.png){kind=icon}
.png){kind=icon}
Return
Failure analysis of UHV transmission lines under joint wind and ice hazards in plateau regions
.png){kind=icon}
PRE
AI
Z
X
H
D
H
DOI：10.1016/j.jweia.2026.106579.png)
.png){kind=icon}
Original request for help.png){kind=icon}
Share.png){kind=icon}
Save
Abstract
En 中文
Ultra-high-voltage (UHV) transmission lines are essential for long-distance, cross-regional power delivery. However, they frequently traverse plateau regions where recurrent wind-ice hazards threaten operational safety. To address this challenge, this study proposes a failure analysis framework for transmission lines subjected to joint wind and ice hazards. Within this framework, an existing icing model is refined to require only conventional meteorological data and is validated against field observations. Long-term ice thickness series are generated using the refined model, and a copula-based method is employed to characterize the joint probability distribution of wind speed and ice thickness. The resulting joint wind-ice hazard model is combined with fragility functions developed for towers, conductors, and ground wires to quantify failure probabilities. The results show that the refined icing model effectively reproduces the duration and general evolution of icing events, although some discrepancies remain in ice thickness estimates. The copula-based joint probability model provides a satisfactory fit to the paired wind and ice samples. Under normal icing conditions, conductors exhibit the highest failure probability, followed by ground wires, while transmission towers show the lowest failure probability. The proposed framework elucidates the failure mechanisms of transmission lines subjected to wind-ice interactions and provides a practical basis for engineering assessment in regions lacking long-term monitoring data.
Keywords:
UHV transmission lines
Wind and ice hazards
Fragility analysis
Failure analysis
Journal
IF:
4.9
Papers:
5.1K
Citations:
2.2W
Organization
Cited Papers