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I need to add lossy power line in LTSpice model to be able to simulate the signal transmission over this line.
This means that I will need two components:
230 VAC power source model
asset power line model
Like that:
I did find ideal lossless transmission line model:
But this is not that I need. Is there any off the shelf solution?
If not: how do I build it my self?
If you're simulating a transmission distance less than 1/10 of a wavelength (so less than 60 km for a 50 Hz signal), you should get reasonable results replacing the LTRA element with a single pi or T section. For example, for a pi section you could use this in place of your 1000 m line:
simulate this circuit – Schematic created using CircuitLab
Note: Values based on your other question
If you want to increase the accuracy (or the length), you can simply use mulitple cascaded sections, making sure the total R, L, and C values add up to the right number and that they're evenly distributed along the line. It's also a good idea to try the simulation with, say, 1 and 2 sections and see that the result doesn't change very much, to verify that this approximation is good enough.
