  The integration of renewable sources, communication and power networks with
information and communication technologies is one of the main challenges in
Smart Grids (SG) large-scale testing. For this reason, the coupling of
simulators is commonly used to dynamically simulate several aspects of the SG
infrastructure, in the so-called co-simulations. In this paper, we provide a
scoping review of research of co-simulations in the context of Smart Grids: i)
research areas and research problems addressed by co-simulations, ii) specific
co-simulation aspects focus of research, iii) typical coupling of simulators in
co-simulation studies. Based on the results, we discuss research directions of
future SG co-simulation research in each of the identified areas.
