%0 Journal Article %T Instantaneous Power Analysis of a Three-Phase Electrical System by Sequence Components %A Liliana Marilena MATICA %J Journal of Computer Science and Control Systems %D 2008 %I Editura Universit??ii din Oradea %X There are many phenomenons that belong to what we associate as quality in electrical distribution networks. The negative and zerosymmetric sequence components characterize the non-symmetrical situations; the technical efficiency in electrical energy alimentation is reduced. One of the explication is the sense of the negative and zero components of the instantaneous power as the analyze presents. %K electrical distribution networks %K energy quality %K instantaneous power %U http://electroinf.uoradea.ro/reviste%20CSCS/documente/JCSCS_2008/JCSCS_2008_35_Matica_2.pdf