Over the past few years, solar energy conversion technology is sharply developing. An important first step is to make this conversion system more effective and more reliable. The main objective of this paper is to study the influence of the power of the electricity network on the connection of the solar energy source. The photovoltaic source has been examined under the effect of the variation of the parameters of the networks such as the power of short-circuit and the frequency .The results obtained by the simulation have shown that the photovoltaic source has amazing performance if the power system is of high or medium power and with constant parameters.