750kV线路六分裂导线次档距振荡分析与抑制

摘要

750 kV transmission line uses six split conductor erection,the phenomenon of subspan oscillation has been found many times in operated transmission line,in order to reduce the hazard of the subspan oscillation,tries to select the damping spacer with better anti-vibration performance,and through reducing the length of subspan and optimizing the arrangement of spacer to decrease the oscillation energy of the conductor and increase the absorbing energy of the spacer,restrict the subspan oscillation in the safe scope,thereby eliminates the hidden trouble of the line safety caused by the subspan oscillation,it is significant to ensure for 750 kV transmission line safe,healthy and steady operation.%750 kV输电线路采用＂六分裂＂导线架设,在已投运的线路中多次发现存有导线次档距振荡现象。鉴于当前无法对线路进行大范围的改造,为了减少次档距振荡危害,选用防振性能较好的阻尼间隔棒,采取减小次档距长度及优化间隔棒布置等措施,以减小导线振荡能量,增加间隔棒吸收能量,将次档距振荡抑制在安全限度内,从而消除因次档距振荡而构成的线路安全隐患。