Revolutionary Design and Optimization of Railway Electrification Overhead Equipment in High-Altitude Tunnels: A Case Study of the Magnificent T-80 Tunnel

Manish Kumar, PMP, IEng; Jay Bardhan

doi:10.36948/ijfmr.2024.v06i03.18106

Revolutionary Design and Optimization of Railway Electrification Overhead Equipment in High-Altitude Tunnels: A Case Study of the Magnificent T-80 Tunnel

Author(s)	Manish Kumar, PMP, IEng, Jay Bardhan
Country	India
Abstract	Railway electrification systems are critical for modernizing railway infrastructure, enhancing efficiency, and reducing environmental impact to obtain zero emissions targets. In high-altitude regions, such as mountainous terrains, unique challenges arise due to extreme weather conditions, terrain complexities, and operational requirements. This case study focuses on the innovative and optimized design of overhead equipment (OHE) for railway electrification in high-altitude tunnels, presenting a comprehensive analysis of the planning, design, and implementation process for 25kV AC Overhead equipment. The study begins with an overview of significant considerations in designing 25kV AC OHE systems for high-altitude tunnels, including altitude effects on electrical performance, weather effects, structural safety checks, fire scenarios, vibration effects, and tunnel bolt drilling for OHE equipment installation. It also covers aspects such as the selection of auto tensioning devices, electrical clearances, and earthing & bonding according to railway/EN/IEC standards. Also, the paper examines the monetary feasibility and environmental sustainability of the proposed OHE design, emphasizing the importance of life-cycle cost analysis and environmental impact valuation. It underscores the significance of adopting a holistic approach that balances technical requirements, operational efficiency, and environmental stewardship in railway electrification projects.
Keywords	25 kV AC OHE/OCS, Tunnel, Anti-creep, Cantilever, High-altitude, Bonding & Earthing, Fire scenarios, Vibration, ATD (Auto Tensioning Devices), Span Length, Sag, Versine, Tunnel earth wire (TEW), Railway Electrification.
Field	Engineering
Published In	Volume 6, Issue 3, May-June 2024
Published On	2024-05-07
Cite This	Revolutionary Design and Optimization of Railway Electrification Overhead Equipment in High-Altitude Tunnels: A Case Study of the Magnificent T-80 Tunnel - Manish Kumar, PMP, IEng, Jay Bardhan - IJFMR Volume 6, Issue 3, May-June 2024. DOI 10.36948/ijfmr.2024.v06i03.18106
DOI	https://doi.org/10.36948/ijfmr.2024.v06i03.18106
Short DOI	https://doi.org/gttbjw

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Revolutionary Design and Optimization of Railway Electrification Overhead Equipment in High-Altitude Tunnels: A Case Study of the Magnificent T-80 Tunnel

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