Network does not converge due to large amount of CLMDBLU2 in system

The network does not converge after initialization once the simulation is running during the first time step. This is prior to any fault insertion.

This error also occurs with any test system that I use regardless of the size of the system, the error happens when between 25% and 50% of the loads are CLMDBLU2. This does not occur when I use other models such as CLODBL.

Run just 1 time step and check the voltages. Use activity DIFF (File - Compare - Powerflow Cases) to compare the actual bus voltages with the original voltages in the saved case. I guess you have problem at some load buses.

I've used DIFF and there are several buses where there are difference between the actual and original bus voltages. Do you have a suggestion for what to change in model to remedy this?

You are using a very complicated load model at many load buses. How did you get all the parameters? DOCU,CHECK is not a gaurantee of correct or decent parameters. It seems to be a nightmare to use that model. I recommend to switch to another model.

If so it would have been alarmed at DYRE and the exceeding models would be ignored. It can hardly be the reason for network not converging.

I have checked with the POM and I am not exceeding any limits as I am using the 200,000 bus size level.