安装新型铅减震器的220kV断路器振动台试验
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摘要
通过对安装新型铅减震器的220 kV断路器振动台试验,分析了新型铅减震器的减震效果。试验结果表明:新型铅减震器不仅可以降低断路器顶部的加速度和位移,使底部瓷套管最大应变减少53%以上,而且输入地震动越强其减震效果越明显。此外,这种减震器还可为断路器提供一定的初始刚度。
To investigate the damping effect of new type lead dampers,a shaking table test of the breakers with a new type lead damper is carried out.The results of the test show that the lead dampers are well functioning,limiting the relative displacement and absolute acceleration at the top of bushing.There is above reduction of 53% in the maximum strain of bottom porcelain pipe and the stronger the input ground motion,the larger the reduction will be.Moreover,the lead dampers can provide a definite initial stiffness to the breakers.
To investigate the damping effect of new type lead dampers,a shaking table test of the breakers with a new type lead damper is carried out.The results of the test show that the lead dampers are well functioning,limiting the relative displacement and absolute acceleration at the top of bushing.There is above reduction of 53% in the maximum strain of bottom porcelain pipe and the stronger the input ground motion,the larger the reduction will be.Moreover,the lead dampers can provide a definite initial stiffness to the breakers.
引文
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[2]于永清,李光范,李鹏,等.四川电网汶川地震电力设施受灾情况调研分析[J].电网技术,2008,32(11):1-6.YU Yong-qing,LI Guang-fan,LI Peng,et al.Investigationand analysis of electric equipment damage in sichuanpower grid caused by Wenchuan earthquake[J].PowerSystem Technology,2008,32(11):1-6.
[3]MIRCEA P M,MANEA I,MIRCEA I.Structural analysisof high voltage electric equipment with a view to theseismic capability assessment[J].Journal of SustenableEnergy,2010 1(1):1-6.
[4]YE Zhi-ming,FENG Dong,CHEN Ling-li.Seismic responseand reliability of high voltage breaker based on stochasticearthquake model[J].Power and Energy EngineeringConference(APPEEC),2010,1(1):1-4.
[5]KELLY J M,SKINNER R I,HEINE A J.Mechanisms ofenergy absorption in special devices for use in earthquakeresistant structures[J].Bulletin of New Zealand NationalSociety for Earthquake Engineering,1972,5(3):63-88.
[6]WHITTAKER A S,BERTERO V V,THOMPSON C L.Seismic testing of steel plate energy dissipation devices[J].Earthquake Spectra,1991,7(4):563-604.
[7]吴从晓,周云,王廷彦.金属耗能器的类型性能及工程应用[J].工程抗震与加固改造,2006,28(1):87-94.WU Cong-xiao,ZHOU Yun,WANG Ting-yan.Types andperformance of metallic dampers and their engineeringapplications[J].Earthquake Resistant Engineering andRetrofitting,2006,28(1):87-94.
[8]李亚琦,李小军,刘锡荟.铅合金减震器的动力特性及适用范围[J].地震学报,2005,27(1):86-95.LI Ya-qi,LI Xiao-jun,Liu Xi-hui.Dynamic behavior andapplicability of lead alloy absorber[J].Acta Seismolo GicaSinica.,2005,27(1):86-95.
[9]李冀龙,欧进萍.铅剪切阻尼器的阻尼力模型与设计[J].工程力学,2006,23(4):67-73.LI Ji-long,OU Jin-ping.Damping force models and designsof lead shear dampers[J].Engineering Mechanics,2006,23(4):67-73.
[10]MONTI M D,ROBINSON W H.A lead shear dampersuitable for reducing the motion induced by wind andearthquake[J].Proc.11th WCEE,Acapuloo,Mexico,1996(271):23-28.
[11]周云,周福霖,邓雪松.铅耗能器的研究与应用[J].世界地震工程,1999,15(1):53-61.ZHOU Yun,ZHOU Fu-lin,DENG Xue-song.Research onlead damper and its application[J].World Information onEarthquake Engineering,1999,15(1):53-61.
[12]杨军,李黎,唐家祥,等.铅挤压阻尼器的试验研究[J].工程抗震与加固改造,2005,27(5):71-73.YANG Jun,LI Li,TANG Jia-xiang,et al.Experimentalstudy of lead extrusion dampers[J].Earthquake ResistantEngineering and Retrofitting,2005,27(5),71-73.
[13]NOMURA S,ISAO K,AMIKAWA T.Fundamental study ondamping capacity of lead bearing damper[J].J.Struct.Constr.Eng.AIJ,1999(526):153-160.
[14]GB 50260—96.电力设施抗震设计规范[S].GB 50260—96.Code for design of seismic of electricalinstallations[S].
[15]李忠献.土木工程结构试验[M].天津:天津大学出版社,2001.LI Zhong-xian.Theory and technique of engineering structureexperiments[M].Tianjin:Tianjin University Press,2003.
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