A simple Matlab/Simulink model of balanced radial distribution systems and its application to find optimal penetration of active, reactive and complex power to minimize power losses

This paper presents and validates the balanced radial distribution network (RDN) Matlab/Simulink model. The validation of Simulink model is carried out by comparing node voltages, total active and reactive power loss of balanced RDN with an existing vector distribution load flow (VDLF) method. The Simulink model is very helpful for proper sizing of distributed generation (DG) in RDN in considering DG as negative load. The proposed model is tested for 12, 15, 33 and 69-bus test balanced RDN. The variation in total active power loss (TPL) and total reactive power loss (TQL) for different penetration level of different types of DG are presented. At a given location, an optimal penetration level of DG to minimize total power loss is found by applying the proposed Simulink model for the 12-bus system.