Power Factor correction using 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: | FREE |
| Download: | Right here | Get Download Updates | Get Premium Membership |
Akram Mufaddal Alfadeel
very nice
Mojtaba Dadashi
hi, I seeking standard that report desirable Power Factor in distribution network.
is it possible anyone guide me.
md rahmat kamil
sir request 1kva transformer design and calculation winding bobbin size select
testing report valve with reference range
send me sir pdf
Segun Omotosho my
Good topics,
Thanks so much.
thanks so much
Jacques Habimana
Merci beaucoup pour votre contribution dans le métier
Isaac Asiedu Mensah
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Andres Avelar
LES AGRADEZCO POR LA OPORTUNIDAD QUE NOS DAN EN AMPLIAR NUESTROS CONOCIMIENTOS AL PRESENTAR EXCELENTES ARTÍCULOS. FELICIDADES
Jordan Araujo
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Hapsari Dewi
Thank You for the article and the excel spreadsheet
SUBODH JHA
THANKS FOR SUCH A GOOD INFORMATION & KNOWLEDGE.
Mahmoud Salama
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Abdul Azim Mohammad
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