Proceedings of the KIEE Conference (대한전기학회:학술대회논문집)

The Korean Institute of Electrical Engineers (대한전기학회)
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The Design of Control Algorithm for Unified Power Quality Compensator

3상 직병렬보상형 전력품질 보상장치(UPQC)의 제어 알고리즘 설계

  • Jeon Jin Hong (Korea Electro-technology Research Institute, Industry Applications Research Laboratory) ;
  • Kim Tae Jin (Korea Electro-technology Research Institute, Industry Applications Research Laboratory) ;
  • Ryoo Hong Je (Korea Electro-technology Research Institute, Industry Applications Research Laboratory) ;
  • Kim Hwang Su (Korea Electro-technology Research Institute, Industry Applications Research Laboratory)
  • 전진흥 (한국전기연구원 산업전기연구단) ;
  • 김태진 (한국전기연구원 산업전기연구단) ;
  • 류흥제 (한국전기연구원 산업전기연구단) ;
  • 김황수 (한국전기연구원 산업전기연구단)
  • Published : 2004.07.14
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Abstract

In recent years, customers and power supplies are interested in power quality. Demands of customers are change from standard quality of distribution power system to various high quality of distribution power system. so, it is necessary to apply power quality compensator. in our project, we develop the UPQC(Unfied Power Quality Compensator of 45kVA which compensates power factor and voltage sag, interruption. it is very frequently occurred power quality $problems^{[1-3]}$ As a series and shunt compensator, UPQC consists of two inverters with common do link capacitor bank. It compensates the current quality in the shunt part and the voltage quality in the series part. In this paper, we present the design and control algorithm for 4SkVA UPQC system. As a control algorithm is implemented by digital controller, we consider sample-and-hold of signals. In this simulation, we use EMTDC/PSCAD V3.0 software which can simulate instantaneous voltage and current.

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