Power Factor correction using a static capacitor
Calculation formulas as follows:
- Q1 = I losses + Cu losses
- Q2 = PkW · (Tanφ1 – Tanφ2)
- I losses = 2% · Str
- Cu losses = USC% · Str
- Q = Q1 + Q2
Where:
- Q1 = Reactive power to be compensated at the terminals of a transformer due to no load and load losses.
- Q2 = Reactive power to be compensated due to total reactive components of lighting, power and mechanical loads.
- Q = Overall reactive power to be compensated to achieve target power factor.
- I losses = Transformer no load losses = Iron core losses.
- Cu losses = Transformer load losses = Copper losses.
- Str = Transformer rating (KVA).
- P = Maximum demand load on the Main distribution board (kW).
- φ1 = Inverse cosine of power factor before compensation.
- φ2 = Inverse cosine of target power factor.
- Usc% = Short circuit percentage impedance voltage of the transformer.
Power Factor Values assumptions before compensation:
- For lighting outlets = 0.96
- For power outlets and receptacles = 0.8
- For motors = 0.8
Inputs = Transformer size + Transformer type + kVA Max. demand load for the whole system + PF before compensation + Target value of PF.
Outputs = Reactive power to be compensated at the terminals of a transformer due to no load and load losses.
- Reactive power to be compensated due to total reactive components of lighting, power and mechanical loads
- Overall reactive power to be compensated to achieve target power factor + circuit breaker size required to protect the capacitor bank.
| Software: | Power factor correction calculations for power system – MS Excel Spreadsheet |
| Version: | – |
| Developer: | Mahmoud Salama |
| Size: | 126 KB |
| Price: | – |
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Thanks for the article; please send me a copy of the spreadsheet…
I need to apply PF formula in excel spreadsheet, kindly tell me how??
Thanks for the Great effort.
Can you please email this excel sheet to me.
Thank you very much for your nice effort .
Please I need excel sheet for Power factor correction and other equipment for substation
Best wishes.
This very great. I NEED a copy of that spread sheet. Can you email it to me.
regards,
Peter
i need excel sheet of electrical load calculation
GOOD
Template very good how do I download?
Thank you
How do I download this spreadsheet
Hi, I would highly appreciate if you could share it with me. It will help me with my university.
Thank you.
need it for study
tnx ur cooperations
Hope we can do a schedule for PF correction instead of calculating each type of load separately
Thanks
good very nice
Need training on power factor correction
A 1000-KVA transformer is loaded to 850 KVA at a power factor of 0.82
lag. Calculate the leading kVAR necessary to correct the power factor to 0.95 lag.
If the transformer has a rated conductor loss equal to 1.0% of the transformer rating,
calculate the energy saved assuming 24-hour operation at the operating load.
very nice
hi, I seeking standard that report desirable Power Factor in distribution network.
is it possible anyone guide me.
sir request 1kva transformer design and calculation winding bobbin size select
testing report valve with reference range
send me sir pdf
Good topics,
Thanks so much.
thanks so much
Merci beaucoup pour votre contribution dans le métier
This is helping me to learn more. Infact I’m very happy, please keep it up
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Thank You for the article and the excel spreadsheet
THANKS FOR SUCH A GOOD INFORMATION & KNOWLEDGE.
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