Impact of Photovoltaic Power Plant on the Transient Stability Compared With Synchronous Generator

Abstract: In the recent years the power system is changing and distributed generation (DG) units are used in power systems at the distribution level regularly. The power demand is increasing and it can be fulfilled by use of renewable energy sources like solar energy. This paper discusses the using of Photovoltaic power plant as a DG in distrusted network and its effect on transient stability. In order to scrutinizing the effect of PV system as a DG in redial distribution system, 3 IEEE standard test systems are simulated with Dig SILENT software. In all 3 networks a short circuit fault is taken and the effect of that is analyzed in 2 modes; first with synchronous generators (SG) and second with Photovoltaic (PV) power plant and the results are compared. Comparing the results shows that in all 3 networks PV power plant work could save the stability in active power and voltage without using any extra devices