Load Flow Analysis employing Solid State Transformer

This is a simple 3 bus network where Solid state transformer is connected between bus 1 and bus 3. The model of SST is working perfectly but whenever I run the load flow, bus 2 (loads connected at SST) is being ignored by prompting a message 'The following subnetworks have been ignored because they contain no swing bus'. I don't know whether it is due to detail model of SST employing multiple power electronic device in between or due to High Frequency transformer in between, does anybody have idea regarding this ? Thanks !

[Feng]

Where can we download the model to have futher analysis? Thanks!

Answer 1

[Sabin]

I believe the main issue here is level of fidelity of the SST. It looks like detailed power electronics and transformer are employed but that’s a bit in contradiction with the definition of load flow analysis. I suggest implementing the SST in a more abstract way.