If the angles change from the value in the data tables after you run runpf(), then it just means that the initial data is not a steady state solution to the AC power flow, and therefore such data is meaningless. There is no "before this shift has happened".

carlos.

Hanie Sedghi wrote:
Dear sir,

I am doing some research and for that I need the value of voltage angles at different buses. when I use runpf() as you know, the angles are kind of shifted as slack bus angle is 0 and the others are shifted to that value.
But I need the values of angles before this shift has happened.
Which part of the code I need to manipulate to get there?

I would truly appreciate your consideration,
Best,
Hanie


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