-optic overhead ground wire (OPGW). This cable consists of four layers: dielectric (silica) in the core modelling optic fibers, aluminum in the intermediate layer, steel in the outer layer and air. A circular multilayer waveguide model is firstly used to represent approximately the cable, then the real geometry of the OPGW cable is simulated with Femlab. We compare our results with analytical data available in the literature and define errors of the numerical calculations.