Wayside Energy Storage System for Peak Demand Reduction in Electric Rail Systems

Khodaparastan, Mahdiyeh; Dutta, Oindrilla; Mohamed, Azah

doi:10.1109/ias.2018.8544599

Cited by 7 publications

(4 citation statements)

References 10 publications

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“…On the other hand the use of some battery technologies, for example, nickel metal hydride (NiMH) technology, may be associated with a potential risk of cell explosion [11]. Although the implementation of a WESS [13] or TESS based on supercapacitor (SC) technology also has a positive effect on the peak power reduction [13], and the off-board location allows for a freer use of a wider group of energy storage (ES) technologies, especially lithium-ion (Li-ion) [14]. A very important aspect is also the optimal determination of the WESS location [15], which in turn may lead to a wider application, such as:…”

Section: Introduction 1energy Storage Systems In Traction Applicationmentioning

confidence: 99%

Fault-Tolerant Control in a Peak-Power Reduction System of a Traction Substation with Multi-String Battery Energy Storage System

et al. 2021

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This paper introduces the concept of fault-tolerant control (FTC) of a multi-string battery energy storage system (BESS) in the dynamic reduction system of a traction substation load (DROPT). The major task of such a system is to reduce the maximum demand for contracted peak power, averaged for 15 min. The proposed concept, based on a multi-task control algorithm, takes into account: a three-threshold power limitation of the traction substation, two-level reduction of available power of a BESS and a multi-string structure of a BESS. It ensures the continuity of the maximum peak power demand at the contracted level even in the case of damage or disconnection of at least one chain of cells of the battery energy storage (BES) or at least one converter of the power conversion system (PCS). The proposed control strategy has been tested in a model of the system for dynamic reduction of traction substation load with a rated power of 5.5 MW. Two different BESS implementations have been proposed and several possible cases of failure of operations have been investigated. The simulation results have shown that the implementation of a multi-string BESS and an appropriate control algorithm (FTC) may allow for maintenance of the major assumption of DROPT, which is demanded power reduction (from 3.1 MW to 0.75 MW), even with a reduction of the BESS available power by at least 25% and more in the even in fault cases.

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Section: Introduction 1energy Storage Systems In Traction Applicationmentioning

confidence: 99%

Fault-Tolerant Control in a Peak-Power Reduction System of a Traction Substation with Multi-String Battery Energy Storage System

et al. 2021

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“…Battery energy storage systems implemented in the traction substation and wayside energy storage systems (WESSs) [5][6][7][8][9] contribute to the reduction of peak power and energy consumption [10]. Peak power reduction impacts the 15 min average power reduction [11] and, consequently, reduces the contracted power at the traction substation [12].…”

Section: State-of-the-art Battery Energy Storage Systemsmentioning

confidence: 99%

Small-Scale Battery Energy Storage System for Testing Algorithms Aimed at Peak Power Reduction

Sozański,

Wermiński,

Kaniewski

2024

Energies

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This study describes a laboratory model of a battery energy storage system (BESS) designed for testing algorithms aimed at reducing peak power consumption in railway traction substations. The system comprises a DC/DC converter and battery energy storage. This article details a laboratory model of a bidirectional buck-boost DC/DC converter, which is used to transfer energy between the battery energy storage and a DC line. It presents an analysis of DC/DC converter systems along with simulation studies. Furthermore, the results of laboratory tests on the DC/DC converter model are also provided. The control algorithm of the system in the traction substation is focused on reducing peak power, offering benefits such as lower charges for the railway operator due to the possibility of reducing contracted power requirements. From the perspective of the power grid, the reduction in power fluctuations and, consequently, voltage sags, is advantageous. This paper includes a description of a hardware simulator for verifying the system’s control algorithms. The verification of the control algorithms was performed through experimental tests conducted on a laboratory model (a hardware simulator) of the system for dynamic load reduction in traction substations, on a power scale of 1:1000 (5.5 kW). The experimental tests on the laboratory model (hardware simulator) demonstrated the effectiveness of the algorithm in reducing the peak power drawn from the power source.

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“…They were sized in a way that provided a 705 A current for 12.3 seconds (353 kW, 1.2 kWh). A Maxwell supercapacitor (K2 series) [29][30][31][32] and VYCON flywheel [8] were used as the ESS technologies. Based on the ESS technology characteristics (for example, maximum voltage and current of the cell or module), they need to be oversized to provide the required current and voltage.…”

Section: Peak Demand Reductionmentioning

confidence: 99%

Flywheel vs. Supercapacitor as Wayside Energy Storage for Electric Rail Transit Systems

Khodaparastan

Mohamed

2019

Inventions

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Energy storage technologies are developing rapidly, and their application in different industrial sectors is increasing considerably. Electric rail transit systems use energy storage for different applications, including peak demand reduction, voltage regulation, and energy saving through recuperating regenerative braking energy. In this paper, a comprehensive review of supercapacitors and flywheels is presented. Both are compared based on their general characteristics and performances, with a focus on their roles in electric transit systems when used for energy saving, peak demand reduction, and voltage regulation. A cost analysis is also included to provide initial guidelines on the selection of the appropriate technology for a given transit system.

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Wayside Energy Storage System for Peak Demand Reduction in Electric Rail Systems

Cited by 7 publications

References 10 publications

Fault-Tolerant Control in a Peak-Power Reduction System of a Traction Substation with Multi-String Battery Energy Storage System

Fault-Tolerant Control in a Peak-Power Reduction System of a Traction Substation with Multi-String Battery Energy Storage System

Small-Scale Battery Energy Storage System for Testing Algorithms Aimed at Peak Power Reduction

Flywheel vs. Supercapacitor as Wayside Energy Storage for Electric Rail Transit Systems

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