Railway Electrical Smart Grids: An introduction to next-generation railway power systems and their operation

Fuente, Eduardo Pilo De La; Mazumder, Sudip K.; Franco, Ignacio González

doi:10.1109/mele.2014.2338411

Cited by 67 publications

(27 citation statements)

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“…In the past decade, some pioneering work has been carried out to verify the feasibility of integrating renewable energy source (RES) and energy storage system (ESS) into ERS. The European Union initiated the MERLIN project [4] to achieve a more sustainable and optimised energy usage in European electric mainline railway system in 2012. Japanese researchers demonstrated the potential of using photovoltaic (PV) panels on platform roofs and railway premises to introduce the solar power into the ERS in 2013 [7].…”

Section: Voltage Control For MMC Based Railway Power Supply Integrmentioning

confidence: 99%

“…Therefore researchers have consid-ered the next generation of ERS to be a smart railway system, where information and communication technologies are used to improve the overall controllability. Eduardo et al discussed key features in a smart railway system, including 'smart train operation', 'smart operation of railway power supply', and 'smart interaction with other power systems' [4].…”

Section: Voltage Control For MMC Based Railway Power Supply Integrmentioning

confidence: 99%

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DC voltage control for MMC‐based railway power supply integrated with renewable generation

Sun

et al. 2020

IET Renewable Power Generation

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Capacitor voltage of the ith submodule of MMC u ref jcir MMC phase j circulating current control reference,j = a, b, c u jcom Common mode voltage of MMC phase j, j = a, b, c, e, f u jdif Differential mode voltage of MMC phase j, j = a, b, c, e, f u jl Voltage of all inserted submodules in MMC phase j lower branches, j = a, b, c, e, f u ref josc Traction side converter oscillation current suppression control reference in MMC phase j, j = e, f u ju Voltage of all inserted submodules in MMC phase j upper branches, j = a, b, c, e, f V dc Nominal MMC dc link voltage v M d The d axis generator terminal voltage v M q The q axis generator terminal voltage

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Section: Voltage Control For MMC Based Railway Power Supply Integrmentioning

confidence: 99%

Section: Voltage Control For MMC Based Railway Power Supply Integrmentioning

confidence: 99%

DC voltage control for MMC‐based railway power supply integrated with renewable generation

Sun

et al. 2020

IET Renewable Power Generation

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“…Meanwhile in [17] the advantages of using DC in electrified metropolitan railways is studied. There are several works on energy optimization, for instance using genetic algorithms [7] or the advantages of electrical smart grids [11]. But we have found no publication addressing the verification of a railway electrification (apart from the aforementioned [19]).…”

Section: ------------------------------------------------------------mentioning

confidence: 99%

An Algebraic Approach to DC Railway Electrification Verification

2019

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Gröbner bases have been applied to a number of problems related to the verification of Knowledge-Based Systems (KBS) and other problems within graph theory. In particular, the authors have developed in previous papers algebraic approaches to decide whether a situation in a railway interlocking system is safe or not. These algebraic approaches stand out because of the briefness of the code (as they use implementations of well-known algorithms for solving linear or algebraic systems provided by computer algebra systems). The authors have also developed a matrix-based computer tool that helps an expert to check whether a proposed railway electrification scenario (given through the topology of the railway station and the position of the isolation devices and the position and state of the "electrical bypasses" and feeders) fulfills the mandatory requirements of the Spanish railway infrastructure administrator (ADIF) for 3,000 V railway electrifications or not. The second author works in the field of railway electrifications and he compares the present-day methods for verification of railway electrifications with the way KBS were verified in the past (manually by experts). In this article we approach this latter problem using algebraic techniques. The new computer tool is based on an algebraic translation of the problem (instead of based on the use of matrices)

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“…Moreover, this scheme can also realize the functions of power quality improvement, peak cutting and valley filling, management and control for clean energy, active control for line voltage and emergency power supply. At present, the railway smart grid concept is proposed and offers a new perspective for the eco-friendliness of railway systems [37,38]. The scheme in [36] will create more opportunities and controllability for smart railway systems, and have great significance for the construction of smart railway grids.…”

Section: Introductionmentioning

confidence: 99%

Centralized-Decentralized Control for Regenerative Braking Energy Utilization and Power Quality Improvement in Modified AC-Fed Railways

Gao

et al. 2020

Energies

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This paper proposes a centralized-decentralized control strategy for regenerative braking energy utilization and power quality improvement in the modified AC-fed railway system with energy-storage-based smart electrical infrastructure. The proposal of a centralized-decentralized control strategy can enhance the ability to withstand and rapidly recover from disruptions, thus providing further guarantees for safe and reliable operation and energy conservation for railway systems. First of all, the description and control strategy of the modified railway system are outlined, and then the control principles and implementation process of the centralized control and decentralized control strategies are given. Moreover, a method of load power detection and regulated power reference calculation is proposed. Finally, the effectiveness of the proposed strategy is verified in a case of a modified railway system consisting of four traction substations and eight power supply sections. The results demonstrate that regenerative braking energy can be efficiently utilized in railways and that power quality can be improved using the proposed centralized-decentralized control strategy.

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Railway Electrical Smart Grids: An introduction to next-generation railway power systems and their operation

Cited by 67 publications

References 0 publications

DC voltage control for MMC‐based railway power supply integrated with renewable generation

DC voltage control for MMC‐based railway power supply integrated with renewable generation

An Algebraic Approach to DC Railway Electrification Verification

Centralized-Decentralized Control for Regenerative Braking Energy Utilization and Power Quality Improvement in Modified AC-Fed Railways

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