Abstract
In the last years, in the operation of electric distribution grids (EDGs), the optimization process is reduced to small size grids (namely microgrids) for which the number of variables is much lower, and finding the optimal solution is not a problem. To better supervise and control each microgrid, the emergence of smart metering system (SMS) can be interpreted as a transformation in progress encountered at the level of majority of distribution grid operators (DGOs). In these conditions, distribution grid operators (DOGs) have possibility to obtain online data about the electricity consumption of customers, respectively the electricity amounts product by the renewable sources, which allows them to take some technical measures which enable the microgrids to operate more energy efficient and better plan their investments. A critical assessment of microgrids referring to improving the energy efficiency brings out a series of problems partially unresolved due to the particularities of microgrids where they have been implemented. These problems are studied in this chapter and SMS-based new solutions are proposed for load modelling, phase load balancing and voltage control. All approaches are tested using real microgrids, and the obtained results highlight the performances on the energy efficiency measures.
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