In this study, technological developments that can be made for the development of the network infrastructure by providing an overview of these dynamic new situations changes in classical and smart networks, stabilizers, relay design, control technologies, power quality analysis and monitoring. It also focuses on topologies and control methods for energy quality regulators in power systems, especially applicable control technologies in distributed power plants according to the new features of power quality. Finally, the trends and expectations of power quality monitoring technology, which are important for reliable and efficient operation in smart grids, are presented.