Customized Guideline For Designing Overhead Contact System For Ethiopian Railway Case Study Of Indode Station

This thesis presents Overhead Contact Line System design for Indode station. Overhead ContactrnSystem (OCS) is an essential interface between fixed installation and moving energy consumerrnfor electric railway. Its design depends on mechanical, electrical and environmental loads.rnTherefore proper design and standard of overhead contact line system for a particularrnenvironment according to specific service requirement is necessary. In this work detailedrntechnical design of overhead contact system for Indode station as reference to review otherrnoverhead contact line system design in Ethiopia Railway is done.rnIn this thesis first overhead contact system for electrified root is modeled based on bottom to toprnapproach. Trolley and simple catenary of both semi and auto compensated Overhead ContactrnSystem is modeled. Traction impendence of overhead contact system especially double track ofrnsimple catenary equivalent impendence is determined. Then based on this model andrnmeteorological data, maximum span length, critical span length, maximum sag height, andrnmaximum anchoring length are derived and determined. From this determined parameter and siternplan of Indode station, Overhead contact system plan is prepared according to planning rules andrnstandard using Microsoft Visio. Finally main thesis work is summarized by preparing overheadrncontact system design manual for Ethiopia Railway.

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