The paper deals with the seismic vulnerability of high voltage electric equipment as a part of a research project financed by the National Group for the Defence against Earthquakes (VIA project). Using a procedure developed in the past by one of the author (EFA, Effective Fragility Analysis), an effective method for the evaluation of the fragility curves of high voltage electric equipment is proposed. On the basis of experimental results carried out at the laboratory of Department of Structures of the University of Roma Tre, the seismic vulnerability of a 380 kV vertical disconnecting switch have been investigated. According to the EFA method, the fragility curves of the equipment have been built using a limited number of numerical analyses. Finally the influence of the significant parameters on its failure probability has been investigated.
Paolacci, F., Giannini, R. (2005). Evaluation of seismic fragility of electrical insulators. In Safety and Reliability of Engineering Systems and Structures. Roma : G. Augusti, G.I. Shueller, M. Ciampoli.