NCEES # 131

[electric]

Can someone please explain, the relationship KVAR directly proportional to voltage square?

The charge of the capacitor is Q = 1/2(CV^2). How that relates to KVAR?

 

[knight1fox3]

Well perhaps a few definitions may help you.

The power triangle equation is S2 = P2 + Q2

real power (P) is defined as I2*R = V2/R

reactive power (Q) is defined as I2*X = V2/X

Does that help?

 

[BamaBino]

Well perhaps a few definitions may help you.
The power triangle equation is S2 = P2 + Q2

real power (P) is defined as I2*R = V2/R

reactive power (Q) is defined as I2*X = V2/X

Does that help?

I'm organizing my notes and worked problems according to the NCEES Power Exam Specifications outline.

Would you put this problem under:

II.A.4 Phasor diagrams or

IV.A.3 Power factor correction and voltage support?

Thanks

 

[Dolphin P.E.]

Well perhaps a few definitions may help you.
The power triangle equation is S2 = P2 + Q2

real power (P) is defined as I2*R = V2/R

reactive power (Q) is defined as I2*X = V2/X

Does that help?

I'm organizing my notes and worked problems according to the NCEES Power Exam Specifications outline.

Would you put this problem under:

II.A.4 Phasor diagrams or

IV.A.3 Power factor correction and voltage support?

Thanks

It is more likely a "Capacitor Derating".