Three-phase power flow calculations using the current injectionmethod

摘要

This paper presents a new sparse formulation for the solution ofnunbalanced three-phase power systems using the Newton-Raphson method.nThe three-phase current injection equations are written in rectangularncoordinates resulting in an order 6n system of equations. The Jacobiannmatrix is composed of 6×6 block matrices and retains the samenstructure as the nodal admittance matrix. Practical distribution systemsnwere used to test the method and to compare its robustness with that ofnthe backward/forward sweep method