输电线路脱冰跳跃研究进展

Review of Investigation Ice-shedding of Transmission Line

输电线脱冰跳跃可能导致短路、导线故障、硬件故障,甚至铁塔倒塌,造成供电中断,严重影响输电线路的安全运行。因此,研究输电线路的覆冰导线脱冰跳跃机理和动态响应具有重要的理论和工程意义。为了能准确掌握提高输电线路可靠性与稳定性的关键技术,从多方面总结了输电导线脱冰跳跃的研究,并探讨导线脱冰动力响应的规律。同时,导线的冰跳高度和横向摆幅也是导线动力响应的重要表征,对学者们在导线冰跳高度和横向摆幅上的研究进行分类整理。这些研究对中国技术提高和规程改进具有重要意义。

Short circuits,conductor failures,hardware failures,even tower collapses may be caused by ice-shedding of transmission lines,resulting in interruption of power supply and the safe operation of transmission lines has been seriously affected.Therefore,it has important theoretical and engineering significance to study the jumping mechanism and dynamic response of iced conductors of transmission lines.In order to accurately grasp the key technologies to improve the reliability and stability of transmission lines,the research on deicing jumps of transmission lines by researchers from various aspects were summarized,and the law of the dynamic response of deicing lines were discussed.Meanwhile,the ice jump height and lateral swing of the conductor were also important characterizations of the dynamic response of the conductor.The research on the ice jump height and lateral swing of the conductor by scholars were sorted out.Useful references are provided by the results for a theoretical basis of technical improvement and procedure improvement.