The Transactions of The Korean Institute of Electrical Engineers (전기학회논문지)

The Korean Institute of Electrical Engineers (대한전기학회)
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Transient Analysis and Evaluation of 345kV Combined Transmission Line Connected with GIL

345kV급 GIL이 연계된 혼합송전선로의 뇌서지해석 및 평가

  • 장화윤 (원광대 대학원 전기공학과) ;
  • 이종범 (원광대 공대 전기정보통신공학부) ;
  • 김용갑 (원광대 공대 전기정보통신공학부) ;
  • 정채균 (한전 전력연구원)
  • Received : 2010.08.04
  • Accepted : 2010.10.20
  • Published : 2010.11.01
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Abstract

This paper describes the characteristic and effectiveness of combined GIL transmission line through lightning surge analysis. In addition the XLPE cable is analyzed in the same condition to compare with GIL. Lighting surge analysis is carried out by EMTP/ATP-Draw to obtain overvoltage of GIL and XLPE cable at service-point and load-out area of underground line. Propagation velocity is calculated in combined transmission lines with GIL and XLPE cable. The overvoltage is also analyzed on GIL and XLPE cable with or without arrester operation. The Analysis results show that overvoltage of GIL is occurred higher than XLPE cable at the same condition. Therefore it is evaluated that the application of GIL at the field should be considered cautiously when more detailed transient analysis, another electrical testes and economic evaluations are implemented.

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References

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