More robust method to specify the 'receiving' node for PTDF/LODF constraint

[manuelma]

At the moment we are assuming that the second node in connection__from_node is the receiving node. This plays well with the way we handle connection_lossless_bidirectional but otherwise doesn't feel great. We need a more robust method.

[DillonJ]

Agreed - we need a way to define the reference direction somehow (and no, bringing back direction doesn't help :-) )

Do you have thoughts?

[manuelma]

Actually I'm not sure we need it anymore. All we need is a consistent convention as we have (or so it seems to me). Why would the user care?

[clizbe]

@manuelma Is this issue still relevant? Otherwise please close it. :)

[manuelma]

@manuelma Is this issue still relevant? Otherwise please close it. :)

Thank you @clizbe for the heads up. Yeah, still relevant I think. Although not too many people uses the PTDF so nobody complains, I think we still should find a better solution.

The current assumption is that the flows goes from the first to the second node in connection__from_node which is kinda obscure.

Cc @DillonJ