500kV单回路复合横担塔塔线体系动力响应分析
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摘要
输电线路的断线及覆冰脱落会引起电线的横向摆动和上下振动,导致电气设备的损坏,并引起整个输电系统的振荡,严重威胁着输电线路的安全性。本文基于500kV单回路三向复合横担直线塔这一设计塔型,通过有限元仿真分析,建立了500kV单回路复合横担直线塔的有限元梁杆模型及3塔4线塔线体系模型。在设定的动力工况下对输电线路的断线及覆冰脱落进行了动力计算,分析整塔及导线响应的变化情况。验证复合材料杆塔结构优化及计算结果的合理性和可靠性,并为后续工程实际应用提供参考。
The line-breaking and deicing of the composite cross-arm transmission Tower-line system would cause lateral as well as up-and-down vibration of the electric wire, which could damage the electrical equipment, cause oscillation of the entire transmission system, and seriously threaten the safety of the transmission line. Based on the design of 500 kV single circuit three-phases composite transmission tower-line system, the beam model and the 3-tower 4-line tower line system model were established by finite element simulation analysis, and the dynamic response of power line-breaking and ice detachment of the transmission line were calculated. Both the changes of whole tower and the wire response were analyzed. By the verification of structural reliability and rationality of results, references for the practical application of subsequent projects were provided.
The line-breaking and deicing of the composite cross-arm transmission Tower-line system would cause lateral as well as up-and-down vibration of the electric wire, which could damage the electrical equipment, cause oscillation of the entire transmission system, and seriously threaten the safety of the transmission line. Based on the design of 500 kV single circuit three-phases composite transmission tower-line system, the beam model and the 3-tower 4-line tower line system model were established by finite element simulation analysis, and the dynamic response of power line-breaking and ice detachment of the transmission line were calculated. Both the changes of whole tower and the wire response were analyzed. By the verification of structural reliability and rationality of results, references for the practical application of subsequent projects were provided.
引文
[1]胡超,冯衡,徐彬.750kV输电线路复合横担塔的适用性研究[J].电力勘测设计,2016(2):65-71Hu Chao, Feng Heng, Xu Bin. Research on the applicability of composite cross arm tower for 750kV transmission line[J].Electric Power Survey&Design, 2016(2):65-71
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[8]李妍,刘红军,李正良,等.输电塔线体系断线非线性动力分析[J].振动与冲击,2017, 36(7):70-79+85Li Yan, Liu Hongjun, Li Zhengliang, et al. Nonlinear dynamic analysis for transmission tower-line system subjected to wire breakage[J]. Journal of Vibration and Shock, 2017, 36(7):70-79+85
[9]GB 50545-2010 110kV-750kV架空输电线路设计规范[S].北京:中国计划出版社,2010GB50545-2010 Code for design of 110kV~750kV overhead transmission line[S]. Beijing:China Planning Press, 2010
[10]卢心龙.覆冰输电塔线体系风致脱冰和断线的动力响应研究[D].湖南大学,2016Lu Xinlong. Study on dynamic response of wind induced deicing and disconnection of ice-covered transmission line system[D].Hunan University, 2016
[11]李嘉祥,李宏男.输电线路覆冰脱落参数影响研究[J].电力建设,2016, 37(4):76-83Li Jiaxiang, Li Hongnan. Ice-Shedding Factors of Transmission Line[J]. Electric Power Construction, 2016, 37(4):76-83
[12]Q/GDW182-2008中重冰区架空输电线路设计技术规定[S].北京:国家电网公司,2008Q/GDW182-2008 Technical provisions for the design of overhead transmision line in the heavy ice area[S]. Beijing:State Grid Corporation of China, 2008
[2]左玉玺,薛更新,孙强等.750kV输电线路复合横担设计研究[J].电网与清洁能源,2013(1):1-8Zuo Yuxi, Xue Gengxin, Sun Qiang. Research on the design of composite cross arm for 750kV transmission line[J]. Power System and Clean Energy, 2013(1):1-8
[3]唐波,迟兴江,姚磊.新型绝缘输电杆塔的发展及展望[J].电力学报,2010, 25(4):325-327Tang Bo, Chi Xingjiang, Yao Lei. Development and prospect of new insulated transmission tower[J].Journal of Electric Power,2010, 25(4):325-327
[4]李庆峰,范峥,吴穹,等.全国输电线路覆冰情况调研及事故分析[J].电网技术,2008, 32(9):33-36Li Qingfeng, Fan Zheng, Wu Qiong, et al. Investigation of icecovered transmission lines and analysis on transmission line failures caused by ice-coating in China[J]. Power System Technology, 2008, 32(9):33-36
[5]刘振东,刘正士.输电线找形分析的非线性有限元法[J].新型工业化,2013(3):50-57Liu Zhendong, Liu Zhengshi. Nonlinear Finite Element Method for Form-finding Analysis of Transmission Line[J]. The Journal of New Industrialization, 2013(3):50-57
[6]王新敏.ANSYS工程结构数值分析[M].北京:人民交通出版社,2007Wang Xinmin. Numerical analysis of engineering structures[M].Beijing:China Communications Press, 2007
[7]刘红军,周佳林,赵亚新.基于断线作用的输电塔线体系动力效应影响分析[J].湖南大学学报(自然科学版),2018,45(3):62-71Liu Hongjun, Zhou Jialin, Zhao Yaxin. Analysis on dynamic effect of transmission line system based on wire breakage[J].Journal of Hunan University(Natural-Sciences). 2018, 45(3):62-71
[8]李妍,刘红军,李正良,等.输电塔线体系断线非线性动力分析[J].振动与冲击,2017, 36(7):70-79+85Li Yan, Liu Hongjun, Li Zhengliang, et al. Nonlinear dynamic analysis for transmission tower-line system subjected to wire breakage[J]. Journal of Vibration and Shock, 2017, 36(7):70-79+85
[9]GB 50545-2010 110kV-750kV架空输电线路设计规范[S].北京:中国计划出版社,2010GB50545-2010 Code for design of 110kV~750kV overhead transmission line[S]. Beijing:China Planning Press, 2010
[10]卢心龙.覆冰输电塔线体系风致脱冰和断线的动力响应研究[D].湖南大学,2016Lu Xinlong. Study on dynamic response of wind induced deicing and disconnection of ice-covered transmission line system[D].Hunan University, 2016
[11]李嘉祥,李宏男.输电线路覆冰脱落参数影响研究[J].电力建设,2016, 37(4):76-83Li Jiaxiang, Li Hongnan. Ice-Shedding Factors of Transmission Line[J]. Electric Power Construction, 2016, 37(4):76-83
[12]Q/GDW182-2008中重冰区架空输电线路设计技术规定[S].北京:国家电网公司,2008Q/GDW182-2008 Technical provisions for the design of overhead transmision line in the heavy ice area[S]. Beijing:State Grid Corporation of China, 2008