Analysis of power flow in UPQC during voltage sag and swell conditions for selection of device ratings

V. Khadkikar, A. Chandra, A. O. Barry, T. D. Nguyen

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

40 Scopus citations

Abstract

This paper deals with the steady state analysis of unified power quality conditioner (UPQC). The UPQC, a combination of shunt and series active power filter (APF), is one of the best solutions towards the mitigation of voltage sags and swells problems on distribution network. The mathematical analysis is based on active and reactive power flow through the shunt and series APF, wherein series APF can absorb or deliver the active power whereas the reactive power requirement is totally handle by shunt APF alone during all conditions. The derived relationship between source current and % of sag/swell variation shows shunt APF plays an important role in maintaining the overall power balance in the entire network. The digital simulation is carried out to verify the analysis done. The simulation results support the mathematical analysis. The effect of load VAR variation and the impact of% sag/ swell on the kVA ratings of both shunt and series APF are also analyzed. This analysis can be very useful for selection of device ratings for both shunt and series APFs.

Original languageBritish English
Title of host publication2006 Canadian Conference on Electrical and Computer Engineering, CCECE'06
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages867-872
Number of pages6
ISBN (Print)1424400384, 9781424400386
DOIs
StatePublished - 2006
Event2006 Canadian Conference on Electrical and Computer Engineering, CCECE'06 - Ottawa, ON, Canada
Duration: 7 May 200610 May 2006

Publication series

NameCanadian Conference on Electrical and Computer Engineering
ISSN (Print)0840-7789

Conference

Conference2006 Canadian Conference on Electrical and Computer Engineering, CCECE'06
Country/TerritoryCanada
CityOttawa, ON
Period7/05/0610/05/06

Keywords

  • Active Power Filter (APF)
  • Power quality
  • UPQC
  • Voltage sag
  • Voltage swell

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