基于ANSYS的GW7-252隔离开关抗震减震性能分析
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摘要
电力系统中的高压电气设备在地震中很容易受到破坏,因此进行抗震减震分析非常必要。抗震分析中常采用数值模拟和振动台实验相结合的方法,但设备造价比较高,数值模拟则是一个廉价且易于控制的分析手段。本文运用ANSYS软件建立GW7-252隔离开关的有限元模型,根据规范对设备输入共振调幅波进行时程反应分析,讨论原结构在共振调幅波作用下的动力学反应,然后采用中国电力科学研究院研制的减震器建立结构的减震模型,输入共振调幅波后,将减震模型的时程反应结果与原结构进行比较,减震效果良好。
The power failure during earthquake is usually caused by damages of high voltage equipment by the earthquake.Therefore,the vibration of electric structures should be reduced,to protect the electric system.In this paper,ANSYS software is applied to establish a finite element model of GW7-252 isolation switch,the time history for the resonance amplitude wave is analyzed according to the specifications of the device.The dynamical response of the original structure is discussed.A finite element damping model of the device with the shock absorbers developed by China Electric Power Research Institute is built,the simulated results are compared with those of the original structure.When the peak acceleration is changed from 0.15g to 0.465g,a seismic efficiency is varied from 37% to 75%.As the peak acceleration increases,the shock absorbers go into the process of plasticity energy consumption.When the peak acceleration is 0.465g,the safety factor of the isolating switch supporting porcelain is 0.41,but it becomes 1.72 with the shock absorbers.The results show that the shock absorbers are effective to reduce the structure vibration in earthquake.The metal shock absorbers designed by the passive energy dissipation method are easy to make and convenient to install,with good results.They can be widely used in high voltage electric equipment.
The power failure during earthquake is usually caused by damages of high voltage equipment by the earthquake.Therefore,the vibration of electric structures should be reduced,to protect the electric system.In this paper,ANSYS software is applied to establish a finite element model of GW7-252 isolation switch,the time history for the resonance amplitude wave is analyzed according to the specifications of the device.The dynamical response of the original structure is discussed.A finite element damping model of the device with the shock absorbers developed by China Electric Power Research Institute is built,the simulated results are compared with those of the original structure.When the peak acceleration is changed from 0.15g to 0.465g,a seismic efficiency is varied from 37% to 75%.As the peak acceleration increases,the shock absorbers go into the process of plasticity energy consumption.When the peak acceleration is 0.465g,the safety factor of the isolating switch supporting porcelain is 0.41,but it becomes 1.72 with the shock absorbers.The results show that the shock absorbers are effective to reduce the structure vibration in earthquake.The metal shock absorbers designed by the passive energy dissipation method are easy to make and convenient to install,with good results.They can be widely used in high voltage electric equipment.
引文
[1]王乐意.耗能减震结构的动力分析及优化设计[D].重庆大学土木工程学院,2007.Wang Leyi.Dynamic analysis and optimum design of the passive energy dissipation system[D].College of Civil Engineering,Chongqing University,2007.
[2]王恒新.邮电建筑和邮电通讯设备安装的隔震减震与控振技术概述[J].邮电设计技术,1999(4):34-39.Wang Hengxin.Telecommunications Technology,1999(4):34-39.
[3]周云.金属耗能减震结构设计[M].武汉:武汉理工大学出版社,2006.Zhou Yun.Design of metal energy dissipation shock-absorber[M].Wuhan:Wuhan University of Technology Press,2006.
[4]李嵩峰,张慧媛,薛茹.耗能减震技术的研究与进展[J].焦作大学学报,2001,15(2):52-54,65.Li Songfeng,Zhang Huiyuan,Xue Ru.Journal of Jiaozuo University,2001,15(2):52-54,65.
[5]张文芳,靳金平,崔路苗.工程结构耗能减震控制的研究与应用[J].工程抗震与加固改造,2005(S1):76-81.Zhang Wenfang,Jin Jinping,Cui Lumiao.Earthquake Resistant Engineering,2005(S1):76-81.
[6]程永锋,朱全军,卢智成.变电站电力设施抗震措施研究现状与发展趋势[J].电网技术,2008,32(22):84-89.Cheng Yongfeng,Zhu Quanjun,Lu Zhicheng.Power System Technology,2008,32(22):84-89.
[7]李亚琦.电瓷型高压电气设备体系抗震性能分析[D].北京:中国地震局地球物理研究所,2002.Li Yaqi.Seismic analysis of the porcelain high-voltage equipments system[D].Beijing:Institute of Geophysics,China Earthquake Administration,2002.
[8]中华人民共和国电力工业部.GB50260—96电力设施抗震设计规范[S].北京:中国计划出版社,1997.Ministry of Power Industry of the People's Republic of China.GB50260—96,Seismic design of power facilities[S].Beijing:China Planning Press,1997.
[2]王恒新.邮电建筑和邮电通讯设备安装的隔震减震与控振技术概述[J].邮电设计技术,1999(4):34-39.Wang Hengxin.Telecommunications Technology,1999(4):34-39.
[3]周云.金属耗能减震结构设计[M].武汉:武汉理工大学出版社,2006.Zhou Yun.Design of metal energy dissipation shock-absorber[M].Wuhan:Wuhan University of Technology Press,2006.
[4]李嵩峰,张慧媛,薛茹.耗能减震技术的研究与进展[J].焦作大学学报,2001,15(2):52-54,65.Li Songfeng,Zhang Huiyuan,Xue Ru.Journal of Jiaozuo University,2001,15(2):52-54,65.
[5]张文芳,靳金平,崔路苗.工程结构耗能减震控制的研究与应用[J].工程抗震与加固改造,2005(S1):76-81.Zhang Wenfang,Jin Jinping,Cui Lumiao.Earthquake Resistant Engineering,2005(S1):76-81.
[6]程永锋,朱全军,卢智成.变电站电力设施抗震措施研究现状与发展趋势[J].电网技术,2008,32(22):84-89.Cheng Yongfeng,Zhu Quanjun,Lu Zhicheng.Power System Technology,2008,32(22):84-89.
[7]李亚琦.电瓷型高压电气设备体系抗震性能分析[D].北京:中国地震局地球物理研究所,2002.Li Yaqi.Seismic analysis of the porcelain high-voltage equipments system[D].Beijing:Institute of Geophysics,China Earthquake Administration,2002.
[8]中华人民共和国电力工业部.GB50260—96电力设施抗震设计规范[S].北京:中国计划出版社,1997.Ministry of Power Industry of the People's Republic of China.GB50260—96,Seismic design of power facilities[S].Beijing:China Planning Press,1997.
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