Finite element analysis of hotspot in contact fracture between ground wire and performed armor rods based on skin effect and contact resistance

Chen, Guanhao; Zhang, Hongjie; Liu, Guanke; Wu, Xun; Zhang, Zhonghao; Guo, Deming; Cheng, Peng

doi:10.1109/icpadm.2018.8401100

Cited by 2 publications

(1 citation statement)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…To improve the mechanical performance of the ground wire at the suspension clamp, aluminum pre-twisted wire wrapping is often used between the overhead ground wire and the clamp to improve the mechanical performance of the ground wire at the suspension clamp [7][8] . The contact resistance in the clamp and the power-frequency short-circuit current of the line fault will also make the Joule heating of the ground wire suspension clamp system too large [9] , causing the mechanical performance to decline and the clamp to break.…”

Section: Introductionmentioning

confidence: 99%

Design of Backup Protective Hardware for Suspension Clamp of Electric Power Overhead Ground Wire

Zheng

Yang

et al. 2022

J. Phys.: Conf. Ser.

View full text Add to dashboard Cite

Aiming at the disconnection problem of power overhead ground wire caused by wind vibration or the action of power frequency short-circuit current, the newly revised “Eighteen major anti-accident measures of State Grid Corporation China” proposes that independent double string structure should be adopted in suspension clamp of overhead ground wire. Based on this, a research scheme of backup protective hardware for the suspension clamp of the overhead ground wire of the power transmission line is proposed. In this scheme, the backup protective hardware for the suspension clamp is designed and added on the premise that the original overhead ground wire-suspension clamp structure is not changed. It provides backup measures for the original suspension clamp and reduces suspension clamp heating by an electrical shunt. Finally, the mechanical failure load test and salt spray test are performed on the designed production. The results show that the designed production meets the standard and could be used in actual engineering. At the same time, the practical engineering application shows that the backup protective hardware can effectively reinforce the ground wire suspension clamp with double strings, avoiding the problem of dropping and breaking after the original clamp is broken.

show abstract

Section: Introductionmentioning

confidence: 99%