The grid doesn't really pass through each of the points though so you don't really get the frequency mismatch between one side of a node on the grid and another

The grid doesn't really pass through each of the points though so you don't really get the frequency mismatch between one side of a node on the grid and another. Instead of a ring of nodes it's closer to a ring with nodes hanging off of it so you never really get two frequencies observed at one power station because it's only connected to the rest of the grid at a single point.