Measurement Uncertainty of Harmonic Emission Indicators based on IEEE Std. 1459-2010

The study presented in this paper is aimed at analyzing the measurement uncertainty impact on the evaluation of some power ratio parameters for harmonic emissions assessment based on IEEE Std. 1459-2010 apparent power decomposition. In addition to power factors for line utilization and harmonic pollution levels evaluation defined in the Standard, the study covers also some new parameters, which have been introduced by the authors as IEEE Std. 1459-2010 power quantities ratios. The measurement of the aforesaid parameters is implemented on a PC-based wattmeter, in order to investigate the measurement uncertainty impact on the evaluation of the power ratios. The obtained results show that, in comparison with IEEE Std. 1459-2010 indicator for harmonic pollution level, better results can be reached with the new power ratios, whose behavior is more similar to the traditional power factors.