Method for measuring parameters of power consumed by two-terminal network powered by sinusoidal alternating current with the frequency of 50 Hz and effective value of such two-terminal network voltage and current

摘要

the subject of the invention is the measurement method of parameters input power dwu00f3jnik powered voltage sinusoidalnie variable frequency 50 hz and the value of the effective voltage and current that dwu00f3jnika, is applicable in the study of electrical properties and their dwu00f3jniku00f3w behaviour in the circuits of single-phase power sinusoidalnie variable frequency 50 hz.the way is two simultaneous measurement of instantaneous voltage and current dwu00f3jnika and obtaining pairs of values u1 = u (t1) and i1 = and (t1) to the first measurement and u2 = u (t2) and i2 = and (t2) for the second measurement at the sampling frequency satisfying the condition: cf = 4f / (2n + 1),and then the processing and conversion of the instantaneous voltage and current and the calculation of the active power p model: p = 1 / 2 [i1 (t1) u1 (t1) + i2 (t2), u2 (t2)], the reactive power q model; q = - 1 / 2 [(i1 (t1), u2 (t2) - i2 (t2) u1 (t1))], an effective current value irms with formula (a), and makes value changing voltage urms model (b).