Energy Meter

i think energy-meter measure kwh

Does the tariff charged penalise low power factor?

It depends on the type of meter that you have. All meters measure watt-hours (volts * amps * PF) but many polyphase meters can also measure volt-amps and volt-amps reactive. You can always get this data from your electricity provider.

Some modern electronic meters are capable to measure KWH, KVARH, KVAH, V, I, pf etc.. Also some meters shows powers with selectable display. (MWH, 0.1KWH, KWH, WH etc....

Now find demand charges according to your tariff. (Name it as Amount1)

Then substract the capcitance reactance that you intended to use for compensation from the present MVAR. (Name the difference as MVAR1)

Then find the phasor sum of MVAR1 and the present MW. That will be your new demand if compensation was used.

Also you can calculate the difference in maximum demand if compensation was used.

Then calculate the new demand charges according to your tariff (Amount2).

Then find the difference between Amount1 and Amount2. You will get the amount that you can save.

When you use compensation, current flow through your transformer for supplying reactive power will get reduced. As a result some active energy (copper loss in transformer due to reactive current because of deficient capacitance) will be get reduced.

If you consider this losses also, you will get more accurate result.

your consumption is in terms of KWHr so basically it is what your paying..on the other hand as we approach it differently, your KVARhr is just its adjacent consumption not shown in your bill...mostly it goes to your system charges..

What the reactive power is also included in it while calculating consumption? Someone is wrong here i have seen taking MWh only to calculate the monthly bill.

Yes you are correct. KWH is the real consumption. But according to some tariff, we have to pay demend charges also. Increase in reactive power also will increase KVA. That means your demand getting high. It depends on how your tariff is.

Also are alloweded to take KVA up to a limlit. If we are crossing that limit, not only demend charges but also penalty should be pay.

what youre looking is just your (K or M)WHr consumption that is directly encoded in your bills but try looking at it one more time and see that you are also paying for demand charges,system losses, and other charges there is...then try digesting/disecting it or maybe ask someone from the distribuiton group then youll know why..

Yes you are correct. KWH is the real consumption. But according to some tariff, we have to pay demend charges also. Increase in reactive power also will increase KVA. That means your demand getting high. It depends on how your tariff is.

Also are alloweded to take KVA up to a limlit. If we are crossing that limit, not only demend charges but also penalty should be pay.

Guest,

I apologize for the myriad of semi-confusing responses, but please understand that this forum is a safe place for some very brilliant folks to both share what they understand and to learn at the same time.

You will begin to notice that here we soon grow comfortable revealing and discovering our 'missing links' within our knowledge base, but do not suffer the social judgements that usually impair learning once we are assumed brilliant.

With that, I would remind the responders to focus on the questions that were posed in the original post for the benefit of our guest.

Our Guest asked us to help him equate monetary value to the capacitance component of an electrical system, a specific and well-covered subject on this forum.

Guest, you will find a great deal of discussion on this subject simply by utilizing the search feature provided by CR4 in the right hand column.

Based on the wide-ranging responses above, I am compelled to point out that electricity systems always contain ALL of the various components discussed above. Whichever component is chosen to be metered and then billed for by a rate schedule (tariff), the basic idea is that the cost of producing and delivering energy must be adequately compensated or it will cease to be available.

Regards, CJM