# Power Factor correction issue

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• #10370
therealabdo
Participant

Dear Engineer;

Actually i was working on installing a power factor correcting on a factory and i heard an info i just want to confirm it:
We all know that power factor correcting panels reduces the Kvar. and you get some discounts on the bill
What I heard is that with each 1 Kvar u SAVE, 10 Watta increases in ur consumption. Which means reducing Kvar will increase ur Watta which results a higher bill..but with the discounts u gain …the bill will be approximately the same…

What do u think?

#11801
Keymaster

Dear Community Member,

Power Factor Correction panels are generating some power losses, as any electrical equipment.

However, the energy savings resulting from the connection of these panels by far compensates their own losses. For example, by improving the power factor from 0.8 to 0.95, the total power losses in the overall system are reduced by 30%!

The electricity bill can be reduced by three factors:

– reduction of the kWh due to power losses,

– reduction of the kVA demand to the Utility,

– reduction or elimination of the kvarh charge, if any.

You can find on the web many case studies illustrating this.

Best regards,

Jacques Schonek

#11803
jones
Participant

therealabdo said:

Dear Engineer;

Actually i was working on installing a power factor correcting on a factory and i heard an info i just want to confirm it:

We all know that power factor correcting panels reduces the Kvar. and you get some discounts on the bill

What I heard is that with each 1 Kvar u SAVE, 10 Watta increases in ur consumption. Which means reducing Kvar will increase ur Watta which results a higher bill..but with the discounts u gain …the bill will be approximately the same…

What do u think?

I am not agreeing with you. If you increase the p.f It will definitely
reduce the bill. Basically P.f means capacitor. It just needs initial current
to charge the capacitor. Once it is charged, it acts as an open circuit. Well,
surely it consumes some energy which is negligible. Now if u r determined to
find the consumption of the capacitor, then please calculate with the basic
charging current calculation, which is available in any basic electrical
circuit book.

P.f basically  increase the power  angle of voltage and current in such a way  that,  it consume less active power for the
inductance load specifically and decrease the KVAR / dc component of the
machine. if u r not still convince come back to me.

#11814
olivier bouilliez
Participant

Hi,

I suggest you refer to the post made in 2009 on the blog of this site

/power-quality/5-8-electrical-equipment-harmonics-power-factor.html#more-1833

#12150
Spir Georges GHALI
Participant

therealabdo said:

Dear Engineer;

Actually i was working on installing a power factor correcting on a factory and i heard an info i just want to confirm it:
We all know that power factor correcting panels reduces the Kvar. and you get some discounts on the bill
What I heard is that with each 1 Kvar u SAVE, 10 Watta increases in ur consumption. Which means reducing Kvar will increase ur Watta which results a higher bill..but with the discounts u gain …the bill will be approximately the same…

What do u think?

Dear ;

Adding to what said before, you will have certainly a benefit and the bill, even with the losses of the capacitors, will be less, because the in Syria if the power factor is less than 0.90 you will pay some penalities plus the value of KVARh.

Regards.

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