Renewable energy sources such as solar, thermal and wind are high energy sources that meet the growing demand for electrical energy worldwide. Renewable energy sources can be stand-alone power generators or multi-generations systems forming a microgrid system that can also be integrated into the main power grid. The integration of renewable energy sources into the main grid system mostly occurs at distribution levels and depends on the scale and location of the renewable energy sources. Renewable energy sources with large-scale capacity can be integrated into the transmission system, while small-scale energy sources can be integrated directly into medium- and low-voltage distribution systems. Both sources have their characteristics, therefore strict planning and analysis is needed. Architecture of a small-scale photovoltaic (PV) system is designed to generate about 3 kW for local demand, such as an office building, with the implementation of microgrid system equipped with smart meters for energy monitoring, and a control scheme is proposed.
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