versión ISSN 0718-0764
MUNOZ, Nicolás; VILLADA, Fernando y CADAVID, Diego R. Analysis and Physical Interpretation of Electric System Power Flow . Inf. tecnol. [online]. 2012, vol.23, n.5, pp. 57-68. ISSN 0718-0764. doi: 10.4067/S0718-07642012000500007.
In this paper, the instantaneous power theory of the Institute of Electrical and Electronics Engineers (IEEE, Std. 1459 of 2010) used for single-phase electric systems is expanded to three-phase electric systems. A general instantaneous power expression is obtained through instantaneous voltages and currents. This expression is useful to explain the phenomena in electrical systems. This expression is also verified through experimental tests relating power flow and its causes. There are numerous instantaneous power expression reported in the literature, but these expressions do not relate physically and mathematically the electrical phenomena and its causes. For this reason, it is proposed to use the instantaneous power theory to explain physical phenomena in electrical systems contributing with a power theory that can be simultaneity used for measuring or monitoring to revenue purposes, for evaluating the power quality, for designing active filters, and for detecting sources of harmonic distortion.
Palabras clave : instantaneous power theory; power flows; active power; reactive power.