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Transmission line capacitance

3 phase transmission line above earth.

Problem Type:
Plane problem of electrostatics.

Geometry:

transmission_line_capacitance

transmission_line_capacitance
d = 1 m, h = 5 m.
Model depth l = 4 km.

Given:
Relative permittivity of air ε = 1,

Solution:
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.

Results:
Electric field distribution around the transmission line.

transmission line capacitance matrixtransmission line capacitance matrix

C, nF

Phase A

Phase B

Phase C

Phase A

13

3

2.9

Phase B

3

12.6

2.9

Phase C

2.9

2.9

12.9

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