Analysis and suppression on the subspan oscillation of six split conductor for 750 kV transmission line

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.