Proceedings of the KIEE Conference (대한전기학회:학술대회논문집)

The Korean Institute of Electrical Engineers (대한전기학회)
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Analysis of the Ferroresonance Characteristics in 3 Phase Transformer Considering Lateral Length of the Primary Cable

1차측 케이블의 측면길이를 고려한 3상 변압기의 철공진 해석

  • Cho, K.S. (Dept. of Electrical Engineering, Konkuk University) ;
  • Kim, K.S. (Dept. of Electrical Engineering, Konkuk University) ;
  • Kim, H.C. (Dept. of Electrical Engineering, Konkuk University) ;
  • Shin, J.R. (Dept. of Electrical Engineering, Konkuk University)
  • Published : 1997.07.21
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Abstract

The ferroresonance characteristics in 3 phase transformer is analysed in this paper using EMTP simulations under the consideration of lateral length of the primary cable. The ferroresonant overvoltage or undervoltage may occur in cable-fed 3 phase transformer when single phase switching is made in relatively remote point from the transformer, and this phenomena is closely related to the lateral length of the cable. This paper shows the voltage characteristics concerned with the transformer ferroresonance and the proper lateral length of the cable for reducing the voltage in 3 phase installation, through some case studies.

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