Increasing Power Supply Efficiency for “Two Wire-Rail” Line Consumers
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Date
2020
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
Instytut Kolejnictwa, Warszawa
Abstract
EN: The article is devoted to the problem of non-traction consumers power supply of AC railways. Th e low efficiency of energy transfer is caused by the design of a non-traction power supply line. Th e absence of bilateral power is typical for non-traction network 27,5 kV which consist of “two wire-rail” lines. This line is outdated technology, which does not correspond to modern requirements on the power quality, but used on AC railways with three-phase traction transformers. The purpose of the article is to investigate the methods of power supply improvements for non-traction consumers in terms of voltage unbalance, harmonic distortions and energy losses. Connection of the phasing device to delta winding traction transformer for bilateral supplying non-traction customers from network 27,5 kV is suggested in the article. The implementation of a method to increase the efficiency of electricity transmission in the non-traction network power supply allows to reduce power losses from 720 MWh / year to 441 MWh / year, the voltage unbalance from 1,9% to 1,3% and the total harmonic distortion from 8 % to 6 % respectively. Additionally, investment attractiveness of the decision was evaluated.
Description
D. Bosyi: ORCID 0000-0003-1818-2490, D. Zemskyi: ORCID 0000-0003-4322-0727
Keywords
non-traction customers, two wire-rail line, phase coordinates, AC railway, power quality, КІСЕ
Citation
Bosyi D., Zemskyi D. Increasing Power Supply Efficiency for “Two WireRail” Line Consumers. Problemy Kolejnictwa. 2020. Iss. 188. P. 93–102. DOI: 10.36137/1881E.