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Development of the Discrimination Algorithm for Event and Variation in Distribution System Using S-transform

S-transform을 이용한 배전계통의 이벤트와 변동 판별 알고리즘 개발

  • 이순정 (성균관대학교 정보통신대학) ;
  • 서훈철 (성균관대학교 정보통신대학) ;
  • 김철환 (성균관대학교 정보통신대학)
  • Received : 2011.12.30
  • Accepted : 2012.03.28
  • Published : 2012.05.01

Abstract

Recently, by increasing of devices which are sensitive to power quality, the deterioration of power quality has been accelerated. For this reason, the social and economic losses are increased. So not only correct measurement and evaluation, but also countermeasure for improvement of power quality is surely necessary for both electric power supplier and consumer. In this paper, the discrimination algorithm for events and variation occurred in distribution systems using S-transform is proposed. Firstly, we review for events and variations that occur in distribution system. Next, we simulate events and variations on various conditions using ElectroMagnetic Transient Program(EMTP). For the simulation, the IEEE 13 Node Test Feeder and KEPCO's distribution system is modeled. Finally, for the analysis, a modified wavelet transform known as S-transform is adopted to find out the characteristics of each events and variations.

Acknowledgement

Supported by : 한국연구재단

References

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