Dear MATPOWER community.
Greetings and happy holidays to everyone, i have some doubts about the representation of the transformers, for those branches with transformers i put the transformation relationship betwen the voltages in the "from bus" and the "to bus" in the column TAP (number 9 column) of the branches matrix. In my case i have transformers of (230/115)kV, so the value i'm writting in the column TAP is 2, but, according to what i read this is valid only when r=x=0... Wich is not my case, because i have r=0 and x=0.075... So how can i calculate the value that should go in TAP to represent the transformer correctly? Should i put the performance value? Thank's from advance.
