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Analysis of Transient Voltage by Lightning Stroke at 345kV Step-up Transformer

345kV 승압용 변전소의 뇌격에 의한 이상전압 해석

  • 조만영 (숭실대학교 대학원 전기공학과) ;
  • 신호전 (숭실대학교 대학원 전기공학과) ;
  • 허재선 (숭실대학교 대학원 전기공학과) ;
  • 김재철 (숭실대학교 전기공학부)
  • Received : 2012.08.30
  • Accepted : 2012.09.21
  • Published : 2012.10.30

Abstract

Typically, large scale power generation facilities are linked to 345kV transmission line through a step-up transformer. If the value of transient voltage by generating lightning stroke is large more than electric equipment's BIL, devices insulation is destroyed. LA(Lighting Arrester) is used as a main means of prevention. However, the installation of LA takes the constraints of installation place and expensive installation costs. Therefore, we need to carefully study whether installation of installation can be omitted and the most efficient place of installation. In this paper, we simulated the transient voltage detected by lightning stroke at each equipments in the 345kV transmission power grid by using EMTP-RV program.

Keywords

References

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