Hi,
Why can't you route your CT clamps?
If you simulate the CT outputs, how will your system controller know what is going on?
Can you please tell us your electronics, programming, Arduino, hardware experience?
I think you need to realize your system with batteries and grid tied unit and charging system is a complex balance of power, and an accurate measurement of REAL current is a critical part of that.
This where you need professionals to do your installation, not just for safety, but approval by your utility and insurance company.
Tom... 