Journal of the Earthquake Engineering Society of Korea (한국지진공학회논문집)

Earthquake Engineering Society of Korea (한국지진공학회)
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Experimental Study on the Dynamic Characteristics of Porcelain Surge Arrestor Considering the Variation of Cable's Tension and Arrestor's Stiffness

케이블 장력 및 피뢰기의 강성 변화를 고려한 애자형 피뢰기의 동특성 시험 연구

  • 장정범 (한국전력공사 전력연구원) ;
  • 황경민 (한국전력공사 전력연구원) ;
  • 연관희 (한국전력공사 전력연구원)
  • Received : 2014.04.14
  • Accepted : 2014.08.06
  • Published : 2014.09.02
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Abstract

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.

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References

  1. KEPCO Research Institute. Seismic design guidelines for transmission and substation facilities, c2001.
  2. EERI. Northridge reconnaissance report, Earthquake Spectra, Supplement C. Oakland. c1995.
  3. Shinozuka M, ed. The Hanshin-Awaji earthquake of January 17, 1995 : Performance of lifelines. Technical Report NCEER-95-0015 Buffalo. c1995.
  4. Jang JB et al. Experimental study of friction pendulum system to improve the seismic capacity of transformer. Journal of the Earthquake Engineering Society of Korea. 2008;12(2):1-8.
  5. Jang JB et al. Experimental study of a seismic reinforcing system without power breakdown and movement for electric panel on the access floor. Journal of the Earthquake Engineering Society of Korea. 2009;13(3):1-10.
  6. Gilani AS, Chavez JW, Fenves GL. Whittaker AS, Seismic Evaluation of 550kV Porcelain Transformer Bushings. PEER. c1999.
  7. Gilani AS, Chavez JW, Fenves GL, Whittaker AS. Seismic Evaluation of 196kV Porcelain Transformer Bushings. PEER. c1999.
  8. Wilcoski J. Demonstration of CERL Equipment Fragility and Protection Procedure by Fragility Testing of a Power Transformer Bushing. ATC-29-1. Seminar Technical Papers. c1997.
  9. Villaverde R, Pardoen G. Ground Motion Amplification at Base of Bushings Mounted on Electric Substation Transformer. A Technical Report of Research Supported by PEER/PG&E Under Award No. PGE-09566. Department of Civil Engineering, University of California, Irvine. c1999.

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