  Environmental, economical and technical benefits of photovoltaic (PV) systems
make them to be used in many countries. The main characteristic of PV systems
is the fluctuations of their output power. Hence, high penetration of PV
systems into electric network could be detrimental to overall system
performance. Furthermore, the fluctuations in the output power of PV systems
make it difficult to predict their output, and to consider them in generation
planning of the units. The main objective of this paper is to propose a hybrid
method which can be used to control and reduce the power fluctuations generated
from large grid- connected PV systems. The proposed method focuses on using a
suitable storage battery along with curtailment of the generated power by
operating the PV system below the maximum power point (MPP) and deployment of a
diesel generator. These methods are analyzed to investigate the impacts of
implementing them on the economical benefits that the PV system owner could
gain. To maximize the revenues, an optimization problem is solved.
