# REACTIVE POWER

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• #10310
Keymaster

WHY REACTIVE POWER IS RETURNED TO SOURCE

#12030
Keymaster

Because The vector of current is leading the vector of voltage. Your load is capacitive

#12037
Nawaz
Participant

This can be viewed from other term too. As we know the average power consumed by a inductor or a capacitor over a complete cycle is zero.During the first half cycle a field builds up across the inductor and during the second half cycle the field collapses. So power has to be returned back to source

#12041
silver lining
Participant

Does reactive power return from the same path where it cames from?

Can u please detail it.

#12042
electricalexpert65
Participant

Nawaz said:

This can be viewed from other term too. As we know the average power consumed by a inductor or a capacitor over a complete cycle is zero.During the first half cycle a field builds up across the inductor and during the second half cycle the field collapses. So power has to be returned back to source

A bit of correction! It is not between the two half cycles. Even in the same half cycle, the charge builds up from zero to maximum in the first half of the half cycle and then from the peak to zero of the same half cycle, the built-up charge would discharge back to the source. Again, in the next half cycle, the same process is repeated albeit in the reverse polarity.

#12158
Spir Georges GHALI
Participant

Abdul Jabbar said:

WHY REACTIVE POWER IS RETURNED TO SOURCE

Dear Mr. Abdul Jabbar ;

I thnik you are talking about the reactive power that we have from ” Capacitors Bank “.

First, we should know that the ” Capacitors ” are like other ” Loads ” installed on the network, so, as we have an ” Inductive Loads ” and a ” Resistive Loads “, we have also a ” Capacitive Loads “, so, the current of the capacitve loads will run to the source. But from the point of view of the source we have the ” Vectorial Sum ” of 3 currents that are ” Inductive, Capacitive, and Resistive currents “.

Regards.

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