Earth-return admittance

The earth-return impedance has been well discussed, and its effect on the wave-propagation characteristic and the transient waveform is well known, as is clear from a number of publications. The earth-return admittance [8,9,39,40], however, is neglected in most studies on wave propagation and surge characteristics, and its significant effect is not well realized [8,9,40-43]. 

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X, = the conductor outer-media (space/earth return) admittance... 

Assume that the sample cable in Section 3.2.4 is buried as a single-phase cable. Find the impedance and admittance matrices for the single-phase example cable using EMTP. Use the Bergeron model and calculate the impedance and admittance matrices at 1 kHz. From the impedance and admittance matrices found in (1), find the phase constants for the earth-return mode and the coaxial mode using the voltage transformation matrix... 

From the impedance and admittance matrices found in (1), find the phase constants for the earth-return mode and the coaxial mode... 

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