Seismic retrofitting of an HV circuit breaker using base isolation with wire ropes. Part 2: Shaking-table test validation

Alessandri, Silvia; Giannini, Renato; Paolacci, Fabrizio; Amoretti, M; Freddo, Angelo Luiz

doi:10.1016/j.engstruct.2015.03.031

Cited by 48 publications

(20 citation statements)

References 10 publications

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“…Because of the great extent of damage to equipment and structures observed after recent earthquakes, substations are often considered to be the most vulnerable components in a power grid . The seismic performance of individual pieces of equipment and structures has recently undergone extensive study, and some modern techniques have been developed and applied to improve their seismic performance . Nevertheless, the seismic reliability of the entire substation system remains unclear because of its high degree of redundancy and physical interaction.…”

Section: Introductionmentioning

confidence: 99%

“…4 The seismic performance of individual pieces of equipment and structures has recently undergone extensive study, [5][6][7][8][9][10] and some modern techniques have been developed and applied to improve their seismic performance. [11][12][13] Nevertheless, the seismic reliability of the entire substation system remains unclear because of its high degree of redundancy and physical interaction.…”

Section: Introductionmentioning

confidence: 99%

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Probability‐based seismic reliability assessment method for substation systems

Li¹,

Wang²,

Shang³

2018

Earthq Engng Struct Dyn

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Summary Power systems play a key role in emergency rescue after an earthquake. Substations are among the most important components of a power system, so it is necessary to study their seismic reliability after an earthquake. Most studies, however, have focused on the seismic behavior of major electrical equipment or the reliability of the substation under ordinary operational conditions. The seismic reliability of substations as a system has not been thoroughly studied. This study proposes a new probability‐based method to evaluate the seismic reliability of complex engineering systems such as substations. The proposed method developed the state tree to construct a greatly simplified system model that enables the failure probability to be calculated for the whole system, with explicit consideration of correlations among various components. A typical 220/110/10‐kV substation was studied with this method, and the most critical components were identified.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Probability‐based seismic reliability assessment method for substation systems

Li¹,

Wang²,

Shang³

2018

Earthq Engng Struct Dyn

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“…According to their experimental work and the mathematical model of the isolator, a 420 kV circuit breaker is equipped with four wire rope isolators. Alessandri et al 8,9 designed a base isolation system that protects high voltage ceramic circuit breakers during seismic events based on an innovative application of wire rope isolators. Zhang et al 10 designed a damping device based on the wire rope vibration isolators and used it in the airborne optical system.…”

Section: Introductionmentioning

confidence: 99%

Analysis of vibration isolation performance of parallel air spring system for precision equipment transportation

Liu

et al. 2019

Measurement and Control

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Precision equipment is usually accompanied with vibrations during road or railway transportation. Sometimes the vibration exceeds the given limit, leading to the damage of the equipment. It is necessary to control the vibration during the transportation. However, it is still difficult to adjust the parameters of a designed vibration isolation system for the transportation of different precision equipment under various road conditions. Aiming at satisfying the vibration isolation requirements of different precision equipment, this paper proposes a parallel air spring vibration isolation system based on the principle of limiting lateral deflection. According to the measured parameters, a rigid-body dynamics simulation model of parallel air spring vibration isolation system is established. Then its feasibility is verified, and the optimal parameters of the vibration isolation system are obtained by a simulation. Finally, the vibration isolation system is built and installed in the equipment to carry out the real vehicle transportation test. The test results show that the transportation vibration isolation system based on the parallel air spring structure has not only excellent vibration isolation efficiency but also acceptable lateral stability. The research results in this paper can provide a reference for the design of the vibration isolation system for the large precision equipment transportation.

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“…Giannini studied the use of wire rope devices for seismic protection of high voltage electrical equipment. Based on the results of an experimental campaign, the parameters of a classical Bouc–Wen model were identified, and the seismic response of a circuit breaker equipped with four wire rope isolators was numerically predicted.…”

Section: Introductionmentioning

confidence: 99%

Study of wire rope devices for improving the re-centering capability of base isolated buildings

Spizzuoco

Quaglini

Calabrese

et al. 2016

Struct. Control Health Monit.

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Wire rope devices have found numerous applications in the shock and vibration isolation of industrial machinery and equipment. The aim of the work is to present a preliminary investigation of their usefulness as a mean to increase the re-centering capability of the isolation system of a civil structure. In the first part of the study, analytical formulations have been developed to predict the restoring stiffness of wire rope devices depending on their material and geometrical properties, and the direction of loading. In the second part, a preliminary assessment of wire rope springs has been performed based on unidirectional shake table tests on a scaled steel structure isolated with curved surface slider and either or not provided with wire rope springs. The changes in the seismic response of the isolation system are analyzed and some suggestions for improving the use of wire rope devices are drawn

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Seismic retrofitting of an HV circuit breaker using base isolation with wire ropes. Part 2: Shaking-table test validation

Cited by 48 publications

References 10 publications

Probability‐based seismic reliability assessment method for substation systems

Probability‐based seismic reliability assessment method for substation systems

Analysis of vibration isolation performance of parallel air spring system for precision equipment transportation

Study of wire rope devices for improving the re-centering capability of base isolated buildings

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