Abstract
The power supply systems of railway transport can be considered as a combination of different processes, combined solution for continuous supplying of electricity with appropriate quality to electric rolling stock. In addition power supply systems should provide a cost-effective supplying of energy and the rational level of losses that occure during the process of transmission and transformation. The problem of energy saving in traction power supply systems is a complex, multi-level and multi-factor. The author proposed two-step approach for selecting the energy saving measures on the basis of several criteria, in accordance with the hierarchy of the goals. At a first phase, the experts form a set of energy-saving measures using proposed by the author the invariant-agreed method of hierarchy analysis. At a second phase it's formed a final set of energy saving measures using a proposed graph model. In accordance with the proposed methodology it's made a selection of energy saving measures for Donetskaya railway. The resulting economic effect is about 3 mln. grn.
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