New system harmonic indices for power quality assessment of distribution networks

This paper deals with the harmonic indices and gives considerations about their random behavior; the indices taken into account refer to the entire electrical distribution system. System indices are useful metrics to qualify distribution systems (or a part of it) and are able to take into account different quality service aspects. Indices not yet introduced in the standards and recommendations are proposed; in particular system indices referred to peak factor of the distorted waveforms are proposed due to its ability to represent several detrimental effects on power system components.