The Technical Impact of Increase in Penetration Level of DG Technologies on Power System

Abstract

Increasing penetration level of Distribution Generation (DG) in power system have been attracted attention of researchers in recent times. Utilities are moving towards DG integration into the system, to meet increase in load demand, to reduce system losses and due to concern about environmental effects etc. Integration of DG technologies in power system have technical as well as economical benefits. Technical impact of DG integration depends on the type of DG technology, penetration level and the location at which it is placed in the system. In this paper, the effect of increasing penetration level of different types of DGs on power loss and voltage profile are analysed on IEEE 14-bus test system. The simulation is carried out using MATLAB software. Newton Raphson method have been used for the load flow study and analytical method is used to find out optimal location and sizing of DGs. The simulation results show that there is significant reduction in power losses and improvement in voltage profile with the utilization of DG technologies in the power system. However, as the penetration level increase to the power losses begins to increase showing bathtub curve.