Three-phase power-flow by direct Z BR method for unbalanced radial distribution systems

摘要: This paper introduces a novel three-phase power flow approach for unbalanced radial distribution systems. The proposed is developed based on the branch frame of reference, rather than traditional bus reference. On basis simple direct iterative method can be applied. Hence, may called ‘direct ZBR method’. Basic graph theory and injection current technique are also applied in approach. clear theoretical foundation topology network make efficient reliable. To demonstrate better convergence performance efficiency approach, four IEEE test feeders used comparisons. results show that has robust characteristics high performance, especially large-scale