I have been asked in my assignment to find the values of the four distributed parameters R, L, G, and C for the following transmission line:

A 790 m length of 50 Hz power transmission line is represented by a symmetrical 'nominal PI' equivalent circuit. The series impedance Z consists of a resistance of 12.3 ohms in series with an inductance of 1.49 mH, and the parallel branches at each end consist of 1.8 nF capacitors.

Now I think there there is something missing in the line description. Shouldn't I be given the conductor material i.e. its conductivity, permeability, etc.?

  • \$\begingroup\$ Maybe assume conductivity is zero? \$\endgroup\$ – Andy aka Apr 11 '15 at 10:53
  • \$\begingroup\$ Hmmm. That doesn't make sense because, based on given equations in textbook, the values of R and G become infinite and zero respectively. \$\endgroup\$ – Bababarghi Apr 11 '15 at 11:02
  • \$\begingroup\$ I don't mean for R. \$\endgroup\$ – Andy aka Apr 11 '15 at 15:32

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