| 摘要 |
<p>The invention relates to a method and system for calculating the reactive power in disturbed three-phase networks, consisting of capturing signals from the system, analysing the transient state on the basis of the magnitudes captured, calculating the time phasors of voltages and currents and, with the values obtained, applying the symmetrical component method in the fundamental frequency. The voltage and intensity of the sequence having the greatest rms voltage value are selected from among the direct and inverse sequences and, for this frequency, the reactive intensity is obtained as the component of the intensity forming 90° with the voltage. Subsequently, the reactive intensity resulting from reactances is calculated using formula I = B * V and the reactive intensity resulting from transient disturbances is obtained. Other system parameters can be calculated on the basis of the aforementioned data.</p> |
