Analysis of the Impact of PV Penetration in Distribution Network: A Case Study in IEEE 14 Bus System

Due to the increasing electricity demand, distributed generation (DG) had been integrated into the power system. Due to the incorporation of DG with the utility grid, the stability of the system subjected to any disturbances is affected severely, including the degradation of power quality. Among other DG, integration of large-scale PV to the grid causes more stability problems due to the lowering of the overall inertia of the system. Hence, an investigation is needed for any PV-connected system to address different stability issues when subjected to any fault. This paper presents a rigorous study on the IEEE 14 bus test system to show the impact of PV integration on system parameters like voltage profile, fault current, rotor angle, frequency and THD value. For a better understanding of the variations of these parameters, short circuit study, transient analysis and harmonic analysis have been carried out on the test system. At the end of this paper, some recommendations have been proposed for a PV integrated system. For modeling and simulation purposes, ETAP software has been used.