相间间隔棒对输电线路脱冰跳跃动态响应的抑制效应及布置优化研究

Research on the Suppression Effect and Layout Optimization of Inter-Phase Spacers on the Dynamic Response of Transmission Lines During Ice Shedding Jumping

中文关键词:输电线路  覆冰  脱冰跳跃  相间间隔棒  脱冰抑制

keywords:transmission line  icing  ice-shedding jump  interphase spacer rods  de-icing inhibition

中文摘要:为了深入评估相间间隔棒对输电线路脱冰跳跃动态响应的抑制效果，以某220 kV覆冰输电线路为研究对象，采用有限元建模与数值模拟相结合的方法，系统分析了输电线路脱冰跳跃动态响应。从导线覆冰荷载的突变过程入手，模拟了脱冰瞬时导线的振动响应，重点探讨了相间间隔棒在不同布置方式下对跳跃响应的影响规律。实验结果表明，合理设置间隔棒位置和数量可有效降低导线跳跃幅度，显著提升线路的机械稳定性与运行安全性。分析表明，将间隔棒布置在脱冰区段导线的中点位置，可显著抑制跳跃高度，而采用多根间隔棒的配置相比单根布置，能更有效地缓解导线剧烈振动。优化间隔棒的布置方案不仅有助于降低因脱冰跳跃引发的电气短路和机械损伤风险，也为覆冰地区输电线路的结构设计与运行维护提供了理论依据和工程参考。

Abstract:To comprehensively evaluate the suppression effect of inter-phase spacers on the dynamic response of transmission lines during ice shedding jumping，this study takes a 220 kV iced transmission line as the research object and adopts a combined method of finite element modeling and numerical simulation. The analysis starts with the abrupt change in the conductor load caused by ice shedding，and simulates the transient vibration response of the conductors induced thereby. Special emphasis is placed on investigating the influence of different inter-phase spacer layout modes on the ice shedding jumping behavior. The results show that the reasonable arrangement of spacer positions and quantities can effectively reduce the jumping amplitude of conductors，thus significantly improving the mechanical stability and operational safety of the transmission line. Further analysis shows that placing the spacers at the midpoint of the ice shedding segment is particularly effective in suppressing the jumping height，while using multiple spacers can mitigate severe conductor vibrations more effectively than using a single one. This study shows that optimizing the spacer layout scheme can significantly reduce the electrical and mechanical risks caused by ice shedding jumping，thus providing theoretical guidance and engineering references for the structural design and operation maintenance of transmission lines in icing-prone areas.