July 1, 2017 Thesis Open Access

Kassu Bekele

DCAT Export

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    <dct:title>Assessment and Mitigation of Voltage Drops on Traction Lines: Case Study of Sebeta-Adama Line</dct:title>
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    <dct:description>&lt;p&gt;The transmission line in an electrified railway system must provide power transmission within&lt;br&gt; the voltage limit at safe and quality conditions. Therefore, system analysis within the traction&lt;br&gt; power system is vital to the design and operation of an electrified railway. Loads in traction&lt;br&gt; power system are often characterized by their mobility, wide range of power variations,&lt;br&gt; regeneration and service dependence. One of the main problems in the railway supply stations&lt;br&gt; are the voltage drops due to the changes of the load. Voltage drop in electrified railway have an&lt;br&gt; influence on the location of traction substation (reduces distance between traction transformer&lt;br&gt; and section post length) and operating railway transport in a such condition disturbs&lt;br&gt; transportation system, as a result the reactive power compensator should be installed to have a&lt;br&gt; better voltage at receiving end.&lt;br&gt; Ethiopian railway cooperation is constructing national railway transport from Sebeta to Meiso&lt;br&gt; with seven feeding traction substation from Sebeta to Adama. In this thesis traction network&lt;br&gt; voltage drop analysis is undertaken for various feeding condition. Taking sample section from&lt;br&gt; Sebeta substation to Indode substation analyses of the traction network voltage drop over the&lt;br&gt; feeding condition has been conducted for different loading cases. The modeling and simulation&lt;br&gt; of the system is done by MATLAB/SIMULINK software&lt;/p&gt;</dct:description>
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