Analysis of the Impact Response to Backup Clamp from Broken Transmission Line Tension Clamp

The power company has improved the safety of important crossover lines by installing backup clamps to the tensile wire clamps. However, it remains to be studied whether the backup clamp can withstand the impact of the wire tension when it breaks. In this paper, the finite element model of the tension clamp with backup clamp is established and verified the accuracy of the model with an actual line as the engineering background. The results show that the back-up clamp force instantaneously reaches 49501.1N at the moment of tension clamp breakage, and the effectiveness of the back-up clamp is indeed affected. Finally, the effect of the installation height on the impact coefficient is combined to give suggestions to improve the effectiveness of the backup clamp.