Journal
JOURNAL OF EARTHQUAKE ENGINEERING
Volume 13, Issue 2, Pages 217-235Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/13632460802347448
Keywords
Fragility Analysis; Electric Equipment; Experimental Tests; Response Surface; Seismic Risk; Monte Carlo Simulations
Funding
- Italian National Group for the Defence against Earthquakes (GNDT)
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This article deals with evaluation of the seismic vulnerability of a high-voltage vertical disconnect switch, one of the most vulnerable elements of electric substations. The main objective of the research is to evaluate the seismic fragility of the apparatus using a new effective method. By combining standard reliability methods for time-invariant problems with the response surface technique, this original procedure called EFA (Effective Fragility Analysis) permits the evaluation of fragility curves using a very limited number of numerical simulations. On the basis of experimental tests, to determine the mechanical characteristics of the disconnect switch components (ceramic, joints, etc.) the fragility curves of the equipment analyzed are carried out. The results are discussed and compared with the results of Monte Carlo simulations, which confirm the reliability of the procedure.
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