Comparative analysis of electricity for highspeed railways
DOI:
https://doi.org/10.15802/etr.v0i10.83134Keywords:
electric traction, direct current, alternating current, high speed railway, instant schemes calculation methodic, analytic functions of resistance, consuming of constant power.Abstract
The introduction of high-speed, high-speed passenger traffic and heavy freight trains due to the need to ensure the competitiveness of rail with other modes of transport. Detailed and comprehensive comparative analysis of the quality of the functioning of existing systems, electrification has not yet been fulfilled. Known transfer experience electrified sections of DC in the implementation of high-speed traffic on the variables with the expected cost-beneficial effect has not been substantiated.
The article aim is to analyze the energy consumption rates of electricity to currently existing railway electrification systems and the proposed system, the DC 24 kV, which will allow more accurate and more balanced approach to the selection system.
Studies were conducted on the basis of the calculation method of instant schemes using analytic functions of resistance, taking into account the mode of stabilization of electric rolling power consumption, and taken into account the fact that high-speed trains because of the large resistance to movement consume a maximum current regardless of the profile of almost all travel on the site.
The results of calculations indicate that the system of traction power supply 24 kV DC has the best indicators of the voltage mode in traction network and provides the lowest power loss in traction network, ceteris paribus.
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