175 Hits in 4.4 sec

A Novel Hybrid DC Traction Power Supply System Integrating PV and Reversible Converters

Gang Zhang, Zhongbei Tian, Huiqing Du, Zhigang Liu
2018 Energies  
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

Mihaela Popescu, Alexandru Bitoleanu
2019 Energies  
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

Shaofeng Xie, Yiming Zhang, Hui Wang
2021 Energies  
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

Qunzhan Li
2016 Journal of Modern Transportation  
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

Yu.N. Bulatov, A.V. Kryukov, A.V. Cherepanov, F.-J. Lin, N. Voropai, C.-I. Chen, K. Suslov, R. Lis, D. Sidorov, A.M. Foley, Y. Sun, P. Lombardi (+2 others)
2019 E3S Web of Conferences  
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

Hubskyi, P.V.
2018 Problemy Kolejnictwa  
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

Tian, Li, Zhou
2020 Energies  
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

Mahdiyeh Khodaparastan, Ahmed A. Mohamed, Werner Brandauer
2019 IEEE transactions on intelligent transportation systems (Print)  
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

Joao L. Afonso, Mohamed Tanta, José Gabriel Oliveira Pinto, Luis F. C. Monteiro, Luis Machado, Tiago J. C. Sousa, Vitor Monteiro
2021 Energies  
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

Shuting Li, Songrong Wu, Shiqiang Xiang, Yabo Zhang, Josep M. Guerrero, Juan C. Vasquez
2020 Energies  
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

Madhukar Waware, Pramod Agarwal
2014 International Journal of Smart Grid and Clean Energy  
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

O Bialobrzheskyi, A Gladyr, S Yakimets, A Sulym
2021 Naukovyi Visnyk Natsionalnoho Hirnychoho Universytetu  
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


V. E. Bondarenko, I. V. Domanskyi, G. N. Kostin
2017 Electrical Engineering & Electromechanics  
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

J. Dixon, L. Moran, J. Rodriguez, R. Domke
2005 Proceedings of the IEEE  
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

Jiaxin YUAN, Yongheng ZHONG, Chenmeng ZHANG, Wenjun ZENG, Baichao CHEN, Cuihua TIAN, Changhong DENG, Min ZHOU, Kazuhiro MURAMATSU, Jin WANG
2016 Journal of Modern Power Systems and Clean Energy  
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://, which permits unrestricted use, distribution  ... 
doi:10.1007/s40565-015-0179-y fatcat:d2bxgcqywfgdfee7nz5vjke6zy
« Previous Showing results 1 — 15 out of 175 results