Parameter Selection of the Saturable Reactor for Removing Ferroresonance of 362kV Gas VT Using EMTP

EMTP를 이용한 362kV Gas VT의 철공진제거를 위한 가포화리엑터의 파라미터 선정

  • 최재구 (한국전기연구원 산업협력부) ;
  • 김익수 (한국전기연구원 산업협력부) ;
  • 박경원 ((주) 효성 중공업연구소 전력팀) ;
  • 송희석 ((주) 효성 중공업연구소 전력팀)
  • Published : 2001.04.01

Abstract

Recently, the construction of gas insulated substation(GIS)s has been increased in Korea. But, the whole quantity of the VTs which were used in GIS has been imported. Under the circumstance that $SF_6$ gas power apparatus are being developed up to 800kV rating in Korea, the development of EHV $SF_6$ gas VT is essential for localizing the power apparatus. As for EHV VT, destructive ferroresonance can be generated due to the combination of capacitiances between poles of circuit breaker, ground capacitance of bus and nonlinear excitation property of VT core. But the theoretical analysis about ferroresonance has not been fully achieved in Korea. Therefore, in this paper the authors would like to contribute for localizing EHV $SF_6$ gas VT by developing the diagram of ferroresonance zone according to the parameters of the circuit and the saturable reactor.

Keywords

References

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