Journal of the Korean Institute of Illuminating and Electrical Installation Engineers (조명전기설비학회논문지)

The Korean Institute of IIIuminating and Electrical Installation Engineers (한국조명전기설비학회)
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A Study on the Effects of Line Constants Models for the Overvoltage Analysis in EMTP

EMTP 선로모델이 과전압 해석결과에 미치는 영향에 관한 연구

  • 김경탁 (한국전력공사 전력연구원) ;
  • 곽주식 (한국전력공사 전력연구원) ;
  • 권동진 (한국전력공사 전력연구원) ;
  • 구교선 (한국전력공사 전력연구원) ;
  • 우정욱 (한국전력공사 전력연구원)
  • Received : 2010.06.24
  • Accepted : 2010.08.11
  • Published : 2010.10.31
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Abstract

There are several overvoltages by abnormal conditions in power system. We need to calculate these ovevoltages for the insulation design and the fault analysis. For these calculations, we used EMTP(Electro-magnetic Transients Program). During EMTP calculations, the accurate modelling of the equipments is very important for analysis results. In this paper, we considered the effects of the modelling condition's changes for transmission line within EMTP modelling cases of overvoltage analysis. Specially, we considered CB closing cases of 765[kV] system. So, we had changed the calculation frequencies of Line Constants, which is used for CB closing cases. In addition, we compared the calculation result and the measured result.

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References

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