“…In addition, it is necessary to consider that voltage unbalance factors are influenced by the method that is used for calculating the RMS voltages, sampling windows size of the voltage waveform, and the sliding window method. It should be noted that the aforementioned definitions to quantify voltage unbalance [ 1 , 5 , 6 , 7 , 10 , 17 , 18 , 19 , 22 ] have limitations, so other alternative methodologies need to be defined to quantify voltage unbalance more appropriately [ 25 ]. Furthermore, although the unbalance factor can be obtained from the information available in smart meters [ 26 , 27 ], the development of new smart sensors is crucial to calculate the grid unbalance with greater accuracy.…”