Power Factor how to calculate?

What is Power Factor? How to calculate Power Factor?

Power Factor how to calculate? |Power Factor (PF) is the ratio of working power or the true power of a circuit measured in kilowatts (kW) to apparent power or the total power running through the circuit measured in kilovolt Amperes (kVA).

What is Power Factor?

TRUE POWER (TP)

The actual amount of power dissipated by a circuit. This is measured in kiloWatts (kW).

Measuring True Power in a DC circuit

In DC circuits and purely resistive circuits, the total power supplied by the source is consumed by the resistance. Therefore, no energy losses happen due to the reactance and the Power Factor becomes 1.

Measuring True Power in an AC circuit.

Measuring True Power

REACTIVE POWER (RP)

During the operation, inductive and capacitive loads continuously drop voltages and draw current from the power source in its first cycle and return some part of it to the source in its next cycle. However, these voltage drops and current draws are in the form of heat or waste energy and they do not do any actual work. But it’s the phantom power which helps transformers to transform power, generators to generate power and motors to rotate. This form of power dissipation is measured in Volt Amperes Reactive (VAR) and called as Reactive Power.

Inductive and capacitive circuits also have voltage and current but no actual power consumption. Therefore, the expression of P=VI is no longer valid when calculating the True Power and it does not give the actual power consumed by the circuit. In the inductive and capacitive circuit voltage and current are not in phase and they are always out of phase with a phase difference between 0-90. Hence, to determine the real power of these circuits the phase difference between the voltage and current waveforms also should be taken into the equation.

Measuring Reactive Power

Measuring Reactive Power using Phase angle | How to calculate?

Let’s check whether our calculations are correct using the phase angle calculated in the next paragraph.

Measuring Reactive Power using Phase Angle

APPARENT POWER (AP) | How to calculate?

The combination of reactive power and true power. This is measured in Volt Amperes (VA).

Measuring Apparent Power

Why does this Power Factor this much important? | How to calculate?

Example No. 2

Let’s take device 1 and device 2 which are having same true power consumption but different PFs and calculate their current consumption.

It is observed that increasing the PF of the load decreases the amount of the drawn current from the source to do the same work. Therefore, it reduces the electrical bill also.

Why it is needed to fix the poor Power Factor?

  • Poor PF needs more power. Therefore, needs larger cables to draw power.
  • To reduce the reactive power penalty fee in the monthly electricity bill.
  • To reduce power losses and high heat gains in the power circuits.
  • To improve the power equipment’s life. (Like in Transformers)
  • To reduce voltage drops which leads to reduce the lifetime of the electric equipment.

Methods of fixing Power Factor

To improve the PF, it needs to add equal and opposite relative power to the circuit. For this, there are three main methods;

  1. Adding capacitors or capacitor banks (The most common method)

These devices are installed in parallel to the circuit. This is the cheapest method and their maintenance cost is also less. Most of the time Automatic Power Factor Control (APF) Panel is used with capacitors to sense the counter-reactive power requirement and switches between capacitors.

  1. Adding synchronous condenser

When a synchronous motor operates at no load and is over-excited, then it’s called a synchronous condenser. When a synchronous motor is over-excited by using a DC source it will start to act as a reactive current supplier to the circuit instead of the reactive current drainer. The largest power consumers use this method and it is a very costly method.

  1. Adding phase advancers

This device is used to improve the PF of the induction motors. It is an AC exciter which is connected to the main shaft of the induction motor and operates with the motor’s rotor circuit.


Related Posthttps://nextgenreaders.com/ingredients-of-spam/

Thanks for reading.

If you have any doubts or need further information regarding this topic, please comment below or send me an e-mail (nextgenerationreaders@gmail.com)

  • Subscribe to our mailing list and RSS feed to get notifications of upcoming documentaries.
  • Share this content on WhatsApp, Facebook, Pinterest and Twitter to support us.
  • For more info, recommends visiting ‘Ingredients’ YouTube channel.
  • Follow nextgenreaders on Twitter. @nextgenreaders
  • Like Ingredients on Facebook. Ingredients
  • Upvote nextgenreaders on reddit. u/nextgenreaders
  • Follow Ingredients on Pinterest. @nextgenreaders

This Post Has 62 Comments

    1. NextGenReaders

      Thanks a lot for this lovely feedback. Please subscribe to my e-mail list or to my RSS feed. I will definitely work hard to brings you another comprehensive documentary. Thank you again. You can contact me for more info through ppttovideos@gmail.com.

  1. Hairstyles

    Hey there! I could have sworn I’ve been to this site before but after checking through some of the post I realized it’s new to me. Anyways, I’m definitely happy I found it and I’ll be book-marking and checking back frequently!

    1. NextGenReaders

      Thanks a lot for this lovely feedback. Please subscribe to my e-mail list or to my RSS feed. I will definitely work hard to brings you another comprehensive documentary. Thank you again. You can contact me for more info through ppttovideos@gmail.com.

  2. Mabel

    What i do not realize is actually how you are now not actually much more neatly-appreciated than you may be now.
    You’re so intelligent. You know therefore significantly in the
    case of this matter, made me for my part consider it from numerous various angles.
    Its like women and men don’t seem to be fascinated unless
    it’s something to accomplish with Woman gaga! Your own stuffs great.

    Always take care of it up!

    1. NextGenReaders

      Thanks a lot for this lovely feedback. Please subscribe to my e-mail list or to my RSS feed. I will definitely work hard to brings you another comprehensive documentary. Thank you again. You can contact me for more info through ppttovideos@gmail.com.

  3. sikis izle

    I think this website contains some really great info for everyone : D. Debor Leonhard Yuri

    1. NextGenReaders

      Thanks a lot for this lovely feedback. Please subscribe to my e-mail list or to my RSS feed. I will definitely work hard to brings you another comprehensive documentary. Thank you again. You can contact me for more info through ppttovideos@gmail.com.

  4. porno

    You made some nice points there. I looked on the internet for the subject matter and found most individuals will agree with your site.

    1. NextGenReaders

      Thanks a lot for this lovely feedback. Please subscribe to my e-mail list or to my RSS feed. I will definitely work hard to brings you another comprehensive documentary. Thank you again. You can contact me for more info through nextgenerationreaders@gmail.com.

  5. porno

    Hello! I could have sworn I’ve been to this blog before but after browsing through some of the post I realized it’s new to me. Anyways, I’m definitely happy I found it and I’ll be book-marking and checking back frequently!

    1. NextGenReaders

      Thanks a lot for this lovely feedback. Please subscribe to my e-mail list or to my RSS feed. I will definitely work hard to brings you another comprehensive documentary. Thank you again. You can contact me for more info through nextgenerationreaders@gmail.com.

  6. porno

    Hello! I could have sworn I’ve been to this blog before but after browsing through some of the post I realized it’s new to me. Anyways, I’m definitely happy I found it and I’ll be book-marking and checking back frequently!

    1. NextGenReaders

      Thanks a lot for this lovely feedback. Please subscribe to my e-mail list or to my RSS feed. I will definitely work hard to brings you another comprehensive documentary. Thank you again. You can contact me for more info through nextgenerationreaders@gmail.com.

  7. porno

    Hello! I could have sworn I’ve been to this blog before but after browsing through some of the post I realized it’s new to me. Anyways, I’m definitely happy I found it and I’ll be book-marking and checking back frequently!

    1. NextGenReaders

      Thanks a lot for this lovely feedback. Please subscribe to my e-mail list or my RSS feed. I will definitely work hard to brings you another comprehensive documentary. Thank you again. You can contact me for more info through nextgenerationreaders@gmail.com.

  8. porno

    You made some nice points there. I looked on the internet for the subject matter and found most individuals will agree with your site.

    1. NextGenReaders

      Thanks a lot for this lovely feedback. Please subscribe to my e-mail list or my RSS feed. I will definitely work hard to brings you another comprehensive documentary. Thank you again. You can contact me for more info through nextgenerationreaders@gmail.com.

  9. porno izle

    Hello! I could have sworn I’ve been to this blog before but after browsing through some of the post I realized it’s new to me. Anyways, I’m definitely happy I found it and I’ll be book-marking and checking back frequently!

    1. NextGenReaders

      Thanks a lot for this lovely feedback. Please subscribe to my e-mail list or my RSS feed. I will definitely work hard to brings you another comprehensive documentary. Thank you again. You can contact me for more info through nextgenerationreaders@gmail.com.

  10. porno

    Hello! I could have sworn I’ve been to this blog before but after browsing through some of the post I realized it’s new to me. Anyways, I’m definitely happy I found it and I’ll be book-marking and checking back frequently!

    1. NextGenReaders

      Thanks a lot for this lovely feedback. Please subscribe to my e-mail list or my RSS feed. I will definitely work hard to brings you another comprehensive documentary. Thank you again. You can contact me for more info through nextgenerationreaders@gmail.com.

  11. porno child

    Hello! I could have sworn I’ve been to this blog before but after browsing through some of the post I realized it’s new to me. Anyways, I’m definitely happy I found it and I’ll be book-marking and checking back frequently!

    1. NextGenReaders

      Thanks a lot for this lovely feedback. Please subscribe to my e-mail list or my RSS feed. I will definitely work hard to brings you another comprehensive documentary. Thank you again. You can contact me for more info through nextgenerationreaders@gmail.com.

  12. willis skar

    Hello! I could have sworn I’ve been to this blog before but after browsing through some of the post I realized it’s new to me. Anyways, I’m definitely happy I found it and I’ll be book-marking and checking back frequently!

  13. jaime grimaldi

    You made some nice points there. I looked on the internet for the subject matter and found most individuals will agree with your site.

  14. eilene oconner

    You made some nice points there. I looked on the internet for the subject matter and found most individuals will agree with your site.

  15. aletha asrari

    Hello! I could have sworn I’ve been to this blog before but after browsing through some of the post I realized it’s new to me. Anyways, I’m definitely happy I found it and I’ll be book-marking and checking back frequently!

  16. reid youell

    Hello! I could have sworn I’ve been to this blog before but after browsing through some of the post I realized it’s new to me. Anyways, I’m definitely happy I found it and I’ll be book-marking and checking back frequently!

  17. mina hartigan

    You made some nice points there. I looked on the internet for the subject matter and found most individuals will agree with your site.

  18. kandy lux

    Hello! I could have sworn I’ve been to this blog before but after browsing through some of the post I realized it’s new to me. Anyways, I’m definitely happy I found it and I’ll be book-marking and checking back frequently!

  19. jamey headings

    You made some nice points there. I looked on the internet for the subject matter and found most individuals will agree with your site.

  20. dione eagon

    Hello! I could have sworn I’ve been to this blog before but after browsing through some of the post I realized it’s new to me. Anyways, I’m definitely happy I found it and I’ll be book-marking and checking back frequently!

  21. beatrice flocke

    You made some nice points there. I looked on the internet for the subject matter and found most individuals will agree with your site.

  22. emil kitcher

    Hello! I could have sworn I’ve been to this blog before but after browsing through some of the post I realized it’s new to me. Anyways, I’m definitely happy I found it and I’ll be book-marking and checking back frequently!

  23. leone bracken

    You made some nice points there. I looked on the internet for the subject matter and found most individuals will agree with your site.

  24. hugh dupre

    You made some nice points there. I looked on the internet for the subject matter and found most individuals will agree with your site.

  25. jude allegrini

    Hello! I could have sworn I’ve been to this blog before but after browsing through some of the post I realized it’s new to me. Anyways, I’m definitely happy I found it and I’ll be book-marking and checking back frequently!

  26. josue yonkers

    You made some nice points there. I looked on the internet for the subject matter and found most individuals will agree with your site.

  27. leandra gore

    You made some nice points there. I looked on the internet for the subject matter and found most individuals will agree with your site.

  28. walker admas

    Hello! I could have sworn I’ve been to this blog before but after browsing through some of the post I realized it’s new to me. Anyways, I’m definitely happy I found it and I’ll be book-marking and checking back frequently!

  29. shelby bolding

    Hello! I could have sworn I’ve been to this blog before but after browsing through some of the post I realized it’s new to me. Anyways, I’m definitely happy I found it and I’ll be book-marking and checking back frequently!

  30. herman dumoulin

    You made some nice points there. I looked on the internet for the subject matter and found most individuals will agree with your site.

  31. erotik film izle

    Way cool! Some very valid points! I appreciate you penning this write-up and the rest of the site is very good. Charlean Garvin Germano

  32. erotik izle

    Thank you ever so for you blog article. Really thank you! Fantastic. Starlene Izaak Halfdan

  33. erotik film izle

    Its not my first time to visit this site, i am browsing this web page dailly and take nice data from here all the time. Rachel Hastings Eulalee

  34. porno

    Excellent post! We are linking to this particularly great post on our site. Keep up the great writing. Barbara Niki Lezley

  35. erotik izle

    Thanks for sharing your info. I really appreciate your efforts and I will be waiting for your next post thank you once again. Sybilla Freddy Tom

Leave a Reply