By what means to you suggest these sources are unreliable!? It's been several years since I was in school, but these sources are consistent with my education as an electrical engineer.

Please read my last post more closely. You're indirectly charged more because you use more Real Power to get the same tasks done in your home if you suffer from a poor power factor.

I'm trying to state my sources and be as factual as possible. Are you guys suggesting that my statements are my opinion? I believe they are facts (laws of physics which can't be disputed). I'm open to the idea of being told that I'm wrong or ignorant, but please respond with constructive information I can learn from if that be the case.

 

This article (previously posted) explains the answer to your question and is consistent with my education on the subject.
POWER FACTOR CORRECTION

 

Ahh I've never seen a Reactive Power Charge on my Hydro bill. Guess it's a local thing.

Here's my prediction, lets say you fix all your reactive power inefficiencies in your home and lets say the whole neighborhood. I'd be willing to bet the charge won't disappear of your bill.

PS I'd stick with putting up solar panels and a GTI.

__________________
Bill
Smart Kits build Smart People
http://www.blueroomelectronics.com/

 

It seems like everyone is against me. So, I must conclude that I'm not doing a good job of explaining myself. Let me try again...

There is NO Power Factor or Reactive Power charge on my electric bill. I'm charged for Real Power like all of you. However, if you have a washing machine with a poor power factor, you end up using more Real Power to run one cycle than you would if you use the correct amount of capacitance to improve the power factor. I don't think this is disputable. I believe it is a fact and there are many websites that confirm this.

 

How will you measure your washing machines current PF?

__________________
Bill
Smart Kits build Smart People
http://www.blueroomelectronics.com/

 

I think that takes us slightly off topic and may better be discussed in a different thread. Before we diverge down that path, I want to get to the root of something first. Can we agree on this statement: A poor power factor results in more cost to the home owner for running the same appliances than if a better power factor were in place.

 

And I'm asking why does it make you use more real power? The link you posted does not discuss power facter affecting real power at all.

The only supposition I can think of is if you are near the limits of your power lines. The extra apparent power would increase the power dissipation from those lines, hence losing efficiency. But that would be only when your pussing enough current (apparent and real) to start heating up the lines.

 

Umm. Can't agree with that, sorry.

Apparent power cannot be used by an appliance. The effect it causes is on the distribution lines and transformers of the system, due to additional current harmonics that put additional stress on the distribution lines. This power cannot be harnessed though.

 

Please review the link again: POWER FACTOR CORRECTION

These sections were copied & pasted directly from that link

What does it do to my electricity bill?
In a 3 phase supply, kW consumed is (VOLTS x AMPS x 1.73 x Power Factor) / 1000. The Electricity Company supply you VOLTS x AMPS and they have to supply extra to make up for the loss caused by poor Power Factor

Why do I need Power factor correction?
Capacitive Power Factor correction (PFC) is applied to electric circuits as a means of minimising the inductive component of the current and thereby reducing the losses in the supply.
The introduction of Power Factor Correction capacitors is a widely recognised method of reducing an electrical load, thus minimising wasted energy and hence improving the efficiency of a plant and reducing the electricity bill.

 

"Check your electricity bill to see what your power factor is! "

There is one HUGE assumption made by that page. It is moot for homes since you aren't charged for poor power factor.

 

A motor is designed to run without power factor correction. It draws a certain amount of real current. If it has its power factor corrected with a capacitor then it does not draw less real current. Instead the utility supplies less or none apparent current. But your home is billed for Real Power, not apparent power.

In Google I asked, "Does Power Factor Correction Reduce The Electricity Bill?" All answers said no at home but said maybe if you have a factory.

__________________
Uncle $crooge

 

Interesting thread, The place I work put in a Capacitor bank (PF correction device), as we run 3 fans 4 pumps continually with other inductive loads kicking in and out through out the day. I saw an immediate decrease in the electric bill, 10%-20% the average bill was $1100.00 now I see the average at $900.00.
Most of this is resistive loads but a fair amount is inductive. As far as I know we have a residential meter, so I would have to say in our case it has saved a lot of cash in the first year.

__________________
Mike2545

 

Everyone, with the exception of yourself, disagrees entirely.

The quote you gave

clearly refers to industrial use, hence the use of 'plant' - where the electricty company monitor the PF and charge accordingly. This doesn't apply to domestic useage.

__________________
PIC programmer software, and PIC Tutorials at:
http://www.winpicprog.co.uk

 

"Real" current is is a very specific term in electrical engineering, that is that which is in phase with the voltage.

The residential customer is charged only for that portion of the current he draws which is in phase with the voltage.

There is a specific engineering term for the current which is not in phase with the voltage. This current is called "imaginary". Although this current exists and can be measured, the residential customer is not charged for it. "Imaginary" or reactive current does no work, and except for inevitable losses, is returned (reflected) to the power company.

Your ammeter is not aware of phase, so taking a voltage reading and then a current reading gives VA, which is the total of Real and Imaginary power.

A motor will draw power to do work, plus some inductive (imaginary) current which it returns to the power company later. In the simplest case of a pf correcting capacitor, the cap draws imaginary current with the opposite phase from the motor. The goal is that the net outcome is the power company doesn't have any "imaginary" current flowing in and out of the customer premises and therefore is only providing "real" (in phase) current.

You knew all this. Where am I going?

The industrial customer is billed for the real power (work) plus the out of phase (imaginary) current. He often has large inductive loads, and has an incentive to return the power factor to 1 so as to not waste the power company's distribution resources.

The residential customer has a sophisticated meter, but the choice was made for it to monitor only real power (work) and to the best of our knowledge the meters all ignore out of phase (imaginary) current.

A consumer device, however well intentioned, which corrects power factor in the residential environment, can not and does not save any meter clicks.

__________________
de KI6RWX

 

Thanks everyone for putting up with my questions thus far and for continuing to post information.

Just to beat this topic to death, let me try this one last time...
If I leave 5 ceiling fans running for a whole month in my home, all of you are saying that the I'll end up paying the exact amount whether or not I have power factor correction?

The part I'm hanging up on still is that I've been taught that a poor power factor will make an inductive load (like a fan) work harder. Meaning that to run at the same speed, the fan needs to use more Real Power than it would if it had a better power factor. The reason I'm beating this into the ground is because the YouTube videos I've seen for common power factor correction devices show you this concept very clearly with a DMM attached. What they show aligns perfectly with what I've been taught and I can't see any smoke or mirrors in the videos. It all looks legit.

Mike2545, if there is any easy way for you to determine if you have a residential meter, then I would be really interested in knowing. Please take a look at your previous and current bills to see if there is any mention of power factor charge. I'd appreciate your feedback as well.