This paper briefly describes the design and characterization of a new base isolation system that protects HV ceramic circuit breakers during seismic events to allow their qualification according to the European standard CEI EN 62271-207. The solution is based on steel cable dampers, which are also known as wire rope isolators. Preliminary numerical analyses and tests were performed on a typical HV circuit breaker and demonstrated the effectiveness of the proposed isolation system in reducing seismic demand. The results were also validated using a shaking table, which is described in an accompanying paper. The on-site installation of this system in several Italian substations has finally proved the simplicity to upgrade the equipment for seismic protection.
Alessandri, S., Giannini, R., Paolacci, F., Malena, M. (In corso di stampa). Seismic retrofitting of an HV circuit breaker using base isolation with steel cable dampers. Part I: Preliminary tests and analyses. ENGINEERING STRUCTURES.
Seismic retrofitting of an HV circuit breaker using base isolation with steel cable dampers. Part I: Preliminary tests and analyses
ALESSANDRI, SILVIA;Malena M.
In corso di stampa
Abstract
This paper briefly describes the design and characterization of a new base isolation system that protects HV ceramic circuit breakers during seismic events to allow their qualification according to the European standard CEI EN 62271-207. The solution is based on steel cable dampers, which are also known as wire rope isolators. Preliminary numerical analyses and tests were performed on a typical HV circuit breaker and demonstrated the effectiveness of the proposed isolation system in reducing seismic demand. The results were also validated using a shaking table, which is described in an accompanying paper. The on-site installation of this system in several Italian substations has finally proved the simplicity to upgrade the equipment for seismic protection.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.