Single-wire earth return (SWER) - QuickField simulation example
Return-current density distribution in the ground for a single-wire earth-return power line, where the earth provides the electrical return path.
How to calculate the reverse current density distribution in the ground for a single-wire earth return line?
Answer Typical applications Geometry
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Task
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Engineering question
A plane-parallel AC magnetics model determines the reverse current density distribution in soil and rock.
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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