What are active power , reactive power and apparent power? It is estimated that most electrical personnel are very clear about it, but when it comes to the calculation of active power, reactive power and apparent power, many electrical personnel may only know one but not the other. Simply put, active power is the integral average of instantaneous power in a period. For sinusoidal voltage and current, the real part of complex power is the active power. For non-sine periodic voltages and currents, the active power is the sum of the DC component power, the fundamental wave and the harmonic active power. In the sinusoidal current circuit, the imaginary part of the complex power and the reactive power supplied to the inductance is positive.
In AC circuit , we refer to the product of the voltage and the current effective value in the sinusoidal AC current circuit as the apparent power, that is, S=UI apparent power does not represent the power actually consumed by the AC circuit, but only represents the maximum power that the circuit may provide or the maximum active power that the circuit may consume. So how should active power, reactive power and apparent power be calculated? Let’s learn it with the editor below.
1 Calculation of active power
▼
2 Calculation of reactive power
▼
3 Calculation of apparent power
▼
Learn more:
Short circuit current calculation method (attachment: example calculation)
load current (attachment: calculation for example). It is recommended to collect
temporary electricity consumption calculation on construction site sharing
