高压隔离开关地震灾害评估
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摘要
震害表明,电力系统在地震时破坏严重。如何预测地震中电气设备的损伤风险,是生命线工程领域的重要课题。进行了高压隔离开关的地震灾害评估。采用具有柔性节点的有限元法建立设备的模型,用弹性时程分析法进行了设备的地震反应分析,在此基础上,采用强度破坏指标,计算了设备的地震破坏概率。以GW 4-220高压隔离开关为例,进行了其地震灾害评估,绘制了震害率曲线,可用以预测该型号隔离开关的震害情况。
The damage of electrical system in earthquake is tremendous,so it is important to predict the vulnerability of electrical equipments subjected to earthquake loading.Seismic damage assessment of the high voltage disconnect switch is conducted in this paper.The model is built applying the finite element method with flexible joints and the seismic response of the equipment is analyzed using time history method.On such basis,according to the intensity breakage index,the seismic damage rates are counted and the seismic fragility curves are presented.Then the seismic damage assessment of GW4-220 disconnector switch is analyzed.
The damage of electrical system in earthquake is tremendous,so it is important to predict the vulnerability of electrical equipments subjected to earthquake loading.Seismic damage assessment of the high voltage disconnect switch is conducted in this paper.The model is built applying the finite element method with flexible joints and the seismic response of the equipment is analyzed using time history method.On such basis,according to the intensity breakage index,the seismic damage rates are counted and the seismic fragility curves are presented.Then the seismic damage assessment of GW4-220 disconnector switch is analyzed.
引文
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[4]GB 50260-96.电力设施抗震设计规范[S].
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[11]艾晓秋.基于随机地震动模型的地下管线地震反应及抗震可靠度研究[D].上海.同济大学.2005.
[2]Anagnos T.Development of an Electrical Substation Equipment Performance Database for Evaluation of Equipment Fragilities[R].PEER Report.Pacific Earthquake Engineering Research Center,1999.
[3]陈淮,李杰.高压电气设备的抗震可靠度分析方法[J].世界地震工程,2000,16(2):19-23.
[4]GB 50260-96.电力设施抗震设计规范[S].
[5]李杰.生命线工程抗震-基础理论与应用[M].北京:科学技术出版社,2005.
[6]赵玉祥.电瓷型高压电气设备的抗震性能研究[D].上海:同济大学,1987.
[7]江建华,廖松涛,李杰.高压电气设备的抗震可靠度分析[J].工程抗震,2001,4:37-42.
[8]Hwang Howard,Liu Jing bo,Chiu Yi-huei.Seismic fragility analysis of highway bridges[R].MAE Center RR-4 Project.
[9]楼思展,叶志明,陈玲俐.框架结构房屋地震灾害风险评估[J].自然灾害学报,2005,14(5):99-105.
[10]李桂荣,郭恩栋,朱敏.供电系统抗震性能分析[J].世界地震工程,2004,20(4):107-111.
[11]艾晓秋.基于随机地震动模型的地下管线地震反应及抗震可靠度研究[D].上海.同济大学.2005.
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