Microgrid power flow using Homotopic and Runge-Kutta Method

This paper present a new robust microgrid power flow based on Sequential Power Flow (SPF) method, which is capable to account for a DG unit. The SPF method can readily accommodate for PV buses as long as the DG models in the sequence-component frame can be formulated. However, the convergence of SPF is heavily dependent on the choice of initial conditions. In this paper the Homotopic and Runge-Kutta order four (RK4) method is used to increase the robustness of SPF method due to initial conditions problem. An IEEE benchmark system is used to test the validity and robustness of the proposed algorithm.