Hello Javier,
As per my understanding, the issue you are facing is that load flow doesn't run properly and the results in all buses are 0.
Since you're getting an error message that there is no swing bus (also known as a slack bus) and all the buses in your load flow results are showing zero, here are a few steps you can take to troubleshoot the problem:
- Check the Swing Bus Configuration:
- Ensure that your 3-phase programmable voltage source is indeed configured as a swing bus in your load flow analysis settings.
- Double-check that the swing bus is properly defined with a specified voltage magnitude and angle (usually, the angle is set to 0 degrees).
- Verify that all buses are correctly connected in your model. A common error is an unconnected bus that can cause the load flow to not run properly.
- Check Component Settings:
- Review the settings of all other components in your model to ensure they are configured correctly for the load flow analysis.
- Make sure that load and generation data are correctly entered.
- Review Load Flow Settings:
- Check the load flow analysis settings for any potential misconfigurations that could be causing the problem.
- Ensure that the load flow method (e.g., Newton-Raphson, Gauss-Seidel) is appropriate for your system.
You may refer the following resource for more information:
I hope it helps!