An augmented Newton-Raphson power flow formulation based on current injections

This paper presents a new procedure for the solution of power flow problem, by using the current injection equations written in rectangular coordinates. From this formulation, it is possible to obtain the same convergence characteristics of the conventional power flow expressed in terms of power mismatches and written in polar coordinates. By using this methodology, a highly sparse augmented formulation suited to the incorporation of FACTS devices and control of any kind is also obtained. The results presented validate the proposed method.