Abstract

This paper presents a new and efficient method for solving the load flow problem of a distribution system. It is mainly based on network topology, basic circuit laws and power summation technique. The main contribution of this paper is: (i) proposing a new and efficient load flow method for radial and weakly meshed distribution systems, (ii) evaluating the impact of load models, different X/R ratios, load growth and tolerance levels, (iii) analysis of impact of number of loops on weakly meshed distribution systems, (iv) comparison of radial and weakly meshed distribution system. The results are obtained for voltage profile, total power losses time of computation, and number of iterations. Computer program coded to implement this power flow solution scheme in MATLAB and successfully applied to several practical distribution networks with radial and weakly meshed structure. Effectiveness of the proposed load flow method has been presented on IEEE 33 bus and IEEE 69 bus radial and meshed distribution networks. The proposed load flow method is compared with existing load flow method Teng J. H. To demonstrate its effectiveness. The test result shows that the proposed method possesses faster convergence characteristics for the distribution networks.

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