Performance Study of Existing Electrical Network Connected by Large Scale Photovoltaic System

Connecting a large scale Photovoltaic solar system to the existing electrical network to supply electricity demand at customer area is a very important issue, because of the advantages of these type of energy resources, but the location and the sizing or the penetration level of these solar power system will affect mainly on the performance of the existing network, therefore, The primary objective of this paper is to investigate the effects of connecting a Photovoltaic solar power plant to Zliten local grid, through simulation of the system in NEPLAN and ETAP software. The paper will determine the best location of the PV system in which the best performance of the network will be achieved, taking into account the voltage level, line loading, network Losses, short circuit level, voltage stability, as well as harmonic analysis. And facilitate the increase of penetration levels of PV systems in the electric network. This can be achieved by quantifying and analyzing the impacts of installing large grid-connected photovoltaic systems on the performance of the electric network accurately.