Harmonic load flow analysis of radial distribution system in presence of distributed generation

The optimal DG allocation and sizing which results in the reduction of THD and the system losses using the backward and the forward sweep method is shown in this paper. The optimal location of the DG is obtained from various sensitivity indices. The size of DG is determined by the minimum loss criterion. BIBC and BCBV matrices are calculated to perform load flow analysis and harmonic flow analysis in distributed system. The comparative result for the harmonic flow analysis with and without DG placement is described in this paper. The proposed method is tested on IEEE 33 bus radial system.