高寒地区500kV输电线路导线间隔棒损坏原因分析及治理

Analysis and Treatment of Damage Causes of 500 kV Transmission Line Conductor Spacers in Alpine Area

呼伦贝尔地区多条500 kV输电线路发生了导线间隔棒金具磨损缺陷,分析认为是该地区冬季气温低、导线年平均运行应力大、没有进行差异化防风设计导致的,并提出了通过加装防振锤、减小次档距、采用新型导线间隔棒等方式进行差异化改造,提高线路抗风害水平。

Several 500 kV transmission lines in the Hulunbuir area have experienced wear defects in the line conductor spacer hardware.After analysis,it is believed that the low winter temperature,high annual average operating stress of the conductor,and lack of differentiated wind protection design in the region are the reasons for this.It is proposed to carry out differentiated transformation by installing anti-vibration hammers,reducing the sub-grade distance,and adopting new wire spacer rods to improve the level of wind damage resistance of the line.