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Study on Seismic Analysis and Test for Seismic Qualification of 245kV GIS

245kV 가스절연개폐장치의 내진성능 실증을 위한 시험 및 해석

  • Kim, Yu-Gyeong (Frontier Technology Institute, Hyundai Heavy Industries Co., ltd.) ;
  • Kwon, Tae-Hoon (Frontier Technology Institute, Hyundai Heavy Industries Co., ltd.) ;
  • Jeong, Yeong-Jin (Electro Electric Systems, Hyundai Heavy Industries Co., ltd.) ;
  • Kim, Hong-Tae (Electro Electric Systems, Hyundai Heavy Industries Co., ltd.) ;
  • Kim, Young-Joong (Korea Institute of Machinery and Materials)
  • 김유경 (현대중공업 미래기술연구소) ;
  • 권태훈 (현대중공업 미래기술연구소) ;
  • 정영진 (현대중공업 전기전자시스템 사업본부) ;
  • 김홍태 (현대중공업 전기전자시스템 사업본부) ;
  • 김영중 (한국기계연구원)
  • Received : 2012.12.28
  • Accepted : 2013.02.14
  • Published : 2013.05.01

Abstract

Gas insulated switchgear is large-sized electric equipment for providing a reliable supply of electric power. Recently, seismic tests of electric equipment using a shaking table have been mandated because seismic performance has become an increasingly important issue. However, basic analysis methods continue to be used because some electric equipment is too large for shaking table facilities. Thus, a reliable analysis method should be developed for large-scale electric equipment. This study aims to evaluate the seismic qualification of a 245kV GIS in accordance with IEEE-693 and to validate the analysis method by comparing it with test results. Both the test and the analysis showed that the 245kV GIS has proper seismic safety. Furthermore, the differences between the analysis and the test results are less than 10% for an accurately given mass, stiffness, and input acceleration. It is expected that this study can be used for the seismic qualification of large-scale electrical structures.

가스절연개폐장치(GIS)는 안정적인 전력공급을 위한 대규모 설비이다. 최근 전력설비의 내진성능 검증이 중요해짐에 따라 진동대를 이용한 실제적 내진 시험이 요구되고 있지만, 진동대 규모의 한계로 해석에 기반한 평가가 주로 진행되고 있다. 그러나 해석법은 실제 거동을 모사하기 어려워 결과의 신뢰도가 낮으므로 타당한 해석법 개발이 필요하다. 본 연구에서는, 시험과 해석을 병행하여 대형 전력기기인 245kV GIS의 내진성능을 검증하였고, 결과를 비교 분석하여 대형 구조물용 내진 해석 기법의 타당성을 평가하였다. 245kV GIS는 해석과 시험법에서 충분한 안전성을 보였고, 해석의 결과는 시험과 10% 이내의 차이를 보였다. 높은 신뢰성의 원인으로 질량, 강성, 입력 가속도를 분석하였다. 본 연구는 내진 시험을 수행 할 수 없는 대형 전력기기의 내진성능 실증에 활용될 수 있을 것으로 기대된다.

Keywords

References

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