Power quality in smart distribution grids

Demand Side Management requires both an adequate architecture to observe and control the status of the power grid and precise and real time measurements on which rely. In case of frequency fluctuations, precision is no more guaranteed so without adding more hardware the authors exploit FFT interpolation to estimate the real frequency of electrical signals. After the discovery phase follows the measurement phase in which a low cost Smart Meter computes the metrics specified in the following chapters. Finally, a comparison among measures taken by a reference instrument and the proposed meter is reported.