Abstract

In this paper a new and efficient method for solving the load flow problem of a distribution system is discussed. It is based on network topology, basic circuit laws and power summation technique. The main contribution of this paper is: (i) It proposes a new, efficient load flow method for radial and weakly meshed distribution systems, (ii) It evaluates the impact of load models, different values of X/R ratios, load growth for future expansion and tolerance levels, (iii) It analyses the impact of number of loops on weakly meshed distribution systems, (iv) and also gives comparison of radial and weakly meshed distribution system. The results are obtained for voltage values, total real and reactive power losses, time of computation, and number of iterations required. 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 33bus radial and meshed distribution networks.

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