Study on Seismic Response and Parameter Influence in a Transformer–Bushing with Inerter Isolation System
In this paper, a mechanical model of a transformer–bushing with an inerter isolation system (IIS) is established. An IIS is composed of an inerter element, a damping element, and a spring element connected in parallel between the same two terminals. Vibration control equations and frequency response...
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MDPI AG
2022-04-01
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Online Access: | https://www.mdpi.com/2075-5309/12/5/530 |
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author | Ruoyu Zhang Meigen Cao Jizhong Huang |
author_facet | Ruoyu Zhang Meigen Cao Jizhong Huang |
author_sort | Ruoyu Zhang |
collection | DOAJ |
description | In this paper, a mechanical model of a transformer–bushing with an inerter isolation system (IIS) is established. An IIS is composed of an inerter element, a damping element, and a spring element connected in parallel between the same two terminals. Vibration control equations and frequency response functions are also established. The influence of parameters on IIS, including inerter–mass ratio, damping ratio, and frequency ratio, was studied. In the extremum condition that represents the most efficient parameter set of inerter–mass ratio and damping ratio for relative displacement response ratio, an optimal design method was developed by exploiting a performance demand. Finally, the seismic response of the transformer–bushing with IIS was carried out to verify the isolation performance of IIS. The research shows that the equivalent mass coefficient and damping coefficient of IIS can be amplified by an inerter element and the inerter–mass ratio and damping ratio are reduced simultaneously under the conditions of meeting the performance demand after parameter optimization. Meanwhile, the parameter optimization design method proved to be effective for meeting the target demand of the relative displacement response of the bushing and tank, while base shear force and isolation displacement were reduced simultaneously. Based on the results from a response history analysis under ground motion records, IISs can significantly suppress the resonance response of a structure and the continuous vibration response in the stable state. The peak displacement can be reduced by 50% compared with a traditional isolation system. |
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issn | 2075-5309 |
language | English |
last_indexed | 2024-03-10T03:13:26Z |
publishDate | 2022-04-01 |
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spelling | doaj.art-386e1ac7363344b6a93252ea183adf462023-11-23T10:19:23ZengMDPI AGBuildings2075-53092022-04-0112553010.3390/buildings12050530Study on Seismic Response and Parameter Influence in a Transformer–Bushing with Inerter Isolation SystemRuoyu Zhang0Meigen Cao1Jizhong Huang2School of Mechanics and Engineering Science, Shanghai University, Shanghai 200444, ChinaSchool of Civil Engineering, North China University of Technology, Beijing 100144, ChinaInstitute for Conservation of Cultural Heritage, Shanghai University, Shanghai 200444, ChinaIn this paper, a mechanical model of a transformer–bushing with an inerter isolation system (IIS) is established. An IIS is composed of an inerter element, a damping element, and a spring element connected in parallel between the same two terminals. Vibration control equations and frequency response functions are also established. The influence of parameters on IIS, including inerter–mass ratio, damping ratio, and frequency ratio, was studied. In the extremum condition that represents the most efficient parameter set of inerter–mass ratio and damping ratio for relative displacement response ratio, an optimal design method was developed by exploiting a performance demand. Finally, the seismic response of the transformer–bushing with IIS was carried out to verify the isolation performance of IIS. The research shows that the equivalent mass coefficient and damping coefficient of IIS can be amplified by an inerter element and the inerter–mass ratio and damping ratio are reduced simultaneously under the conditions of meeting the performance demand after parameter optimization. Meanwhile, the parameter optimization design method proved to be effective for meeting the target demand of the relative displacement response of the bushing and tank, while base shear force and isolation displacement were reduced simultaneously. Based on the results from a response history analysis under ground motion records, IISs can significantly suppress the resonance response of a structure and the continuous vibration response in the stable state. The peak displacement can be reduced by 50% compared with a traditional isolation system.https://www.mdpi.com/2075-5309/12/5/530transformer–bushing systeminerter elementisolation systemstochastic responseparameter optimizationseismic response |
spellingShingle | Ruoyu Zhang Meigen Cao Jizhong Huang Study on Seismic Response and Parameter Influence in a Transformer–Bushing with Inerter Isolation System Buildings transformer–bushing system inerter element isolation system stochastic response parameter optimization seismic response |
title | Study on Seismic Response and Parameter Influence in a Transformer–Bushing with Inerter Isolation System |
title_full | Study on Seismic Response and Parameter Influence in a Transformer–Bushing with Inerter Isolation System |
title_fullStr | Study on Seismic Response and Parameter Influence in a Transformer–Bushing with Inerter Isolation System |
title_full_unstemmed | Study on Seismic Response and Parameter Influence in a Transformer–Bushing with Inerter Isolation System |
title_short | Study on Seismic Response and Parameter Influence in a Transformer–Bushing with Inerter Isolation System |
title_sort | study on seismic response and parameter influence in a transformer bushing with inerter isolation system |
topic | transformer–bushing system inerter element isolation system stochastic response parameter optimization seismic response |
url | https://www.mdpi.com/2075-5309/12/5/530 |
work_keys_str_mv | AT ruoyuzhang studyonseismicresponseandparameterinfluenceinatransformerbushingwithinerterisolationsystem AT meigencao studyonseismicresponseandparameterinfluenceinatransformerbushingwithinerterisolationsystem AT jizhonghuang studyonseismicresponseandparameterinfluenceinatransformerbushingwithinerterisolationsystem |