A general purpose definition of active current and non-active power based on German standard DIN 40110

摘要

Up to now reactive power and currents were only defined in common standards for symmetric systems of sinusoidal currents and voltages. Therefore a new German standard was developed, which includes the more frequent cases of asymmetric systems of non sinusoidal quantities concerning two-conductor- and multi-conductor-circuits. The new rules with the so called collective quantities are used to analyze and to estimate the power transfer between load and line. The results thereby obtained are the basis for the design of a compensator, as it is demonstrated by some examples.