G. Artale, A. Cataliotti, G. Caravello, V. Cosentino, D. Di Cara, S. Guaiana, N. Panzavecchia, G. Tine

To promote regulation strategies and incentives for harmonic mitigation, simple tools are needed for
evaluating harmonic pollution levels at point of common coupling (PCC), as well as on the whole
grid. Starting from IEEE Std. 1459-2010 approach [1] and the common concept of power factor
correction, in [2] the authors have presented a preliminary study, aimed at investigating the possibility
of using power ratio parameters for harmonic emission assessment. Being the formulation of IEEE
Std. 1459 power quantities and related power ratio indicators very simple, the proposed indicators
measurement can be easily integrated in common measurement instruments, thus allowing easily the
assessment of harmonic emissions and related billing/incentives strategies implementation. In this
context, it is important to investigate the measurement uncertainty impact on the evaluation of
considered power ratios (both those defined in IEEE Std. 1459 and the new proposed ones) [2]. To
this aim, the measurement of the considered parameters has been implemented on a PC-based
sampling wattmeter. Starting from the instrumentation accuracies and the correlation analysis,
combined standard uncertainties of power ratio indicators have been evaluated and a comparison has
been made between IEEE Std. 1459 indicators and the newly proposed ones. This research has been
funded by PO FESR Sicilia 2014-2020, Action 1.1.5, Project n. O8000PA90246, Title “Smart grids
per le isole minori” (I-Sole), CUP: G99J1 8000540007.