A fixed-point type method in power flow studies for DC microgrids

Abstract

With the proliferation of distributed energy resources, DC microgrid plays an important role in future power grid. This paper proposed a generic fixed-point type method to solve the nonlinear power flow of DC microgrid, which is widely applicable in DC microgrids regardless sizes, topologies and load conditions. The computation steps of the proposed power flow method are given in detail. To improve the versatility of the proposed method, the convergence conditions are presented under masterslave control and droop control modes respectively. Numerical tests verify the consistence of the result obtained by theoretical analysis.