Voltage Variation

equotion in voltage variation Eb=n*c*flux

And flux will affected reactive power

It is so because inductance has greater transient effect when system parameters change.

Mathematics will bear this out.

I've always thought about this as the difference between a cubic relationship (the magnetic field from the rotor controlling voltage) and a squared relationship (the fuel delivered with the inertia of the prime mover for carry through) and the ability to compensate for changing conditions. Changing the flux to correct reactive power is much slower (takes a long time to collapse/expand a field) than adding more fuel to correct active power. That's why we never got into any serious breaking with DC Traction Motors, it took so long to reverse the field it wasn't efficient, we had to wait for AC inverters that could just change frequency to do serious breaking on Drilling Rigs and Locomotives. The same math applies to the rotating field in a generator.

When I teach this to Rig Electricians I compare it to a mug of beer, you have to pay for the foam (the reactive power or KVAR's) and the beer (the active power of KW's) you just have to tune the system for the most beer and least foam. The relationship holds for the time it takes to change the two.

The reactive power is a resolved component of the apparent power based on the phase angle, it has a steady amplitude lock as a determinant of its variable measure and of cause has no resolution of its own. Its values are are fixed and not in approximations or above required values.

Variation in system voltages, especially those in excess, will always get at it since has no resolved component and room for dissipation.

Dickson

I could not make head or tail from your answer!?

What ??

System voltage variation is sensitive to both, more or less equally.

When your active power varies, the reactive power varies in proportion to a ratio determined from the power factor (phase angle), which depends on the load circuit caracteristics...

LAA Lucke, I will like to know what you did not understand in my previous answer and why the answer had no head or tail.

I have seen ur response, does that have any relation with the no head no tail answer?

Look at the two answers again.

Ur response to my input is more of an insult and I belief our behaviours on this website are being checked.

Dickson.

According to me and power flow calculation, voltage is more sensitive for reactive power than the real power. What do you think gusy?