ENERGY EFFICIENCY OF THE SUBWAY ELECTRICAL SUPPLY SYSTEM WITH ELECTRICAL ENERGY RECOVERY AT BRAKING
Keywords:power supply system, energy, energy return coefficient, efficiency, energy recovery
AbstractPurpose. The purpose of the paper is to assess the efficiency of the subway power supply system, which uses a four-quadrant DC drive with energy recovery in the supply network in the braking mode. Methodology. We have applied the theory of electrical circuits and mathematical simulation in Matlab package. Results. The theoretical dependence of the efficiency of the electrical supply system with a bidirectional flow of energy on the coefficient of resistive short circuit at the load terminals has been obtained. The theoretical result is verified by modeling. Originality. The equivalent circuit of the subway power supply system with a four-quadrant DC drive and the possibility of energy recovery to the supply network in braking mode is developed, its parameters are determined, and the schedule of the electric train movement was set. Practical value. The use of the obtained dependencies and simulation results will allow to determine the direction of the future development of the subway power supply system and optimize its energy efficiency.
Zhemerov G.G., Ilyina N.A., Tugay D.V., Kholod O.I. Subway power systems with modern semiconductor converters and energy storage devices. Electrical engineering & electromechanics, 2013, no.1, pp. 41-49. (Rus) doi: 10.20998/2074-272X.2013.1.10.
Zhemerov G.G., Tugay D.V., Kholod O.I. Energy efficiency of power supple systems for a subway. Technical electrodynamics, 2014, no.1, pp. 67-74. (Rus).
Zhemerov G.G., Ilina N.A., Mashura A.V., Tugay D.V. Efficiency of regenerative braking in energy supply systems with electric regulated drives. Technical electrodynamics, 2018, no.8, pp. 73-76. (Ukr). doi: 10.15407/techned2018.06.073.
Electric carriage types 81-718/719, 81-718.0/719.0 and 81-718.2/719.2. Available at: http://vagon.metro.ru/passenger/81-718.html (Accessed 12 May 2016). (Rus).
Kostin N.A., Nikitenko A.V. Autonomy of recuperative braking – the basis of reliable energy-efficient recovery on the electromotive force constant current. Railway Transport of Ukraine, 2014, no.3, pp. 15-23. (Rus).
Shcherbak Ya.V., Nerubatsky V.P. Analysis of the use of recuperative inhibition on the railways of Ukraine. Railway Transport of Ukraine, 2011, no.2, pp. 30-34. (Ukr).
Sablin O.I. Analysis of the quality of the recovered electricity in the electric transport system. Bulletin of NTU «KhPI», 2013, no.38, pp. 187-190. (Rus).
Posokhov I.M. Research of the car-building market of Ukraineand competitiveness of the industrial enterprises of railway transport in the world market and CIS markets. Bulletin of NTU «KhPI», 2015, no.60, pp. 115-118. (Ukr).
How to Cite
Copyright (c) 2019 George G. Zhemerov, D. S. Krylov, A. V. Mashura
This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.
Authors who publish with this journal agree to the following terms:
1. Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
2. Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
3. Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work.