대한전기학회:학술대회논문집 (Proceedings of the KIEE Conference)

대한전기학회 (The Korean Institute of Electrical Engineers)
권호 표지

Voltage sag의 특성과 dq좌표변환을 이용한 검출법에 대한 연구

The Characteristics of Voltage Sag and a Study about Detection Algorithm Using the DQ Transformation

  • 김용상 (충남대학교 전기공학과) ;
  • 김도훈 (충남대학교 전기공학과) ;
  • 임상욱 (충남대학교 전기공학과) ;
  • 이교성 (충남대학교 전기공학과) ;
  • 김양모 (충남대학교 전기공학과)
  • Kim, Yong-Sang (Dept. of Electrical Engineering. Chungnam National University) ;
  • Kim, Do-Hun (Dept. of Electrical Engineering. Chungnam National University) ;
  • Yim, Sang-Wook (Dept. of Electrical Engineering. Chungnam National University) ;
  • Lee, Kyo-Sung (Dept. of Electrical Engineering. Chungnam National University) ;
  • Kim, Yang-Mo (Dept. of Electrical Engineering. Chungnam National University)
  • 발행 : 2003.07.21
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초록

Voltage sags are known as a serious problem causing mal-operation of equipment like computers, process controllers and adjustable-speed drives. In this paper, characterization of voltage sag and an overview of methods used in the mitigation of voltage sags are presented. Moreover a fast detection method for voltage disturbances is explored. The algorithm is based on the theory that allows a set of three-phase voltages be converted the d-q value. The utility input voltages are sensed and then converted to some quantities in the d-q transformation. And the difference between reference value and input value are showed that some disturbances happened in the system.

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