Influence of bird activity on the spatial electric field distribution characteristics of 10 kV through transmission lines
Year: 2025
Type: conference-paper
Abstract: In recent years, the number of birds along the 10kV transmission lines in the northwest region has gradually increased, leading to a rise in the number of transmission line faults caused by bird activities. Bird activities have become one of the factors contributing to bird-related trip faults. By constructing different working conditions of bird activities, this study simulates and analyzes the impact characteristics of the spatial electric field under different conditions within the same spatial range. A spherical air domain is established, and the electric field strength under different conditions is extracted to obtain the electric field distortion rate. By comparing the electric field distortion rates under different conditions, it is found that the number of birds is positively correlated with the spatial electric field distortion rate. Comparing the maximum electric field strength in the air domain with the breakdown field strength of air 3E6V/m, it is observed that bird activities cause spatial electric field distortion, and the maximum spatial electric field strength 4.6391E6V/m exceeds the air breakdown field strength 3E6V/m. This can lead to phase-to-phase short-circuit faults caused by birds. To mitigate the impact of bird activities on transmission lines, this study proposes the installation of insulating sleeves on bare transmission conductors. Simulation results show that after installing the insulating sleeves, the maximum spatial electric field strength 1.0663E6V/m is significantly lower than the air breakdown field strength 3E6V/m. The findings of this study provide a basis for bird protection measures on transmission lines.
Authors: Xingzhu Cao, Kang Liu, Yihu Wang, Zhenxiang Ma
Language: English
Subfield: Electrical and Electronic Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: diamond
OpenAlex ID: W4411691733