A three-phase power flow analysis for electrical power distribution system with low voltage profile

This paper proposes a three-phase power flow software tool based on voltage rectangular coordinates and the full Newton-Raphson method. The proposed method is then implemented using Python scripting language and its mathematical library. Comparison with the well-known software OpenDSS developed by EPRI shows promising results. The proposed formulation, in fact, is able to solve ill-conditioned power flow cases. In particular, when tested on a system with very low voltage profile, the proposed method is able to converge without the need to convert the load to voltage-dependent type load as it happens in OpenDSS.