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A Novel Hybrid DC Traction Power Supply System Integrating PV and Reversible Converters
2018
Energies
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In this paper, a novel hybrid DC traction power supply system integrating both PV and reversible converter is proposed. ...
It should be a good idea to introduce both the PV system and reversible Energies 2018, 11, 1661 3 of 24 converter into the urban DC traction power supply system, making up HTPSS. ...
Curves of reversible converter with reactive power compensation. ...
doi:10.3390/en11071661
fatcat:ks53kbuuibaftij2ijsrsv44su
A Review of the Energy Efficiency Improvement in DC Railway Systems
2019
Energies
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Then, the achievements in transforming the existing DC-traction substations in reversible substations with capabilities of power quality improvement are systematically reviewed by illustrating the main ...
the classic DC-traction substations. ...
Author Contributions: The two authors actively participated in the conception and writing of the review paper. Funding: This research received no external funding. ...
doi:10.3390/en12061092
fatcat:4na7ps6xmve3llwzd2src3llqm
A Novel Co-Phase Power Supply System for Electrified Railway Based on V Type Connection Traction Transformer
2021
Energies
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Neutral section is no longer set with traction substation, and the train is continuously powered through. ...
At present, a V type connection traction transformer is widely used in a power frequency single-phase AC traction power supply system, especially in high-speed railway. ...
AC-DC-AC converter in the traction substation. ...
doi:10.3390/en14041214
fatcat:5x4oroqtevcpjjbmxq2bbh2h7q
Industrial frequency single-phase AC traction power supply system for urban rail transit and its key technologies
2016
Journal of Modern Transportation
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To avoid stray current and maintain the benefit of no phase-split in the DC traction power supply system, an AC traction power supply system was proposed for the urban public transport such as metro and ...
The proposed system consists of a main substation (MSS) and cable traction network (CTN). ...
comparing with the existing DC traction power supply system (DC system, in short). ...
doi:10.1007/s40534-016-0097-3
fatcat:yf6btxcssnevxazbhbvo2vo7wi
Power quality in high voltage mains supplying mainline railroads' traction substations
2019
E3S Web of Conferences
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To enhance power quality in mains supplying traction substations, smart grid technologies can be used together with multiagent control systems. ...
in this case, in points with lower levels of short circuit power, power quality factors exceed by far the permissible levels. ...
To enhance power quality in mains supplying traction substations, smart grid technologies can be used together with multiagent control systems. ...
doi:10.1051/e3sconf/201911404001
fatcat:4zmu4sjm4ng6jodqpbcyoe5hd4
Reserves for Improving the Energy Efficiency of Traction Power Systems
2018
Problemy Kolejnictwa
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Some methods of improving effi ciency in the railway transport industry are considered. ...
In the article, trends in the electric power industry were analyzed, namely, constant growth in energy resources and the need to improve energy effi ciency, the introduction of energy saving measures. ...
Compensation of reactive power Th e compensation of reactive power in traction power systems is used to reduce electricity losses, improve the voltage regime and reduce the charge for the fl ow of reactive ...
doi:10.36137/1781e
fatcat:s4s4rdw4wfajrheki3tbi3fgdu
Novel Uninterruptible Phase-Separation Passing and Power Quality Compensation Scheme Based on Modular Multilevel Converter for Double-Track Electrified Railway
2020
Energies
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In order to solve these problems, this paper proposes a novel uninterruptible power supply phase separation passing and power quality compensation (UPSP-PQC) scheme for double-track electrified railway ...
systems. ...
Differences of RMS values and phases of voltages in various public power system substations will exist, and circulating current among traction substations and public power system will arise if all phase ...
doi:10.3390/en13030738
fatcat:ld67emkaxvg5jh5vgh43pwajeq
Recuperation of Regenerative Braking Energy in Electric Rail Transit Systems
2019
IEEE transactions on intelligent transportation systems (Print)
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2018 pre-print arXiv:1808.05938v1 fatcat:vlmzcplyyjbw3lsnanvvq3jkjq
Electric rail transit systems are large consumers of energy. In trains with regenerative braking capability, a fraction of the energy used to power a train is regenerated during braking. ...
These technologies include: train timetable optimization, energy storage systems (onboard and wayside), and reversible substations. ...
SYSTEM INTEGRATION Electric rail transit systems consist of a network of rails, supplied by geographically distributed power supply substations. ...
doi:10.1109/tits.2018.2886809
fatcat:yxp3wcs55naopknivm7gwt3ecu
A Review on Power Electronics Technologies for Power Quality Improvement
2021
Energies
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production from renewables, the contextualization with solid-state transformers, electric mobility and electrical railway systems, a review of power electronics solutions to compensate the main power ...
renewable energies, electric mobility and energy storage systems, which adds importance to power quality issues. ...
However, if the traction substation is equipped with a STATCOM device, which is capable of completely compensating all the reactive power of the traction substation and balancing the three-phase currents ...
doi:10.3390/en14248585
fatcat:xg6zq7sma5cdvbbs3nugpwgumm
Research on Synchronverter-Based Regenerative Braking Energy Feedback System of Urban Rail Transit
2020
Energies
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Using this synchronverter-based approach, the system supplies traction power to the traction network when the train accelerates and gives the RBE back to the AC grid when the train brakes, in light of ...
Moreover, the system can be self-synchronized with the AC grid and make corresponding power management on the basis of changes in the voltage amplitude as well as the frequency of the grid. ...
In addition, we would like to thank the three prestigious reviewers for their valuable comments that improved the quality of this paper. ...
doi:10.3390/en13174418
fatcat:fkrlguvvx5e6rkzec26vitvuyq
Power quality survey and harmonic compensation in high power system
2014
International Journal of Smart Grid and Clean Energy
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A power quality survey is carried out in the industry, where high power AC drive is used. A survey at substation is also conducted to know the harmonic level present at the distribution level. ...
Simulated results prove the effective elimination of harmonics with multilevel inverter in high voltage power system without use of transformer. ...
Power quality at substation and distribution lines A survey of voltage and current harmonics present in the distribution system at Battery Charging Room at 110/33KV Substation Vishrambag, Sangli, Maharashtra ...
doi:10.12720/sgce.3.3.291-298
fatcat:uj5ugzmkffcohcti3gjjte352e
Need of technical accounting at electric energy quality reduction under conditions of AC traction substation
2021
Naukovyi Visnyk Natsionalnoho Hirnychoho Universytetu
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reactive power, were established. ...
quality indicator in accordance with current standards, remains within the permissible range. ...
traction power systems, but also an indispensable method for utilities in terms of accu rate assessment of the quality of electricity from railway systems. ...
doi:10.33271/nvngu/2021-3/075
fatcat:wl55nbjw2zfqnmhrgp4m2atpwi
ANALYSIS OF ENERGY EFFICIENCY OF OPERATING MODES OF ELECTRICAL SYSTEMS WITH THE TRACTION LOADS
2017
Electrical Engineering & Electromechanics
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For effective application of reactive power compensation devices in the AC traction power supply systems it is proposed to develop regulatory documentation on necessity of application and the order of ...
choice of parameters and placement of compensation systems taking into account operation mode of power systems and the use of software systems with imitation of instantaneous interrelated schemes of transport ...
To ensure the compensation (decompensation) of reactive power and filtering of higher harmonic components of voltage and current general scheme applies dynamic compensation, in which the converter COMPACT ...
doi:10.20998/2074-272x.2017.1.09
fatcat:w4l3ojoqgreyfofoghrotz5q5e
Reactive Power Compensation Technologies: State-of-the-Art Review
2005
Proceedings of the IEEE
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Static Var generators are used to improve voltage regulation, stability, and power factor in ac transmission and distribution systems. ...
This paper presents an overview of the state of the art in reactive power compensation technologies. ...
REACTIVE POWER COMPENSATION PRINCIPLES In a linear circuit, the reactive power is defined as the ac component of the instantaneous power, with a frequency equal to 100/120 Hz in a 50-or 60-Hz system. ...
doi:10.1109/jproc.2005.859937
fatcat:jk5uumf74fej7lxs6wsag3dcqm
Optimal electromagnetic hybrid negative current compensation method for high-speed railway power supply system
2016
Journal of Modern Power Systems and Clean Energy
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Compared with traditional compensation methods, the EHCS makes full use of the SVC's advantages of economy and reliability and of RPC's advantages of technical capability and flexibility. ...
The EHCS is made up of a small-capacity railway static power conditioner (RPC) and a large-capacity magnetic static var compensator (MSVC). ...
Open Access This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http:// creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution ...
doi:10.1007/s40565-015-0179-y
fatcat:d2bxgcqywfgdfee7nz5vjke6zy
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