±800 kV直流旁路开关地震响应及减震措施
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摘要
在此前的地震中,与旁路开关结构形式类似的支柱类设备已经遭受过大量的破坏。为了研究旁路开关的抗震性能,文中首先以±800 k V直流旁路开关为原型建立有限元模型并进行了地震响应分析,结果表明,在组合相关荷载作用后,该设备无法满足抗震设计要求。文中建议了一种在设备底部设置钢丝绳阻尼器和液压阻尼器组成的减震支座的方案,通过修正Bouc-Wen模型模拟钢丝绳阻尼器的滞回特性,对设置减震支座前后的设备进行地震响应分析。结果显示设置减震支座后,绝缘子根部应力响应大大减小,满足应力安全系数的要求,文中所述的减震支座能有效提高旁路开关的抗震性能。
The post class equipments,which are similar to the bypass switch,have experienced severe damage inthe past earthquakes. In order to study the seismic performance of the bypass switch,a finite element model,whichis based on a ±800 k V direct current bypass switch,is established. The seismic analysis shows that the bypass switchcould not satisfy the seismic request after combination with other corresponding loads. Then,an seismic resistancebearing system combining wire rope and viscous dampers is installed at the bottom of the bypass switch to decreaseits responses. The hysteretic curve of the wire rope is simulated by a modified Bouc-Wen model,then the seismic re-sponses of the bypass switch with and without seismic resistance are analyzed. The results show that with the seismicresistance bearing system,the stress at the bottom of the insulator is greatly decreased and the safety factor is largerthan the requirement. The seismic resistance bearing here can effectively improve the seismic performance of the by-pass switch.
The post class equipments,which are similar to the bypass switch,have experienced severe damage inthe past earthquakes. In order to study the seismic performance of the bypass switch,a finite element model,whichis based on a ±800 k V direct current bypass switch,is established. The seismic analysis shows that the bypass switchcould not satisfy the seismic request after combination with other corresponding loads. Then,an seismic resistancebearing system combining wire rope and viscous dampers is installed at the bottom of the bypass switch to decreaseits responses. The hysteretic curve of the wire rope is simulated by a modified Bouc-Wen model,then the seismic re-sponses of the bypass switch with and without seismic resistance are analyzed. The results show that with the seismicresistance bearing system,the stress at the bottom of the insulator is greatly decreased and the safety factor is largerthan the requirement. The seismic resistance bearing here can effectively improve the seismic performance of the by-pass switch.
引文
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[19]DEMETRIADES G F,CONSTANTINOU M C,REINHORN A M.Study of wire rope systems for seismic protection of equipment in buildings[J].Engineering Structures,1993,15(5):321-334.
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[22]PAOLACCI F,GIANNINI R.Study of the effectiveness of steel cable dampers for the seismic protection of electrical equipment[C]//Proceedings of 14th World Conference on Earthquake Engineering.[S.l]:[s.n.],2008:12-17.
[2]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 emergency response of electric power system[J].Electric Power Construction,2008,29(8):1-6.
[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):1-6.YU Yongqing,LI Guangfan,LI Peng,et al.Investigation and analysis of electric equipment damage in Sichuan power grid caused by wenchuan earthquake[J].Power System Technology,2008,32(11):1-6.
[4]张伯艳,杜修力,吴忠,等.550 k V高压开关抗震性能计算分析[J].工程抗震与加固改造,1999(2):34-37.ZHANG Boyan,DU Xiuli,WU Zhong,et al.The aseismatic analysis of 550 kV high voltage switchgear[J].EarthquakeResistant Engineering,1999(2):34-37.
[5]曹枚根,程永锋,代泽兵,等.瓷柱式断路器SF6的抗震性能及阻尼影响研究[J].武汉大学学报,2009(s1):267-272.CAO Meigen,CHENG Yongfeng,DAI Zebing,et al.Studyof aseismic performance and damping effects of porcelaincolumn circuit breaker SF6[J].Engineering Journal of Wu-han University,2009(s1):267-272.
[6]PAOLACCI F,GIANNINI R.Seismic reliability assessmentof a high-voltage disconnect switch using an effective fragili-ty analysis[J].Journal of Earthquake Engineering,2009,13(2):217-235.
[7]PAOLACCI F,GIANNINI R,ALESSANDRI S,et al.Seis-mic vulnerability assessment of a high voltage disconnectswitch[J].Soil Dynamics and Earthquake Engineering,2014(67):198-207.
[8]谢强,王健生,杨雯,等.220 k V断路器抗震性能地震模拟振动台试验[J].电力建设,2011,32(10):10-14.XIE Qiang,WANG Jiansheng,YANG Wen,et al.Shake ta-ble test on seismic performance of 220 k V circuit breaker[J].Electric Power Construction,2011,32(10):10-14.
[9]ZAREEI S A,HOSSEINI M,GHAFORY-ASHTIANY M.Evaluation of power substation equipment seismic vulnerability by multivariate fragility analysis:A case study on a 420 kV circuit breaker[J].Soil Dynamics and Earthquake Engineering,2017(92):79-94.
[10]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 quake resistance performance of HV disconnecting switch with base isolation[J].Electric Power Construction,2008,29(6):39-42.
[11]尤红兵,赵凤新.铅合金减震器在SF6断路器减震中的应用[J].电网技术,2010,34(11):221-226.YOU Hongbing,ZHAO Fengxin.Seismic-reduced effect of lead alloy absorber applied in SF6 circuit breakers[J].Power System Technology,2010,34(11):221-226.
[12]KONG D,REINHORN A M.Seismic evaluation and protection of high voltage disconnect switches[C]//Technical Council on Lifeline Earthquake Engineering Conference.[S.l]:[s.n.],2009:1-11.
[13]卢智成,程永锋,代泽兵,等.基底隔震电气隔离开关的动力反应分析[J].武汉大学学报,2009(s1):261-266.LU Zhicheng,CHENG Yongfeng,DAI Zebing,et al.Dynamic response analysis of electrical disconnector with base isolation[J].Engineering Journal of Wuhan University,2009(s1):261-266.
[14]ALESSANDRI S,GIANNINI R,PAOLACCI F,et al.Seismic retrofitting of an HV circuit breaker using base isolation with wire ropes.Part 1:Preliminary tests and analyses[J].Engineering Structures,2015(98):251-262.
[15]ALESSANDRI S,GIANNINI R,PAOLACCI F,et al.Seismic retrofitting of an HV circuit breaker using base isolation with wire ropes.Part 2:Shaking-table test validation[J].Engineering Structures,2015(98):263-274.
[16]李圣,卢智成,邱宁,等.加装金属减震装置的1 000 k V避雷器振动台试验研究[J].高电压技术,2015,41(5):1740-1745.LI Sheng,LU Zhicheng,QIU Ning,et al.Study on shaking table test of 1 000 k V surge arrester with metal damper device[J].High Voltage Engineering,2015,41(5):1740-1745.
[17]PROST C,PARTYKA J.Using wire rope isolators for seismic protection[J].Sound and Vibration,2016,50(5):8-11.
[18]电力设施抗震设计规范:GB 50260—2013[S].北京:中国计划出版社,2013.Code for seismic design of electrical installation:GB 50260—2013[S].Beijing:Chinese Plan Stress,2013.
[19]DEMETRIADES G F,CONSTANTINOU M C,REINHORN A M.Study of wire rope systems for seismic protection of equipment in buildings[J].Engineering Structures,1993,15(5):321-334.
[20]NI Y Q,KO J M,WONG C W,et al.Modelling and identification of a wire-cable vibration isolator via a cyclic loading test Part 1:Experiments and model development[J].Imech E,1999,213(3):163-172.
[21]MODELLING S W.Identification of the dynamic behavior of a wire rope spring[D].Netherlands:Technische Universiteit Eindhoven,2004.
[22]PAOLACCI F,GIANNINI R.Study of the effectiveness of steel cable dampers for the seismic protection of electrical equipment[C]//Proceedings of 14th World Conference on Earthquake Engineering.[S.l]:[s.n.],2008:12-17.