电气设备的地震灾害易损性分析
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摘要
目前我国电气设备易损性分析只注重变电站设备,未对输电线进行易损性分析,影响了电力网络抗震风险分析结果的精度。文章分析了电气设备易损性分析方法和易损性曲线绘制方法,并结合四川电网在汶川地震中的设备损坏情况,应用震害统计分析方法分析了变电站主要设备和输电线路杆塔结构的易损性,确定了主要电气设备的易损性曲线。分析结果可对电气设备的抗震设计、加固和维修提供决策支持,为电力网络抗震风险评估提供基础数据,为改善电力系统抗震性能提供参考。
At present the vulnerability analysis of power equipments in China pays only attention to substation equipments and the vulnerability analysis of transmission lines is not performed,thus the accuracy of aseismatic risk analysis of power networks is affected.The vulnerability analysis method for power equipments and the plotting method of vulnerability curve are analyzed;combining with the power equipment damage of Sichuan power grid caused by the Wenchuan earthquake and applying the seismic damage statistical analysis method of statistical analysis,the vulnerability of main substation equipments and that of tower struntrue of transmission lines are analyzed to determine the vulnerability curves of main power equipments.Results of the analysis can offer decision support for aseismic design,reinforcement and maintenance of power equipments and offer basic data for aseismic risk evaluation of power networks,besides,the analysis results is available for reference to aseismic performance of power systems..
At present the vulnerability analysis of power equipments in China pays only attention to substation equipments and the vulnerability analysis of transmission lines is not performed,thus the accuracy of aseismatic risk analysis of power networks is affected.The vulnerability analysis method for power equipments and the plotting method of vulnerability curve are analyzed;combining with the power equipment damage of Sichuan power grid caused by the Wenchuan earthquake and applying the seismic damage statistical analysis method of statistical analysis,the vulnerability of main substation equipments and that of tower struntrue of transmission lines are analyzed to determine the vulnerability curves of main power equipments.Results of the analysis can offer decision support for aseismic design,reinforcement and maintenance of power equipments and offer basic data for aseismic risk evaluation of power networks,besides,the analysis results is available for reference to aseismic performance of power systems..
引文
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[2]Ang A H S,Pires J,Villaverde R,et al.Seismic probabilistic reliability assessment of electric power transmission systems[J].Reliability Engineering and System Safety,1996,51(1):7-22.
[3]Vanzi I.Seismic reliability of electric power networks:methodology and application[J].Structural Safety,1996,18(4):311-327.
[4]Liu G Y,Liu C W,Wang Y J.A study on seismic response and vulnerability of electric power system[C]//Second Proceeding of Japan-Taiwan Workshop on Lifeline Performance and Disaster Mitigation.Kobe,Japan:Japan-Taiwan Workshop,2002:176-183.
[5]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.Li guirong,Guo Endong,Zhu min.Analysis of seismic resistance behavior of electric power supply system[J].World earthquake engineering,2004,20(4):107-111(in Chinese).
[6]韩军科,朱全军,杨风利,等.基底隔震技术在高压电气设备中的应用[J].电网技术,2007,31(2):69-71.Han Junke,Zhu Quanjun,Yang Fengli,et al.Application of base isolation in high voltage electrical equipment[J].Power System Technology,2007,31(2):69-71(in Chinese).
[7]谢强,朱瑞元.汶川地震中支持式管型母线破坏机理分析[J].电力建设,2010,31(3):8-12.Xie Qiang,Zhu Ruiyuan.Seismic failure analysis of support type pipe bus in Wenchuan earthquake[J].Electric Power Construction,2010,31(3):8-12(in Chinese).
[8]柳春光,李秀菊.电力供应系统地震功能失效问题研究[J].地震工程与工程振动,2003,23(2):86-90.Liu Chunguang,Li Xiuju.Studies on seismic function failure of electrid power supply system[J].Earthquake Engineering and Engineering Vibration,2003,23(2):86-90(in Chinese).
[9]程永峰,朱全军,卢智成.变电站电力设施抗震措施研究现状与发展趋势[J]电网技术,2008,32(22):84-89.Cheng Yongfeng,Zhu Quanjun,Lu Zhicheng.Progress and development trend on seismic messures of electric power equipments in transformer substation[J].Power System Technology,2008,32(22):84-89(in Chinese).
[10]曹枚根,周福霖,徐忠根,等.大跨越输电塔线体系减震控制分析研究[J].电网技术,2007,31(14):45-51.Cao Meigen,Zhou Fulin,Xu Zhonggen,et al.Research on seismic control of large crossing transmission towers for transmission lines[J].Power System Technology,2007,31(14):45-51(in Chinese).
[11]何军,李杰.大型相关失效工程网络系统可靠度的近似算法[J].计算力学学报,2003,20(3):261-266.He jun,Li jie.Approximate method for large engineering network system with correlation failure[J].Chinese Journal of Computational Mechanics,2003,20(3):261-266(in Chinese).
[12]杨少勇,赵建国.电力系统地震灾害预防技术综述[J].电网技术,2010,34(8):57-63.Yang Shaoyong,Zhao Jianguo.An overview on prevention technology of earthquake disaster for power grids[J].Power System Technology,2010,34(8):57-63(in Chinese).
[13]丰飞.电力供应系统地震安全分析与控制[D].大连:大连理工大学,2006
[14]颜志伟.医院建筑物中非结构物之易损性曲线研究[D].台北:成功大学,2007.
[15]四川省电力公司.四川电力系统2009年度运行方式汇编[R].成都:四川省电力公司,2009.
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