Three phase overhead transmission line capacitance - QuickField simulation example
Three phase overhead transmission line capacitance
How to calculate the self- and mutual-capacitance matrix of a three-phase overhead line?
Answer Typical applications Geometry
Given
Solution
Results
Engineering question
Use a plane-parallel electrostatic model with the capacitance-matrix add-in to calculate all self and mutual partial capacitances.
overhead transmission lines, three-phase conductors, phase-to-earth capacitance systems
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Simulation problem
Problem Type
Plane-parallel problem of electrostatics.
Model length Lz = 1 km. Conductor diameter 1 cm.
Phase voltage 6.3 kV.
Ground electric potential zero volt.
Transmission line of 3 conductors features self- and mutual- partial capacitances. It is convenient to use capacitance matrix calculator add-in to find all the partial capacitances.
Electric field distribution around the transmission line.
Capacitance, nF/km
Phase A
Phase B
Phase C
Phase A
4.27
1.69
1.64
Phase B
1.69
4.10
1.70
Phase C
1.64
1.70
4.28
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