A study on calculation of DC railway loadflow with energy storage system

Lee, Han Min; Jeong, Eui Jin; Jeong, Seh Chan

doi:10.1109/iccas.2010.5670179

Cited by 6 publications

(2 citation statements)

References 4 publications

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“…For R R , it is defined as Equation ( 4) by the Davis Equation. The coefficients A, B, and C of R R are values obtained by experiments that change depending on the characteristics of the train, road surface, and rail [22][23][24].…”

Section: Train Performance Simulationmentioning

confidence: 99%

“…In order to improve energy efficiency, various analytical models were derived based on the optimal train control method using the Pontryagin Maximum Principle [16][17][18][19][20]. However, several interpretation methods lack an interpretation of the entire traction system, and power-flow analysis is essential to analyze the improvement of overall system efficiency [21,22]. Power-flow analysis of the power supply system can find regions where regenerative braking occurs the most for each substation section.…”

Section: Introductionmentioning

confidence: 99%

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A Study on the Train Brake Position-Based Control Method for Regenerative Inverters

2022

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The use an inverter is one of the representative ways to utilize regenerative braking energy in railway systems. Due to the nature of urban railways that generate a large amount of regenerative energy, the economic advantages are clear. However, in the case of the existing inverter operation method, a method of operating the inverter using the threshold voltage is used, which has a disadvantage in that power cannot be utilized between the no-load voltage and the threshold voltage. Therefore, in this paper, we propose an optimal location selection method and capacity calculation method for installing a regenerative inverter in an urban rail system, and a control method according to the train brake position to increase the regenerative energy utilization rate. First, the inverter capacity and location were selected by selecting the maximum regenerative energy generation for each substation section through the train performance simulation (TPS) based DC power simulation (DCPS). An inverter control method based on train brake position (BP method) is introduced. Finally, PSCAD/EMTDC, a power analysis program, was used to verify the proposed method. As a result, the use of regenerative energy by an inverter increased by about 62.6%, and more energy was saved at nearby substations through the BP method.

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Section: Train Performance Simulationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A Study on the Train Brake Position-Based Control Method for Regenerative Inverters

2022

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An Optimal Multi-objective Train Speed Profile for Mass Transit Systems Using a Genetic Algorithm-Based Technique

Sumpavakup

Kirawanich

2020

Lecture Notes in Mobility

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Optimal energy saving in DC railway system with on-board energy storage system by using peak demand cutting strategy

2017

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A problem of peak power in DC-electrified railway systems is mainly caused by train power demand during acceleration. If this power is reduced, substation peak power will be significantly decreased. This paper presents a study on optimal energy saving in DC-electrified railway with on-board energy storage system (OBESS) by using peak demand cutting strategy under different trip time controls. The proposed strategy uses OBESS to store recovered braking energy and find an appropriated time to deliver the stored energy back to the power network in such a way that peak power of every substations is reduced. Bangkok Mass Transit System (BTS)-Silom Line in Thailand is used to test and verify the proposed strategy. The results show that substation peak power is reduced by 63.49% and net energy consumption is reduced by 15.56% using coasting and deceleration trip time control.

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A study on calculation of DC railway loadflow with energy storage system

Cited by 6 publications

References 4 publications

A Study on the Train Brake Position-Based Control Method for Regenerative Inverters

A Study on the Train Brake Position-Based Control Method for Regenerative Inverters

An Optimal Multi-objective Train Speed Profile for Mass Transit Systems Using a Genetic Algorithm-Based Technique

Optimal energy saving in DC railway system with on-board energy storage system by using peak demand cutting strategy

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