A nondiverging polar-form Newton-based power flow

The design of a mine electric power system requires that power-flow studies be conducted to guarantee that all motor operating and starting loads can be met while acceptable bus voltage levels are maintained. If future loads are overestimated, then the iterative techniques used to solve the system voltage profile will often diverge, leaving no clue for the designer as to the cause of the divergence. A nondiverging power flow formulation based on Newton´s method is presented that is applicable to power flow programs that use the polar form of the bus voltage variables. The method is effective in guaranteeing nondivergence of the power flow solution and in indicating where erroneous system data exist for nonconvergent cases