Proceedings of the KIEE Conference (대한전기학회:학술대회논문집)

The Korean Institute of Electrical Engineers (대한전기학회)
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Analysis of the Harmonic Resonance during Restoration of Primary Restorative Transmission System

시송전계통 탁구과정에서의 고조파 공진 현상에 대한 고찰

  • Lee, H.J. (Dept. of Electrical Engineering Kwangwoon University) ;
  • Lee, K.S. (Dept. of Electrical Engineering Kwangwoon University) ;
  • Park, S.M. (Dept. of Electrical Engineering Kwangwoon University)
  • 이홍재 (광운대학교 전기공학과) ;
  • 이경섭 (광운대학교 전기공학과) ;
  • 박성민 (광운대학교 전기공학과)
  • Published : 2005.07.18
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Abstract

Power system restoration following a wide area or complete blackout starts with energizing primary restorative transmission systems. During this primary restoration process, unexpected over-voltage may happen due to nonlinear interaction between the unloaded transformer and the transmission system. This is known as the harmonic resonance phenomenon that may cause burning out of transformer or other devices. Since the harmonic resonance originates from the nonlinear characteristics, it is very difficult to predict the occurrence of this phenomenon. This paper reports the possible existence of the harmonic resonance in Korean power system. Analysis of the harmonic over-voltage is presented based on the various simulations using PSCAD/EMTDC.

Keywords