Very sorry，I am establishing a three-node energy system, and I want to express the one-way electricity transmission between the nodes. I want Anhui to act as the electricity transmission center and transmit electricity to the other two nodes. However, in the final output results, Anhui becomes the electricity importing node, while the Shanghai node becomes the electricity exporting node. Where did I go wrong in expressing this?
_Originally posted by @meng25meng in https://github.com/iiasa/message_ix/issues/798#issuecomment-1994617842_