Substation busbars eddies. Bar vs. C-channel - QuickField simulation example
Effect of power frequency and skin effect on current carrying rods, pipes and channel.
How to find AC losses in C-channel busbar conductors?
Answer Typical applications Geometry
Given
Task
Results
Current density distribution in a Bar at 0 Hz and 60 Hz:
Current density distribution in a C-channel at 0 Hz and 60 Hz:
Engineering question
Set up a plane-parallel QuickField AC Magnetics problem for C-channel busbar conductors and evaluate AC losses from computed field results.
substation busbars, channel-section busbars, structural busbar supports
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Simulation problem
Problem Type
Plane-parallel problem of AC Magnetics.
Material of busbar - aluminum with electrical conductivity σ = 30.1 MS/m
Frequency f = 0 Hz, 60 Hz.
Calculate busbar DC resistance and impedance at 60 Hz.
Busbar
Cross-section area, in²
Resistance, μOhm/m
Impedance, μOhm/m
Bar 6" ⨯ 0.5"
3
17.2
182
C-channel 6" w ⨯ 2.5" d
2.4
21.3
156
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