The different options regarding power components in electric circuits

This present paper describes two methods of representation of voltages and currents in electric circuits: in the vector form and in the shape of oscillations, represented as diagrams in the plane. The appropriate power components are discussed depending on the representation of voltages and currents. A special attention is paid to the instantaneous power peculiarities for diverse loads and nonsinusoidal conditions. A case study of power calculations in electric circuit with pluggable capacitor is presented. For this type of transient modes, the instantaneous power is represented in the form of active and reactive components. Calculation of active, reactive and exchange powers for steady-state processes are presented.