Abstract:Safe operation of power transmission lines was seriously threatened by galloping. In Hubei on January 28, 2015, severe accidents caused by galloping had made several 500kV Extreme-High-Voltage lines shut down, partial discharge and disconnection fault. In light of climatic change process, structure of transmission lines, ice formation and arrangements of anti-galloping fittings, it was the average equations of galloping of Jinlin I, II, III Circuits, Sanjiang II Circuits and Nanjing I Lines that were obtained and detail analyzed in this paper, which was based on three freedom nonlinear dynamic equations that considered curve models and arrangements of anti-galloping fittings, and would reveal nonlinear dynamic properties, such as the conditions and processes of galloping’s occurrence and development. Aimed at improving the theoretical cognitive level of galloping, and proposing to improve the power grid's ability against icing galloping, following conclusions were gave: First, this accident happened in Hubei belonged to typical Nigol galloping; Second, reasonable arrangement of anti-galloping devices could effectively improve the conductors’ ability of anti-vibration; Finally, some suggestions based on theoretical computations were gave to make the arrangements of anti-galloping fittings more reasonable.
赵彬1,程永峰1,王景朝1,刘彬1,陈予恕2. 2015年初湖北架空线路覆冰舞动灾害原因的理论分析与应对措施[J]. 振动与冲击, 2017, 36(10): 93-97.
Zhao Bin1 Cheng Yongfeng1 Wang Jingchao1 Liu Bin1 Chen Yushu2. Theoretical Analysis and Countermeasures on Galloping of Iced Overhead Transmission Lines in Hubei in Early 2015. JOURNAL OF VIBRATION AND SHOCK, 2017, 36(10): 93-97.
[1] 刘操兰,朱宽军,刘彬,等.覆冰导线舞动的动态张力研究[J].振动与冲击,2012,31(5):82-86.
Liu Chaolan, Zhu Kuanjun, Liu Bin, et al. Dynamic tension of iced conductor galloping[J]. Journal of Vibration and Shock, 2012, 31(5): 82-86.
[2] 霍涛,晏致涛,李正良,等.考虑弹性边界条件曲梁模型的覆冰输电线舞动[J].振动与冲击,2013,32(21):85-91.
Huo Tao, Yan Zhitao, Li Zhengliang, et al. Iced conductor galloping based on strong geometric nonlinear factors[J]. Journal of Vibration and Shock, 2013, 32(21): 85-91.
[3] 胡毅.输电线路运行故障的分析与防治[J].高电压技术,2007,33(3):1-8.
HU Yi. Analysis on operation faults of transmission line and countermeasures[J]. High Voltage Engineering, 2007, 33(3): 1-8.
[4] 李新民,朱宽军,李军辉.输电线路舞动分析及防治方法研究进展[J].高电压技术,2011,37(02):484-490.
LI Xinmin, ZHU Kuanjun, LI Junhui. Review on analysis and prevention measures of galloping for transmission line[J]. High Voltage Engineering, 2011, 37(2): 484-490.
[5] 吴文辉.湖南电网覆冰输电线路跳闸事故分析及措施[J].高电压技术,2006,32(2):110-111.
WU Wenhui. Causes and precaution measure for tripping trouble of transmission line covered with iced [J]. High Voltage Engineering, 2006, 32(2): 110-111.
[6] 任西春,朱宽军,刘超群.特高压输电线路新型防舞器建模分析[J].中国电机工程学报,2011,31(6):96-101.
Ren Xichun, Zhu Kuanjun, Liu Chaoqun. Modeling and Analysis of New Anti-galloping Devices on UHV Transmission Lines[J]. Proceedings of the Chinese Society for Electrical Engineering, 2011, 31(6): 96-101.
[7] GB50009-2012.建筑结构载荷规范[S].北京:中国建筑工业出版社,2012.
GB50009-2012, Load code for the design of building structures[S]. Beijing: Chian Architecture & Building Press, 2012.
[8] D. Hearnshaw. Spacer damper performance - A function of in-span positioning[C]. IEEE PES. New York, 1974.
[9] 陈予恕.非线性振动.北京:高等教育出版社,2002:53-56.
Chen Yushu. Nonlinear Vibration[M]. Beijing: Higher Eduction Press, 2002: 53-56.
[10] 樊社新,何国金,廖小平,等.合理布置分裂导线的间隔棒以减小舞动[J].华东电力,2006,34(3):8-10.
Fan Shexin, He Guojin, Liao Xiaoping, et al. Reasonably arranging spacers of bundle conductors to combat galloping[J]. East China Electric Power, 2006, 34(3): 8-10.