220kV隔离开关地震模拟振动台试验
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摘要
隔离开关是输变电系统中的重要设备,在历次地震中的损坏极其严重,其中瓷瓶根部断裂是其典型破坏特征。为此,文章采用220 kV隔离开关真型试件进行振动台试验研究,通过白噪声扫描和抗震试验,测定设备关键部位的位移、应变和加速度,从而分析支架结构型式和刀闸对瓷瓶响应的影响。结果表明,隔离开关动侧与静侧瓷瓶响应的相关程度显著,且支架的放大系数远超规范中指定参数。
As a key component of power transmission and distribution systems,disconnecting switches have suffered serious damage in previous earthquakes.Generally,typical destruction feature of disconnecting switches during earthquakes appears as the breaking at bottom of insulator porcelain posts.In this paper,shake table test on a full-scale disconnecting switch was carried out to study the seismic behavior of the equipment.Displacements,strains and accelerations of the critical parts of the equipment were measured under broadband white-noise tests and input ground motions.The influence of the supporting frame and blades on seismic responses of insulators was estimated.The test results indicate that the responses of the two insulators in the disconnecting switch are correlated,and the amplification factors of the supporting frame are larger than that specified in the specifications.
As a key component of power transmission and distribution systems,disconnecting switches have suffered serious damage in previous earthquakes.Generally,typical destruction feature of disconnecting switches during earthquakes appears as the breaking at bottom of insulator porcelain posts.In this paper,shake table test on a full-scale disconnecting switch was carried out to study the seismic behavior of the equipment.Displacements,strains and accelerations of the critical parts of the equipment were measured under broadband white-noise tests and input ground motions.The influence of the supporting frame and blades on seismic responses of insulators was estimated.The test results indicate that the responses of the two insulators in the disconnecting switch are correlated,and the amplification factors of the supporting frame are larger than that specified in the specifications.
引文
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[2]谢强,朱瑞元,屈文俊.汶川地震中500kV大型变压器震害机制分析[J].电网技术,2011,35(3):221-225.Xie Qiang,Zhu Ruiyuan,Qu Wenjun.Analysis on seismic failuremechanism of 500 kV high-power transformer during Wenchuanearthquake[J].Power System Technology,2011,35(3):221-225(inChinese).
[3]于永清,李光范,李鹏,等.四川电网汶川地震电力设施受灾调研分析[J].电网技术,2008,32(11):5-10.Yu Yongqing,Li Guangfan,Li Peng,et al.Investigation and analysisof electric equipment damage in Sichuan power grid caused byWenchuan earthquake[J].Power System Technology,2008,32(11):5-10(in Chinese).
[4]谢强.5.12汶川大地震电力系统震害调查初步报告[R].上海:同济大学生命线工程研究所,2008.
[5]Xie Qiang,Zhu Ruiyuan.Damage to electric power grid infrastructurecaused by natural disasters in China[J].IEEE Power and EnergyMagazine,2011,9(2):28-36.
[6]谢强.电力系统的地震灾害研究现状与应急响应[J].电力建设,2008,29(8):1-6.Xie Qiang.State-of-the-art of seismic disaster research and emergencyresponse of electric power system[J].Electric Power Construction,2008,29(8):1-6(in Chinese).
[7]Schiff A.Guide to improved earthquake performance of electricpower systems[R].Virginia:Americal Society of Civil Engineers,1999.
[8]Thornberry L R,Hardy R.Seismic simulation test program on typeCGCB-G 230 kV disconnect switch[R].Ala:Wyle Laboratories,1997.
[9]Gilani A S J,Whittaker A S,Fenves G L,et al.Seismic evaluationand analysis of 230 kV disconnect switches[R].California:PEER,2000.
[10]Takhirov S M.Fenves G L,Fujisaki E,et al.Seismic qualificationand fragility testing of line break 550 kV disconnectswitches[R].California:PEER,2004.
[11]吕宝龙,叶志明,陈玲俐.高压隔离开关地震灾害评估[J].自然灾害学报,2008,17(5):152-157.LüBaolong,Ye Zhiming,Chen Lingli.Seismic vulnerabilityassessment of high voltage disconnector switch[J].Journal of NaturalDisasters,2008,17(5):152-157(in Chinese).
[12]韩军科,朱全军,杨风利,等.基底隔震高压隔离开关抗震性能分析[J].电力建设,2008,29(6):39-42.Han Junke,Zhu Quanjun,Yang Fengli,et al.Analysis of quakeresistance performance of HV disconnecting switch with baseisolation[J].Electric Power Construction,2008,29(6):39-42(inChinese).
[13]黄峰,吕建国,朱祝兵,等.基于ANSYS的GW7-252隔离开关抗震减震性能分析[J].科技导报,2010,28(20):52-57.Huang Feng,LüJianguo,Zhu Zhubing,et al.Performance analysisof seismic shock protection and damping of GW7-252 isolatingswitch based on ANSYS[J].Review of Science and Technology,2010,28(20):52-57(in Chinese).
[14]谢强,王亚非.软母线连接电气设备地震模拟振动台试验研究[J].中国电机工程学报,2011,31(4):112-118.Xie Qiang,Wang Yafei.Shake-table test on earthquake simulation ofsubstation equipment interconnected by flexible bus[J].Proceedingsof the CSEE,2011,31(4):112-118(in Chinese).
[15]Institute of Electrical and Electronics Engineers.IEEE Std 693—2005recommended practice for seismic design of substations[S].NewYork:IEEE Press,2006.
[16]日本電学会.JEAG5003—1998電所等における電設備の耐震設計指針[S].东京:日本電学会,1998.
[17]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,1996.
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