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Main >> Applications >> Sample problems

Fiber-optic cable and electric transmission line - QuickField simulation example

Calculation of the low electric stress zone for the most favorable fiber-optic cable position on the transmission line tower.

Engineering question

How to find fiber optic cable tower placement?

Answer
Set up a plane-parallel QuickField AC Conduction problem for a fiber-optic cable near a transmission line and evaluate placement effects from computed field results.

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Typical applications
optical ground wires, transmission tower cables, overhead fiber-optic shield wires

Fiber-optic cable and electric transmission line

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Simulation problem

Problem Type
Plane-parallel problem of AC conduction

Geometry
Optical cable transmission line model Determine the most favorable position of the fiber-optic cable (area of minimal electric potential) from the electric field calculation. C B A Soil 19 m 4 m 4 m 4 m 4.1 m 2.6 m

Given
Line voltage (RMS value) UL = 110 kV.

Task
Determine the most favorable position of the fiber-optic cable (area of minimal electric potential) from the electric field calculation.

Result
Distribution of electric potential:
Distribution of electric potential of three phase transmission line

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