大型电力变压器及套管隔震体系的设计与应用
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摘要
国内外大量变压器震害资料表明,降低变压器及套管体系的加速度响应是提高变压器及套管抗震能力的关键。针对变压器及套管体系的结构特点,提出变压器隔震设计的最低目标和3种有效的变压器隔震型式与布置方案,成功研制了变压器组合隔震支座并进行力学性能试验,并提出与变压器隔震设计相对应的验算指标。最后,结合四川220 kV下孟变电站1#主变,开展变压器隔震技术的设计与应用。研究表明只要通过合理设计,变压器隔震技术可有效降低变压器及套管的地震响应,提高变压器的抗震能力。
Seismic damage data and experiences on power transformer at home and abroad indicate that reducing the acceleration response of transformer and bushings system is the key to improve the seismic capacity of the transformer and bushing.Considering the structural characteristics of transformer and bushing system,minimum targets and three effective layout program of isolation design on transformer are proposed.One combinational isolation bearings were successfully developed and the mechanical properties testing were completed.Checking targets according with isolation design are proposed.Finally,depending on No.1 main transformer of Xiameng 220 kV substations in Sichuan province of China,the design and application on seismic isolation technology for power transformer were carried out.It is concluded from above research that seismic isolation technology on transformer can effectively reduce the seismic response of transformer and bushing to improve the seismic capacity of the transformer on condition that seismic isolation design is rational.
Seismic damage data and experiences on power transformer at home and abroad indicate that reducing the acceleration response of transformer and bushings system is the key to improve the seismic capacity of the transformer and bushing.Considering the structural characteristics of transformer and bushing system,minimum targets and three effective layout program of isolation design on transformer are proposed.One combinational isolation bearings were successfully developed and the mechanical properties testing were completed.Checking targets according with isolation design are proposed.Finally,depending on No.1 main transformer of Xiameng 220 kV substations in Sichuan province of China,the design and application on seismic isolation technology for power transformer were carried out.It is concluded from above research that seismic isolation technology on transformer can effectively reduce the seismic response of transformer and bushing to improve the seismic capacity of the transformer on condition that seismic isolation design is rational.
引文
[1]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(in Chinese).
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[9]周福霖.工程结构减震控制[M].北京:地震出版社,1997:29-64.
[10]黄永林.设备隔震设计[M].北京:地震出版社,2006:1-35.
[11]IEEE Std.693—2005,IEEE recommended practice for seismic design of substations[S].
[12]Murota N,Feng M Q,Liu G Y.Earthquake simulator testing of base-isolated power transformers[J].IEEE Trans on Power Delivery,2006,21(3):1291-1299.
[13]Murota N,Feng M Q,Liu G Y.Experimental and analytical studies of base isolation systems for seismic protection of power transformers[R].Technical Report MCEER-05-0008,Sep.,2005.
[14]Saadeghvaziri M A,Feizi B,Kempner Jr L,et al.On seismic response of substation equipment and application of base isolation to transformers[J].IEEE Trans on Power Delivery,2010,25(1):177-186.
[15]刘季宇,罗俊雄.隔震供电变压器之耐震试验与系统识别[J].地震工程与工程振动,2001,21(4):109-116.Liu Jiyu,Luo Junxiong.Experiment and system identification of base-isolated electric power transformers[J].Earthquake Engineering and Engineering Viabration,2001,21(4):109-116(in Chinese).
[16]刘文光,周福霖,庄学真,等.铅芯夹层橡胶隔震垫基本力学性能研究[J].地震工程与工程振动,1999,19(1):93-99.Liu Wenguang,Zhou Fulin,Zhuang Xuezhen,et al.Research on fundamental mechanic characteristics of lead rubber bearings[J].Earthquake Engineering and Engineering Viabration,1999,19(1):93-99(in Chinese).
[2]国家电网公司科技部.四川省汶川8.0级地震电网受灾情况调研及初步分析报告[R].北京:国家电网公司科技部,2008.
[3]Yuan Yifan,Sun Botao.General introduction of engineering damage of Wenchuan Ms 8.0 earthquake[J].Journal of Earthquake Engineering and Engineering Vibration,2008,28(Supplement):74-86.
[4]周世平.5.12汶川大地震变压器损坏情况分析[J].湖北电力,2008,32(4):1-4.Zhou Shiping.Transformer damage analysis in the 5.12 Wenchuan earthquake[J].Hubei Electric Power,2008,32(4):1-4(in Chinese).
[5]甘艳,陈鹏云,王成智.地震灾害下变压器的损毁情况及对策研究[J].华中电力,2009,22(3):14-17.Gan Yan,Chen Pengyun,Wang Chengzhi.Study on the seismic effects on the transformer[J].Central China Electric Power,2009,22(3):14-17(in Chinese).
[6]曹枚根.大型电力变压器及套管体系抗震性能及隔减震技术研究[D].广州:广州大学,2011.
[7]郭振岩.变压器抗地震性能的研究[J].变压器,2005,42(8):13-31.Guo Zhenyan.Research on performances of transformer against seismic[J].Transformer,2005,42(8):13-31(in Chinese).
[8]谢强,朱瑞元,屈文俊.汶川地震中500 kV大型变压器震害机制分析[J].电网技术,2011,35(3):221-226.Xie Qiang,Zhu Ruiyuan,Qu Wenjun.Analysis on seismic failure mechanism of 500 kV high-power transformer during Wenchuan earthquake[J].Power System Technology,2011,35(3):221-226(in Chinese).
[9]周福霖.工程结构减震控制[M].北京:地震出版社,1997:29-64.
[10]黄永林.设备隔震设计[M].北京:地震出版社,2006:1-35.
[11]IEEE Std.693—2005,IEEE recommended practice for seismic design of substations[S].
[12]Murota N,Feng M Q,Liu G Y.Earthquake simulator testing of base-isolated power transformers[J].IEEE Trans on Power Delivery,2006,21(3):1291-1299.
[13]Murota N,Feng M Q,Liu G Y.Experimental and analytical studies of base isolation systems for seismic protection of power transformers[R].Technical Report MCEER-05-0008,Sep.,2005.
[14]Saadeghvaziri M A,Feizi B,Kempner Jr L,et al.On seismic response of substation equipment and application of base isolation to transformers[J].IEEE Trans on Power Delivery,2010,25(1):177-186.
[15]刘季宇,罗俊雄.隔震供电变压器之耐震试验与系统识别[J].地震工程与工程振动,2001,21(4):109-116.Liu Jiyu,Luo Junxiong.Experiment and system identification of base-isolated electric power transformers[J].Earthquake Engineering and Engineering Viabration,2001,21(4):109-116(in Chinese).
[16]刘文光,周福霖,庄学真,等.铅芯夹层橡胶隔震垫基本力学性能研究[J].地震工程与工程振动,1999,19(1):93-99.Liu Wenguang,Zhou Fulin,Zhuang Xuezhen,et al.Research on fundamental mechanic characteristics of lead rubber bearings[J].Earthquake Engineering and Engineering Viabration,1999,19(1):93-99(in Chinese).
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