I have created a small 3-node grid for validation purposes of a program that I am trying to develop. The node1 is a PV node while the node2 is SWING and node3 is PQ. I tried to print the bustype values inside the synchronization functions (presync and sync mainly) where I observed that the bustype value of node1 while it was 1 inside the presync function it turned into 2 inside the sync function. The bustype value of the other two nodes remained unchanged during presync and sync execution.
Is this possible? Why? Can I prevented it?
Thanks in advance
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Sounds like you are probably using the FBS (sweeping) method? This will force the swing node depending on the hierarchy you've described (i.e., 'to' and 'from'), as the solver can only solve top-down and bottom-up. You could re-describe your topology to properly signify 'from' the swing and 'to' the load, or switch to the NR mode, which is more robust to different topologies.
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Hello,
I have created a small 3-node grid for validation purposes of a program that I am trying to develop. The node1 is a PV node while the node2 is SWING and node3 is PQ. I tried to print the bustype values inside the synchronization functions (presync and sync mainly) where I observed that the bustype value of node1 while it was 1 inside the presync function it turned into 2 inside the sync function. The bustype value of the other two nodes remained unchanged during presync and sync execution.
Is this possible? Why? Can I prevented it?
Thanks in advance
Rafik,
Sounds like you are probably using the FBS (sweeping) method? This will force the swing node depending on the hierarchy you've described (i.e., 'to' and 'from'), as the solver can only solve top-down and bottom-up. You could re-describe your topology to properly signify 'from' the swing and 'to' the load, or switch to the NR mode, which is more robust to different topologies.
Thank you very much. Indeed I am using FBS.