Thesis (M.Sc.) - Cairo University - Faculty of Engineering - Department of Electrical Power and Machines

The distributed generation (DG) is more increased on power grids around the world. The voltage instability occurs when increased load which propulsion power system to stability boundaries and lead to voltage collapse and power blackouts. Therefore, there is a need to study voltage stability of the system. Also, study how to prevent power system near to stability boundaries. In this thesis, the effect of penetration of distributed generation of a radial system on voltage stability, voltage profile, and power flow will be studied. Power flow is studied by calculating voltage profile of each bus and power losses of the distribution system. Voltage stability analysis is studied by calculating fast voltage stability index, line stability index, line stability factor, maximum load ability and plotting the P-V curves. This thesis is offering a study of the effect of load models on the calculation of voltage stability, voltage profile, and power flow. The optimal location and size of distributed generation to achieve minimum power losses and enhanced voltage stability are studied in this thesis by using genetic algorithm

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