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Seismic vulnerability assessment of a high voltage disconnect switch
Institution:1. Department of Engineering, Roma Tre University, Via Vito Volterra 62, 00146 Rome, Italy;2. Department of Architecture, Roma Tre University, Largo Giovanni Marzi 10, 00153 Rome, Italy;1. College of Civil Engineering, Tongji University, China;2. Key Laboratory of Performance Evolution and Control for Engineering Structures (Tongji University), Ministry of Education, China;1. China Electric Power Research Institute, No.33 Nanbinhe Rd, Xicheng District, Beijing 100055, China;2. Department of Civil and Construction Engineering, Swinburne University of Technology, John St, Hawthorn, Melbourne, Victoria 3122, Australia;1. Department of Civil, Structural and Environmental Engineering, University at Buffalo, State University of New York, Buffalo, NY 14260, USA;2. Bonneville Power Administration, Vancouver, WA, 98662, USA;1. Department of Civil, Structural and Environmental Engineering, University at Buffalo, Buffalo, NY 14260, USA;2. Department of Civil Engineering, Sharif University of Technology, Tehran, Iran;1. College of Civil Engineering, Tongji University, Shanghai 200092, China;2. College of Water Conservancy and Civil Engineering, South China Agricultural University, Guangzhou 510640, China
Abstract:This paper deals with the seismic vulnerability of high voltage equipment typically installed in electric substations. In particular, the seismic response of a 380 kV vertical disconnect switch has been investigated based on the results of an experimental campaign carried out at Roma Tre University. According to a series of non-linear analyses, the influence of the most significant parameters on the seismic behavior of this apparatus has been analyzed and the corresponding fragility curves have been evaluated by using the Effective Fragility Analysis method. The results showed a limited vulnerability of the disconnect switch, whose most critical parts are the bottom joint of the ceramic support column and the steel column base.
Keywords:HV electric equipment  Disconnect switch  Cyclic tests  Seismic response  Non-linear analysis  Effective fragility analysis  Seismic vulnerability
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