Possibility of energy saving by introducing energy conversion and energy storage technologies in traction power supply system

Hayashiya, Hitoshi; Kikuchi, Shinya; Matsuura, Kazushi; Hino, Masami; Tojo, Masateru; Kato, Tetsuya; Ando, Makoto; Oikawa, Takatoshi; Kamata, Mitsuru; Munakata, Hiroshi

doi:10.1109/epe.2013.6631780

Cited by 40 publications

(24 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Because RPC can realize power interchange between two different electric circuits with phase difference via AC/DC/ AC conversion, it can increase the opportunity of simultaneous utilization of residual regenerative power by interchanging the residuals to adjacent electric circuit. Figure 13 shows the circuit configuration around RPC at Ushiku SP [10]. Ushiku SP is located between Fujishiro SS and Tsuchiura SS on Joban Line, and RPC can interchange residual regenerative power from one feeder circuit to another.…”

Section: Regenerative Energy Utilization In Ac Traction Power Supply mentioning

confidence: 99%

Recent Trend of Regenerative Energy Utilization in Traction Power Supply System in Japan

Hayashiya

2017

Urban Rail Transit

Self Cite

View full text Add to dashboard Cite

In 2006, the first Lithium-ion battery in Japan was installed in traction power supply system by the West Japan Railway Company and now more than 20 energy storage systems have already been installed in traction power supply system in Japan. In this article, the recent Japanese trends of regenerative energy utilization are summarized not only in DC railway but also in AC railway. We, East Japan Railway Company, have installed three energy storage systems for DC railway and one railway static power conditioner (RPC), not energy storage system, for AC railway for regenerative energy utilization. The effects of these systems are also shown quantitatively in this paper.

show abstract

Section: Regenerative Energy Utilization In Ac Traction Power Supply mentioning

confidence: 99%

Recent Trend of Regenerative Energy Utilization in Traction Power Supply System in Japan

Hayashiya

2017

Urban Rail Transit

Self Cite

View full text Add to dashboard Cite

show abstract

“…Energy storage systems installed to d.c. traction power supply system in Japan[2](revised)B. Examples of JR East…”

mentioning

confidence: 99%

Application examples of energy saving measures in Japanese DC feeding system

Suzuki

Hayashiya

Yamanoi³

et al. 2014

2014 International Power Electronics Conference (IPEC-Hiroshima 2014 - ECCE ASIA)

Self Cite

View full text Add to dashboard Cite

In this paper, some application examples of energy saving measures in two representative Japanese railway companies, mainly in d.c. electric traction power supply system, are introduced. The effect of electric energy storage systems installed to substations is mentioned especially. In addition, it is also described about the potential of regenerative braking energy, which will be able to be utilized by installation of energy storage systems or other measures.

show abstract

“…Furthermore, it is not certain that the back-flown regenerative power is effectively utilized. Due to the single-phase characteristics of the back-flown power, it may be consumed in the traction transformers as a circulation current or as a heat [15]. In addition, the back-flown regenerative power, due to its stochasticity, may have impacts on the public grid.Another option is to inject the RBE into the distribution grid via a regenerative inverter to power the distribution load in railway power supply systems, such as lighting, air conditioning, elevators, escalators, and so on.…”

mentioning

confidence: 99%

mentioning

confidence: 99%

Energy-Storage-Based Smart Electrical Infrastructure and Regenerative Braking Energy Management in AC-Fed Railways with Neutral Zones

Gao

et al. 2019

Energies

View full text Add to dashboard Cite

This paper presents a modified power supply system based on the current alternating current (AC)-fed railways with neutral zones that can further improve the eco-friendliness and smart level of railways. The modified system complements the existing infrastructure with additional energy-storage-based smart electrical infrastructure. This infrastructure comprises power electronic devices with energy storage system connected in parallel to both sides of each neutral zone in the traction substations, power electronic devices connected in parallel to both sides of each neutral zone in section posts, and an energy management system. The description and functions of such a modified system are outlined in this paper. The system allows for the centralized-and distributed-control of different functions via an energy management system. In addition, a control algorithm is proposed, based on the modified system for regenerative braking energy utilization. This would ensure that all the regenerative braking energy in the whole railway electrical system is used more efficiently. Finally, a modified power supply system with eight power supply sections is considered to be a case study; furthermore, the advantages of the proposed system and the effectiveness of the proposed control algorithm are verified.The installation of equipment that provide clean energy from renewable sources (e.g., solar panels and wind generators) to feed the traction loads in rail may have a significant impact in the energy costs and CO 2 emissions of a railway system, increasing the environment friendliness of the railway [4][5][6]. The introduction of renewable energy is to partially reduce the depletion of non-renewable energy resources and thus reduce CO 2 emissions. These outcomes have been favored by scholars and many countries, such as North American, European, China, and Japan [6,7]. But in practice, the traction energy consumption of railways has not been reduced.By contrast, the efficient driving and regenerative braking schemes differ the renewable energy scheme. They can essentially reduce the traction energy consumption of railways.Efficient driving is an effective way to reduce the traction energy consumption of rolling stock. Typically, the running state of vehicles comprises three phases: braking, speed-holding (cruising) and acceleration. At present, many literatures have studied the efficient driving and realize the traction energy savings through the optimum combination of these phases [8][9][10][11][12][13]. To implement such trajectories and maximize savings, some auxiliary systems, such as driver advisory systems (DAS) [10,11] and automatic train operation (ATO) [12,13], must be provided to drivers. The trials of such systems have shown savings of 5-18%. However, with efficient driving, the savings of energy consumption may sacrifice service quality, such as the train speed, stopping time, etc. [1].Regenerative braking energy (RBE) recovery is a simple and efficient way to reduce energy consumption, which cannot influence the operati...

show abstract

Possibility of energy saving by introducing energy conversion and energy storage technologies in traction power supply system

Cited by 40 publications

References 4 publications

Recent Trend of Regenerative Energy Utilization in Traction Power Supply System in Japan

Recent Trend of Regenerative Energy Utilization in Traction Power Supply System in Japan

Application examples of energy saving measures in Japanese DC feeding system

Energy-Storage-Based Smart Electrical Infrastructure and Regenerative Braking Energy Management in AC-Fed Railways with Neutral Zones

Contact Info

Product

Resources

About