1 / 18

Power Factor Correction

Power Factor Correction. KW KVA KVAR. Power Factor is the ratio between Power and Apparent Power Motors. Reasons behind P.F corrections. P.F = watts/va Or P.F = P/S. Formula P.F. Power Factor Improvement. Over Correction Individual power factor correction. Power Factor Improvement.

Download Presentation

Power Factor Correction

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. Power Factor Correction KW KVA KVAR

  2. Power Factor is the ratio between Power and Apparent Power Motors Reasons behind P.F corrections

  3. P.F = watts/va Or P.F = P/S Formula P.F

  4. Power Factor Improvement • Over Correction • Individual power factor correction

  5. Power Factor Improvement • Group power factor correction

  6. centralized automatic power factor correction Utility P.F Correction

  7. Common Types of Capacitors

  8. 3 Phase Capacitor

  9. Shunt Reactors Series Reactors Reactors

  10. Edmonton downtown network Calgary downtown network Underground Networks

  11. Reduce electrical costs. Reduce load losses of the distribution system. I²R Loss Increase the system's capacity. Maintain a better voltage regulation on the system. Improves P.F. Benefits of Power Factor Correction

  12. Capacitors hold charges High Quality Capacitors Capacitors in transit Safety

  13. Rules for P.F Calculations • Power input in a load is what the utility see as load • P= KW or W

  14. Power is constant KW or Watts Output power is what the customer sees KW or Watts Rules

  15. Cal. All Power Values @ original P.F 1st SmPmQm Cal. All Power Values @ New P.F (corrected p.f) Using Pm – constant Scor and Qcor or Delivered Rules

  16. Find the Qreq or the Q of the cap required to correct the P.F Qcap = Qm - Qcor Cal Size of Cap’s Xc value Xc = E²/Qcap Rules

  17. Cal the Cap size to μF C=1 x 106 / 2п f Xc Assume 60 Hz Rules

  18. Size the cap for total bank size if required per individual cap divide by 3 Remember Power is always constant Rules Qt = √S² - P²

More Related