Multibody Modeling Method for UHV Porcelain Arresters Equipped with Lead Alloy Isolation Device
This paper presents a multibody modeling method for seismic analysis of UHV porcelain surge arresters equipped with a kind of seismic isolation device. An UHV arrester is modeled as a planar multibody system whose number of DOF is equal to the number of the arrester units. Joint coordinate method is...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2021-01-01
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| Series: | Shock and Vibration |
| Online Access: | http://dx.doi.org/10.1155/2021/5549045 |
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| _version_ | 1832567478502293504 |
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| author | Xiaochao Su Lei Hou Zhubing Zhu Yushu Chen |
| author_facet | Xiaochao Su Lei Hou Zhubing Zhu Yushu Chen |
| author_sort | Xiaochao Su |
| collection | DOAJ |
| description | This paper presents a multibody modeling method for seismic analysis of UHV porcelain surge arresters equipped with a kind of seismic isolation device. An UHV arrester is modeled as a planar multibody system whose number of DOF is equal to the number of the arrester units. Joint coordinate method is adopted to construct the governing equations of motion. The seismic isolation device utilizing a number of lead alloy dampers as its core energy dissipation components is also investigated. An analytical model of this device is given by modeling each lead alloy damper as a hysteretic spring and reducing the entire device to a planar system consisting of a range of hysteretic springs. Its mechanical characteristic is derived theoretically, and the obtained moment-angle relationship is expressed as a system of differential algebraic equations. The initial rotational stiffness of the device is formulated in terms of the structural and mechanical parameters of the device. This analytic expression is used in estimating the fundamental frequency of the isolated equipment. By this modeling method, it is easy to construct the governing equations of motion for the isolated system. An UHV arrester specimen is analyzed by this proposed method. The effectiveness of the isolation device in terms of reducing the internal base moment is significant and the influence of system parameters on the effectiveness is also discussed. The proposed method shows its potential usefulness in optimal design of the isolation device. |
| format | Article |
| id | doaj-art-ca6be47f6be34494a0327d6da0bf7aa1 |
| institution | Kabale University |
| issn | 1070-9622 1875-9203 |
| language | English |
| publishDate | 2021-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Shock and Vibration |
| spelling | doaj-art-ca6be47f6be34494a0327d6da0bf7aa12025-02-03T01:01:25ZengWileyShock and Vibration1070-96221875-92032021-01-01202110.1155/2021/55490455549045Multibody Modeling Method for UHV Porcelain Arresters Equipped with Lead Alloy Isolation DeviceXiaochao Su0Lei Hou1Zhubing Zhu2Yushu Chen3School of Astronautics, Harbin Institute of Technology, Harbin 150001, ChinaSchool of Astronautics, Harbin Institute of Technology, Harbin 150001, ChinaChina Electric Power Research Institute, Beijing 102401, ChinaSchool of Astronautics, Harbin Institute of Technology, Harbin 150001, ChinaThis paper presents a multibody modeling method for seismic analysis of UHV porcelain surge arresters equipped with a kind of seismic isolation device. An UHV arrester is modeled as a planar multibody system whose number of DOF is equal to the number of the arrester units. Joint coordinate method is adopted to construct the governing equations of motion. The seismic isolation device utilizing a number of lead alloy dampers as its core energy dissipation components is also investigated. An analytical model of this device is given by modeling each lead alloy damper as a hysteretic spring and reducing the entire device to a planar system consisting of a range of hysteretic springs. Its mechanical characteristic is derived theoretically, and the obtained moment-angle relationship is expressed as a system of differential algebraic equations. The initial rotational stiffness of the device is formulated in terms of the structural and mechanical parameters of the device. This analytic expression is used in estimating the fundamental frequency of the isolated equipment. By this modeling method, it is easy to construct the governing equations of motion for the isolated system. An UHV arrester specimen is analyzed by this proposed method. The effectiveness of the isolation device in terms of reducing the internal base moment is significant and the influence of system parameters on the effectiveness is also discussed. The proposed method shows its potential usefulness in optimal design of the isolation device.http://dx.doi.org/10.1155/2021/5549045 |
| spellingShingle | Xiaochao Su Lei Hou Zhubing Zhu Yushu Chen Multibody Modeling Method for UHV Porcelain Arresters Equipped with Lead Alloy Isolation Device Shock and Vibration |
| title | Multibody Modeling Method for UHV Porcelain Arresters Equipped with Lead Alloy Isolation Device |
| title_full | Multibody Modeling Method for UHV Porcelain Arresters Equipped with Lead Alloy Isolation Device |
| title_fullStr | Multibody Modeling Method for UHV Porcelain Arresters Equipped with Lead Alloy Isolation Device |
| title_full_unstemmed | Multibody Modeling Method for UHV Porcelain Arresters Equipped with Lead Alloy Isolation Device |
| title_short | Multibody Modeling Method for UHV Porcelain Arresters Equipped with Lead Alloy Isolation Device |
| title_sort | multibody modeling method for uhv porcelain arresters equipped with lead alloy isolation device |
| url | http://dx.doi.org/10.1155/2021/5549045 |
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