特高压支架-设备体系动力响应简化分析及参数研究
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摘要
提出特高压支架-设备耦合体系动力分析的简化模型并据此针对体系动力特性及地震响应开展研究。首先分析支架-设备耦合体系的结构特点,提出考虑分布参数的体系2E-4D简化模型,推导了基于该模型的体系自振频率和地震响应计算公式。然后,针对2种典型电气设备,对比分析了6组不同支架-设备耦合体系数值仿真和简化模型分析所得计算结果,验证了简化模型的准确性。最后,利用简化模型考察了不同特征参数(如刚度比、高度比等)对体系动力特性及响应的影响,并得到支架对设备加速度动力放大系数的取值规律。研究结果对《电力设施抗震设计规范》中有关支架对电气设备动力响应影响相关规定的修订具有参考价值。
A simplified model is proposed for the dynamic analysis of Ultra High Voltage(UHV) electrical support-equipment coupled system, based on which the dynamic properties and seismic responses of the system are investigated. Firstly, the structural characteristics of the coupled system are analyzed, and a 2E-4D model considering distributed parameters is proposed to simplify the system. A theoretical derivation is included to calculate the natural frequencies and seismic responses of the simplified model. Secondly, by analyzing two kinds of representative electrical equipment, the results obtained from the 2E-4D model are compared with the numerical simulation results for 6 different support-equipment sets, which have verified the accuracy of the simplified model. Lastly, the proposed model is adopted for parametric analysis of a large number of support-equipment systems to investigate the influence of different characteristic parameters(e.g. stiffness ratio and height ratio etc.) on the system dynamic properties and seismic responses, and the value range of dynamic amplification factor(DAF) is determined for different supporters. This research is expected to provide reference to update Chinese codes and specifications accounting for the effect of support structures on the dynamic behavior of electrical equipment.
A simplified model is proposed for the dynamic analysis of Ultra High Voltage(UHV) electrical support-equipment coupled system, based on which the dynamic properties and seismic responses of the system are investigated. Firstly, the structural characteristics of the coupled system are analyzed, and a 2E-4D model considering distributed parameters is proposed to simplify the system. A theoretical derivation is included to calculate the natural frequencies and seismic responses of the simplified model. Secondly, by analyzing two kinds of representative electrical equipment, the results obtained from the 2E-4D model are compared with the numerical simulation results for 6 different support-equipment sets, which have verified the accuracy of the simplified model. Lastly, the proposed model is adopted for parametric analysis of a large number of support-equipment systems to investigate the influence of different characteristic parameters(e.g. stiffness ratio and height ratio etc.) on the system dynamic properties and seismic responses, and the value range of dynamic amplification factor(DAF) is determined for different supporters. This research is expected to provide reference to update Chinese codes and specifications accounting for the effect of support structures on the dynamic behavior of electrical equipment.
引文
[1]李杰.生命线工程抗震-基础理论与应用[M].北京:科学出版社,2005:160―166.Li Jie.Lifeline earthquake engineering-basic theory and application[M].Beijing:Science Press,2005:160―166.(in Chinese)
[2]刘建秋,王亚超,韩文庆.变电站震害分析与抗震措施的研究综述[J].电力建设,2011,32(7):44―50.Liu Jianqiu,Wang Yachao,Han Wenqing.Review on seismic disaster analysis and aseismatic measures of transformer substation[J].Electric Power Construction,2011,32(7):44―50.(in Chinese)
[3]GB50260-96,电力设施抗震设计规范[S].北京:中国计划出版社,1996.GB50260-96,Code for design of seismic of electrical installations[S].Beijing:China Planning Press,1996.(in Chinese)
[4]Jean-Bernard Dastous,Andre Filiatrault,Jean-Robert Pierre.Estimation of displacement at interconnection points of substation equipment subjected to earthquakes[J].IEEE Transactions on Power Delivery,2004,19(2):618―628.
[5]Whittaker Andrew S,Fenves Gregory L,Gilani Amir S J.Seismic evaluation and analysis of high-voltage substation disconnect switches[J].Engineering Structures,2007,29(12):3538―3549.
[6]Mohammadi R K,Akrami V,Nikfar F.Dynamic properties of substation support structures[J].Journal of Constructional Steel Research,2012,78:173―182.
[7]杨亚弟,张其浩.具有柔性结点的有限元法及其应用[J].工程力学,1988,5(3):83―90.Yang Yadi,Zhang Qihao.The FEM with flexible nodel point and its application[J].Engineering Mechanics,1988,5(3):83―90.(in Chinese)
[8]杜永峰,刘彦辉,李慧.高压电气设备支架串联体系地震响应半解析法[J].计算力学学报,2010,27(2):225―231.Du Yongfeng,Liu Yanhui,Li Hui.Response of serial system of equipment and supporter under earthquake based on semi-analytical method[J].Chinese Journal of Computational Mechanics,2010,27(2):225―231.(in Chinese)
[9]李晓玉,陈淮,李天.高压电气设备动态特性分析[J].郑州工业大学学报,1999,20(2):61―63,102.Li Xiaoyu,Chen Huai,Li Tian.Study on natural frequencies of high-voltage electrical equipment[J].Journal of Zhengzhou University of Technology,1999,20(2):61―63,102.(in Chinese)
[10]于金光,郝际平,解琦,等.美日中高压电气设备地震动力反应放大系数比较研究[J].土木工程学报,2010,43(增刊):77―80.Yu Jinguang,Hao Jiping,Xie Qi,et al.Comparative study on dynamic response magnification factors for high-voltage electric equipment between American Japanese and Chinese[J].Journal of Civil Engineering,2010,43(Suppl):77―80.(in Chinese)
[11]曹枚根,周福霖,谭平,等.地震作用下断路器动力时程分析及阻尼效应研究[J].高压电器,2010,46(7):27―35.Cao Meigen,Zhou Fulin,Tan Ping,et al.Analysis on dynamic time-history of circuit breaker and damping ratio effect under earthquake[J].High Voltage Apparatus,2010,46(7):27―35.(in Chinese)
[12]Bhuyan G S,Zhai E,Ghalibafian H,et al.Seismic behavior of flexible conductors connecting substation equipment—Part I:static and dynamic properties of individual components[J].IEEE Transactions on Power Delivery,2004,19(2):618―628.
[13]克拉夫R,彭津J.结构动力学[M].第二版(修订版).王光远,等,译.北京:高等教育出版社,2006:99―214.Clough R,Penzien J.Dynamics of Structures[M].2nd Edition(revised edition).Translated by Wang Guangyuan,et al.Beijing:Higher Education Press,2006:99―214.(in Chinese)
[14]Chopra A K.结构动力学,理论及其在地震工程中的应用[M].第2版.谢礼立,吕大刚,等,译.北京:高等教育出版社,2007:223―331.Chopra A K.Dynamics of structures:theory and applications to earthquake engineering[M].2nd ed.Translated by Xie Lili,LüDagang,et al.Beijing:Higher Education Press,2007:223―331.(in Chinese)
[15]IEEE 693-2005,IEEE recommended practice for seismic design of substations[S].Institute of Electrical and Electronics Engineers,Inc,2005.
[2]刘建秋,王亚超,韩文庆.变电站震害分析与抗震措施的研究综述[J].电力建设,2011,32(7):44―50.Liu Jianqiu,Wang Yachao,Han Wenqing.Review on seismic disaster analysis and aseismatic measures of transformer substation[J].Electric Power Construction,2011,32(7):44―50.(in Chinese)
[3]GB50260-96,电力设施抗震设计规范[S].北京:中国计划出版社,1996.GB50260-96,Code for design of seismic of electrical installations[S].Beijing:China Planning Press,1996.(in Chinese)
[4]Jean-Bernard Dastous,Andre Filiatrault,Jean-Robert Pierre.Estimation of displacement at interconnection points of substation equipment subjected to earthquakes[J].IEEE Transactions on Power Delivery,2004,19(2):618―628.
[5]Whittaker Andrew S,Fenves Gregory L,Gilani Amir S J.Seismic evaluation and analysis of high-voltage substation disconnect switches[J].Engineering Structures,2007,29(12):3538―3549.
[6]Mohammadi R K,Akrami V,Nikfar F.Dynamic properties of substation support structures[J].Journal of Constructional Steel Research,2012,78:173―182.
[7]杨亚弟,张其浩.具有柔性结点的有限元法及其应用[J].工程力学,1988,5(3):83―90.Yang Yadi,Zhang Qihao.The FEM with flexible nodel point and its application[J].Engineering Mechanics,1988,5(3):83―90.(in Chinese)
[8]杜永峰,刘彦辉,李慧.高压电气设备支架串联体系地震响应半解析法[J].计算力学学报,2010,27(2):225―231.Du Yongfeng,Liu Yanhui,Li Hui.Response of serial system of equipment and supporter under earthquake based on semi-analytical method[J].Chinese Journal of Computational Mechanics,2010,27(2):225―231.(in Chinese)
[9]李晓玉,陈淮,李天.高压电气设备动态特性分析[J].郑州工业大学学报,1999,20(2):61―63,102.Li Xiaoyu,Chen Huai,Li Tian.Study on natural frequencies of high-voltage electrical equipment[J].Journal of Zhengzhou University of Technology,1999,20(2):61―63,102.(in Chinese)
[10]于金光,郝际平,解琦,等.美日中高压电气设备地震动力反应放大系数比较研究[J].土木工程学报,2010,43(增刊):77―80.Yu Jinguang,Hao Jiping,Xie Qi,et al.Comparative study on dynamic response magnification factors for high-voltage electric equipment between American Japanese and Chinese[J].Journal of Civil Engineering,2010,43(Suppl):77―80.(in Chinese)
[11]曹枚根,周福霖,谭平,等.地震作用下断路器动力时程分析及阻尼效应研究[J].高压电器,2010,46(7):27―35.Cao Meigen,Zhou Fulin,Tan Ping,et al.Analysis on dynamic time-history of circuit breaker and damping ratio effect under earthquake[J].High Voltage Apparatus,2010,46(7):27―35.(in Chinese)
[12]Bhuyan G S,Zhai E,Ghalibafian H,et al.Seismic behavior of flexible conductors connecting substation equipment—Part I:static and dynamic properties of individual components[J].IEEE Transactions on Power Delivery,2004,19(2):618―628.
[13]克拉夫R,彭津J.结构动力学[M].第二版(修订版).王光远,等,译.北京:高等教育出版社,2006:99―214.Clough R,Penzien J.Dynamics of Structures[M].2nd Edition(revised edition).Translated by Wang Guangyuan,et al.Beijing:Higher Education Press,2006:99―214.(in Chinese)
[14]Chopra A K.结构动力学,理论及其在地震工程中的应用[M].第2版.谢礼立,吕大刚,等,译.北京:高等教育出版社,2007:223―331.Chopra A K.Dynamics of structures:theory and applications to earthquake engineering[M].2nd ed.Translated by Xie Lili,LüDagang,et al.Beijing:Higher Education Press,2007:223―331.(in Chinese)
[15]IEEE 693-2005,IEEE recommended practice for seismic design of substations[S].Institute of Electrical and Electronics Engineers,Inc,2005.
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