Meaningful Resolution of the IEEE Std. 1459 Unbalanced Power

This letter present a new resolution of the IEEE Std. 1459 unbalanced power
$(S_{U1})$
. The resolution is intended to achieve a better quantification of the power terms included in
$S_{U1}$
. The new definitions improve the quantification of the unbalance phenomena presented in the IEEE Std. 1459. The new power terms included in
$S_{U1}$
extend the measurement capabilities of power meters based on this standard.