한국지진공학회논문집 (Journal of the Earthquake Engineering Society of Korea)

  • 제18권5호
  • /
  • Pages.253-259
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  • 2014
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  • 1226-525X(pISSN)
  • /
  • 2234-1099(eISSN)
한국지진공학회 (Earthquake Engineering Society of Korea)
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케이블 장력 및 피뢰기의 강성 변화를 고려한 애자형 피뢰기의 동특성 시험 연구

Experimental Study on the Dynamic Characteristics of Porcelain Surge Arrestor Considering the Variation of Cable's Tension and Arrestor's Stiffness

  • 장정범 (한국전력공사 전력연구원) ;
  • 황경민 (한국전력공사 전력연구원) ;
  • 연관희 (한국전력공사 전력연구원)
  • 투고 : 2014.04.14
  • 심사 : 2014.08.06
  • 발행 : 2014.09.02
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초록

Porcelain surge arrestor is very vulnerable to earthquake but there is very few information on its dynamic characteristics which are necessary to the seismic design. Therefore, the dynamic characteristics of the porcelain surge arrestor are evaluated considering the variation of its cable tension and stiffness by shaking table test. The test results show that the first natural frequencies are 5.3 Hz and 5.2 Hz in the horizontal x- and y-axis directions, respectively, and higher than 30 Hz in the vertical z-axis direction, respectively. The installation of cable on the surge arrestor reduces the horizontal natural frequencies due to the constraint effect of the cable but cable tension has no effect on the natural frequency. Also, the natural frequency is proportional to the stiffness of the surge arrestor. This test result will be used for the seismic design and seismic capacity assessment of domestic substations and contribute to the stability of the electric power supply under earthquake event.

키워드

참고문헌

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피인용 문헌

  1. The Experimental Study on Seismic Capacity of 154 kV & 345 kV Main Transformer Bushings vol.22, pp.2, 2018, https://doi.org/10.5000/EESK.2018.22.2.087