Load Flow Solution of Radial Distribution Systems Using Two Port Parameters

Abstract

A load flow is an essential tool for the steady state analysis of a power system. Load flow involves calculation of bus voltages, line currents, line flows and losses given full network parameters, complex loads and one bus voltage as reference at steady state condition. Distribution load flow is a very important tool for the analysis of distribution systems and is used in operational as well as it’s planning. Generally, for distribution system load flow solution, Forward- backward sweep algorithm is used in which voltages are updated in forward sweep and currents in backward sweep. The aim of the present work is to develop the various distribution system network elements models in terms of two port parameter. With these network elements modeling, a load flow algorithm based on Forward- backward sweep technique has been developed .This algorithm is tested on standard IEEE 123 node distribution system with the help of Enerlyser software. The results from Enerlyser software and IEEE results are compared. This proposed algorithm converges fast as there in no matrix factorization and inversion.