scholarly journals Proposal and effect evaluation of RPC application with energy storage system for regenerative energy utilization of high speed railway

2017 ◽  
Vol 7 (1) ◽  
pp. 227-232 ◽  
Author(s):  
Kazunori Takagi ◽  
Masaaki Takagi ◽  
Hitoshi Hayashiya ◽  
Yumiko Iwafune
Keyword(s):  
Energy Storage ◽  
High Speed ◽  
Storage System ◽  
Energy Storage System ◽  
Energy Utilization ◽  
Effect Evaluation ◽  
High Speed Railway ◽  
Regenerative Energy

scholarly journals Case study of stationary energy storage device in a 3 kV DC traction system

2018 ◽  
Vol 180 ◽  
pp. 02005 ◽  
Author(s):  
Włodzimierz Jefimowski ◽  
Anatolii Nikitenko
Keyword(s):  
Energy Storage ◽  
Storage System ◽  
Energy Storage System ◽  
Energy Utilization ◽  
Storage Device ◽  
Location Selection ◽  
Train Operation ◽  
Traction Substations ◽  
Traction System ◽  
Regenerative Energy

The paper presents the results of economic study of energy storage system (ESS) implemented in 3 kV DC power supply system. Two conceptions of ESS have been investigated: ESS with supercapacitor (SC) and hybrid ESS (HESS) with SC and LFP battery. The investigated locations of energy storage systems are considered among existing traction substations in two railway lines with different density of train operation. The considered aims of energy storage system implementation are decreasing of energy consumption by maximum regenerative energy utilization and reduction of peak 15- min power demand of traction substation. The paper presents a method of regenerative power estimation depending on the location of the considered ESS implementation point. Also the method of optimal location selection of ESS in terms of minimization of Simple Payback Time (SPBT) of investment is presented. Besides the influence of initial cost value as well as energy price on the SPBT value are investigated. The results are compared between two railway lines with different number of trains operating.

scholarly journals Stationary energy storage system in a 3 kV DC – the conception comparison

2018 ◽  
Vol 180 ◽  
pp. 02013
Author(s):  
Włodzimierz Jefimowski
Keyword(s):  
Energy Storage ◽  
Peak Power ◽  
Storage System ◽  
Energy Storage System ◽  
Energy Utilization ◽  
Power Demand ◽  
Dc System ◽  
Traction Substation ◽  
Stationary Energy ◽  
Regenerative Energy

The paper presents the research results of a few different conception of stationary energy storage system in a 3 kV DC system. The most attention is focused on the comparison between two topologies of the ESS: energy storage system with supercapacitor and with supercapacitor and LFP battery. The variants are compared in terms of energy saving and peak power demand reduction. The implementation of ESS with SC results the decrease of active energy drawn from traction substation. Meanwhile the implementation of ESS with SC and LFP battery leads to achieving of two aims - decreasing of active energy consumption by maximization of regenerative energy utilization and reduction of 15 - min. peak power demand of traction substation.

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