Energy Is On Board: Energy Storage and Other Alternatives in Modern Light Railways

Arboleya, Pablo; Bidaguren, Peru; Armendariz, Urtzi

doi:10.1109/mele.2016.2584938

Cited by 70 publications

(36 citation statements)

References 1 publication

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“…A mathematical approach for implementing multi-rate analysis in railroad traction systems by means of heterogeneous multi-scale approaches is presented in [6]. Arboleya et al [7] suggests that on-board accumulation is the best option for energy recovery in a safe way in light railroad systems from the point of view of investment cost and flexibility. An approach based on a backward/forward sweep technique for solving power flows in weakly meshed DC traction systems is presented in [8].…”

Section: Introductionmentioning

confidence: 99%

Optimal Energy Management of Railroad Electrical Systems with Renewable Energy and Energy Storage Systems

Park

Salkuti

2019

Sustainability

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The proposed optimal energy management system balances the energy flows among the energy consumption by accelerating trains, energy production from decelerating trains, energy from wind and solar photovoltaic (PV) energy systems, energy storage systems, and the energy exchange with a traditional electrical grid. In this paper, an AC optimal power flow (AC-OPF) problem is formulated by optimizing the total cost of operation of a railroad electrical system. The railroad system considered in this paper is composed of renewable energy resources such as wind and solar PV systems, regenerative braking capabilities, and hybrid energy storage systems. The hybrid energy storage systems include storage batteries and supercapacitors. The uncertainties associated with wind and solar PV powers are handled using probability distribution functions. The proposed optimization problem is solved using the differential evolution algorithm (DEA). The simulation results show the suitability and effectiveness of proposed approach.

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Section: Introductionmentioning

confidence: 99%

Optimal Energy Management of Railroad Electrical Systems with Renewable Energy and Energy Storage Systems

Park

Salkuti

2019

Sustainability

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“…An effective solution to the above issues is the implementation of an energy storage system (ESS) on urban transportation networks for braking energy recovery purposes [2]. Another feasible solution is the direct installation of an ESS on LR vehicles that can meet the requirements of traction applications and serve as power supplies [3][4][5][6]. An onboard ESS for LR vehicles has the following advantages: First, urban transportation areas can be extended to catenary-free zones.…”

Section: Introductionmentioning

confidence: 99%

“…Third, it allows a flexible and simpler infrastructure. Finally, the energy recovery of an onboard ESS, compared to its competitors, has greater flexibility and lower investment costs [6].…”

Section: Introductionmentioning

confidence: 99%

An Improved Energy Management Strategy for Hybrid Energy Storage System in Light Rail Vehicles

et al. 2018

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A single-objective optimization energy management strategy (EMS) for an onboard hybrid energy storage system (HESS) for light rail (LR) vehicles is proposed. The HESS uses batteries and supercapacitors (SCs). The main objective of the proposed optimization is to reduce the battery and SC losses while maintaining the SC state of charge (SOC) within specific limits based on the distance between consecutive LR stations. To do this, a series of optimized SOC limits is used to prevent the SC from becoming exhausted prematurely instead of the standard SC SOC penalty term in the cost function. Meanwhile, a rule-based EMS (RB-EMS) is used to give the SCs charging priority over the batteries when the vehicle is braking. Moreover, a simplified method for the optimization is proposed to reduce the computational burden. Simulation and experimental results for the proposed EMS and a standard SC SOC penalty-based cost function optimization are provided to evaluate losses. As a result, it is shown that the proposed EMS, compared with standard SC SOC penalty-based cost function optimization, decreases losses and prevents the SOC from reach the discharging limits.

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“…In addition, since the existing supply facility and the regenerative solution are at the same location, there is just a small change in the amount of current flowing through the catenary, and it is difficult to significantly improve the catenary losses. In the case of on-board application, since it is possible for it to handle the regenerative energy by itself in the train, it can maximize the use of regenerative energy and reduce the catenary loss significantly with the lowered load current flowing through the catenary [19,20]. However, the increase in the driving mass due to the on-board mounted storage may increase the driving energy itself.…”

Section: Introductionmentioning

confidence: 99%

Optimal Capacity Estimation Method of the Energy Storage Mounted on a Wireless Railway Train for Energy-Sustainable Transportation

Kim

Lee

et al. 2018

Energies

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Although electric railway systems have gone through many technological innovations in their electrical, mechanical and structural engineering since the energy paradigm conversion to electrical energy, the conventional feeding system based on the catenary contact is still being applied. In order to solve the problems of the contact-based feeding system that arise and to build up the energy-sustainable electric railway system simultaneously, this paper considers the wireless railway train (WRT), which is fed by storages mounted on the board without catenary contact during driving and charged at a platform during a stop. In order to maximize the energy improvement of WRTs' operation, the optimal power and storage capacity estimation method considering the increased weight of the additional storage devices is proposed. Through case studies of the electrical and topographical conditions of the actual operating railway route, compared with the electrical performance of the existing railway trains, it is verified that the application of WRTs leads to facility capacity margin enlargement through the peak power reduction, and cost-effectiveness improvement through the reduction of catenary loss and driving energy.

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Energy Is On Board: Energy Storage and Other Alternatives in Modern Light Railways

Cited by 70 publications

References 1 publication

Optimal Energy Management of Railroad Electrical Systems with Renewable Energy and Energy Storage Systems

Optimal Energy Management of Railroad Electrical Systems with Renewable Energy and Energy Storage Systems

An Improved Energy Management Strategy for Hybrid Energy Storage System in Light Rail Vehicles

Optimal Capacity Estimation Method of the Energy Storage Mounted on a Wireless Railway Train for Energy-Sustainable Transportation

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