Modelling, simulation and experimental verification of a smart grid system

With the contribution of rapid developments in information and communication technologies in the past 15 years, it has become possible to remotely monitor, manage, optimize and process big data, minimize the human factor on the system with various computational methods, and more. In this context, the traditional electricity grid is restructured and transformed into a new grid model, which is expressed as a smart grid where it is intensely applied, without neglecting the security aspect of information and communication technologies. With this new system, it is possible to remotely monitor, intervene and repair the electricity grid, perform demand-side management, provide bidirectional data and power flow, store energy, connect electric vehicles to the network, and use renewable energy sources and micro grids effectively. In this thesis, modeling, simulation and experimental verification of the Smart Grid didactic system belonging to De Lorenzo company at Manisa Celal Bayar University Faculty of Engineering Electrical-Electronics Engineering Department Smart Grids Laboratory, which was established in 2018, was carried out. There are units representing hydroelectric, wind, thermal and solar power plants in the experiment set. The hydroelectric power plant is represented with a synchronous generator which has a nominal power of 0.8 kVA, the wind power plant is represented with a squirrel cage asynchronous generator with a power of 1.5 kW, the thermal power plant is represented with a 3-phase power supply unit, and the solar power plant is represented with a photovoltaic panel which has 90 Wp power. The system also has 7-stage ohmic, capacitive and inductive loads for each phase. Informations belong to smart grid units can be observed on the SCADA screen, the system can be intervened both on this screen and manually. In this study, all components of a laboratory scale smart grid system are modeled in MATLAB / Simulink environment, these models are verified by experiments and the system is simulated in virtual environment. In addition, an interface is designed in the MATLAB environment. System data are displayed in this interface according to changes in generators and loads. Thus, the real model of a multi-component system has been introduced for use in education and research in the field of smart grids at both undergraduate and postgraduate levels.