Looking for a reasonable power grid model up to 500kHz

[gustavrsh]

Hi! I'm working on Power Line Communications simulations and I'm having trouble modelling the low voltage power grid. I've found reference impedances for 50Hz, but I need a decent circuit model for frequencies up to 500kHz. I know impedance varies in time and frequency, but I need a ballpark model that could be used for comparing different power supply topologies with the presence of a signal from 0 to 500kHz.

I know it's not a trivial question, but maybe the EMC nerds could help me. Any literature related to this is appreciated.

Note: I'm not looking for s-params, characteristic impedance, etc; I'm looking for a actual model with an ideal voltage supply and resistances, capacitances and inductances. I'm using PSIM.

[wasedadoc]

There are several situations including:

1.  Substation to premises.

2.  Within small residential premises.

3.  Within large residential premises.

4.  Within commercial premises using office type equipment.

5.  Within commercial premises using machinery.

6.  Topology.  Ring or star?

Etc, etc.