Single-wire earth return (SWER) - QuickField simulation example
A single wire distribution network consists of a single insulated wire. Earth is used as a return conductor.
How to find current distribution in single-wire earth return line?
Engineering answer Typical applications Geometry
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Task
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Engineering question
Set up a plane-parallel QuickField AC Magnetics problem for a single-wire earth return line and evaluate current distribution from computed field results.
SWER distribution lines, rural transmission systems, earth-return power lines
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Simulation problem
Problem Type
Plane-parallel problem of AC magnetics.
Power line current I = 10 A
Power frequency f = 50 Hz
Line length L = 10 km.
Electric conductivity of soil = 0.001 S/m
Electric conductivity of rock = 0.0001 S/m.
Current flows through a single-wire power line. Determine the distribution of the reverse current density in the ground.
The distribution of current density in the soil layer and in the rock and the total voltage drops.
Wikipedia: Single-wire earth return
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