Clamp-Conductor System Used for 63kV Overhead Power Lines: A Stress Analysis

Document Type : Original Article

Author

Department of Electrical and Computer Engineering, Babol Noshirvani University of Technology, Babol, Iran.

Abstract

A clamp-conductor system in power transmission lines serves two main functions: to withstand the conductor’s tensile forces and to ensure reliable, continuous electrical current transfer. This study investigates the mechanical and thermal performance of a typical dead-end tension clamp-Lynx conductor system. A finite element model was developed to simulate the system’s response to tensile and thermal stresses. The results indicate that the highest tensile stresses occur in the conductor’s steel core and the clamp’s steel anchor. Thermal performance was evaluated through both finite element simulation and laboratory current-injection testing. Findings show that the conductor’s surface temperature is consistently higher than that of the clamp, and both temperatures increase with rising current. The maximum difference between simulated and experimentally measured conductor surface temperatures was less than 2%, validating the accuracy of the simulation approach.

Keywords

Main Subjects

References

[1] S. Lalonde, R. Guilbault, S. Langlois, “Numerical Analysis of ACSR Conductor–Clamp Systems Undergoing Wind-Induced Cyclic Loads”,  IEEE Transactions on Power Delivery, vol. 33, no. 4, pp. 1518-1526, 2018.
[2] J. Liu, B. Yan, G. Huang, et al., “Study on mechanical characteristics of conductors with three-dimensional finite-element models”, Royal Society Open Science, vol. 7, no. 5, (200309), 2020.
[3] J. Said, S. Fouvry, G. Cailletaud, et al., “A global–local approach to predict the fretting-fatigue failure of clamped aluminum powerline conductors: From mono-contact crossed wires to full conductor vibrational tests”, Engineering Failure Analysis, vol. 146, (107073), 2023.
[4] Y. Jin, M. Quan, S. Yan, et al., “Analysis of overhead transmission lines fusing failure due to poor contact between conductors and clamps”, Engineering Failure Analysis, vol. 118, (104858), 2020.
[5] B. Burks, D.L. Armentrout, M. Kumosa, “Failure prediction analysis of an ACCC conductor subjected to thermal and mechanical stresses”, IEEE Transactions on Dielectrics and Electrical Insulation, vol. 17, no. 2, pp. 588-596, 2010.
[6] N.M. Zainuddin, M.S. Abd Rahman, M.Z.A. Ab Kadir, et al., “Review of Thermal Stress and Condition Monitoring Technologies for Overhead Transmission Lines: Issues and Challenges”, IEEE Access, vol. 8, pp. 120053-120081, 2020.
[7] S. Karimi, P. Musilek, A.M. Knight, “Dynamic thermal rating of transmission lines: A review”, Renewable and Sustainable Energy Reviews, vol. 91, pp. 600-612, 2018.
[8] L. Zhao, R. Wang, P. Dai, et al., “Influence of contamination on the axial temperature profile of ACSR conductors”, Electrical Engineering, vol. 105, pp. 733-743, 2023.
[9] J. Dadashizadeh Samakosh, F. Enayati, “Operation Recommendations for Tension Joints and Clamps on a 63 kV Overhead Transmission Line Conductor Based on Experimental Tests”, Electric Power Components and Systems, vol. 51, no. 7, pp. 639-655, 2023.
[10] X. Zhang, Z. Ying, Y. Chen, X. Chen, “A thermal model for calculating axial temperature distribution of overhead conductor under laboratory conditions”, Electric Power Systems Research, vol. 166, pp. 223-231, 2019.
[11] W. Yang, Z. Zheng, W. Huang, et al., “Thermal analysis for multi-conductor bundle in high voltage overhead transmission lines under the effect of strong wind”, Electric Power Systems Research, vol. 231, (110308), 2024.
[12] L. Beňa, V. Gáll, M. Kanálik, et al., “Calculation of the overhead transmission line conductor temperature in real operating conditions”, Electrical Engineering, vol. 103, pp. 769-780, 2021.
[13] R. Rostaminia, M. Sanei, A. Akbari, "The Effect of Power Electronic Device Pulses on Partial Discharge in Electrical Machine Insulation Using Finite Element Modeling", Journal of Electrical Engineering, University of Tabriz, Vol. 45, Issue 1, pp. 21-21.
[14] A. Darabi, A. Behniafar, H. Tahanian, H. Yousefi, "Modeling the Steady-State Performance of a Cylindrical Inverted Hysteresis Motor Using the Finite Element Method", Journal of Electrical Engineering, University of Tabriz, Vol. 47, No. 3, pp. 1001-1012, 2017.
[15] J. Dadashizadeh Samakoosh, M. Mirzaei, "Simulation and analysis of the effect of uniform and non-uniform (longitudinal and cross-sectional) contamination on the potential and electric field distribution of polymer insulators using the finite element method", Journal of Modeling in Engineering, Vol. 17, Issue 56, pp. 1-12, 2019.
[16] S. M. Seyyedbarzegar, and M. Mirzaie, "Electro‐thermal modeling of surge arrester based on adaptive power loss estimation using finite element method." International Transactions on Electrical Energy Systems, vol. 26, no. 6, pp. 1303-1317, 2016.
[17] S. M. Seyyedbarzegar, and M. Mirzaie, "Heat transfer analysis of metal oxide surge arrester under power frequency applied voltage", Energy, vol. 93, pp. 141-153, 2015.
[18] Z. Ye, K. Pang, Y. Du, et al., “Simulation Analysis of the Tensile Mechanical Properties of a Hydraulic Strain Clamp-Conductor System”, Advances in Materials Science and Engineering, (4591812), 2020.
[19] IEC-61284 Standard, “Overhead lines: requirements and tests for fittings”, 1997.
Tabriz Journal of Electrical Engineering
Volume 55, Issue 4 - Serial Number 114
December 2025
Pages 633-642

Files

Share

How to cite

Statistics