Train speed profile optimization with on-board energy storage devices: A dynamic programming based approach
The remaining energy of OBESDs in this train is increased in the process of storing regenerative energy during the braking mode, which will be reused during the following traction operation. Download : Download high-res image (758KB) Download :
Review of Studies on Energy-Efficient Train Operation in High-Speed Railway
Then presents the EETO in HSRs, including three categories: energy-efficient train control, energy-efficient train timetabling, and EETO considering train timetabling and driving strategy. Next, the current research status and progress on three aspects of EETO in HSRs, namely optimization algorithm, constraint condition, and oriented scenario, are sorted out.
Energy-efficient train control incorporating inherent reduced-power and hybrid braking characteristics of railway
1. Introduction Railway transportation has been considered a type of green transportation with significant comparative advantages in energy efficiency and environmental sustainability. The recent report from the International Union of Railways (IEA, 2022) demonstrates that average rail emissions per passenger kilometer are
A Survey on Energy-Saving Operation of Railway Transportation Systems
This paper reports the latest developments and the state of the art on energy-saving control in railway systems. Discussion is focussed on two categories, i.e., driving strategies and ESS, some energy-saving driving principles are introduced. The latest research results of driving strategies and ESS are reviewed.
Establishment and Analysis of Energy Consumption Model of Heavy-Haul Train on Large Long Slope
energies Article Establishment and Analysis of Energy Consumption Model of Heavy-Haul Train on Large Long Slope Qiwei Lu 1,*, Bangbang He 1, Mingzhe Wu 1, Zhichun Zhang 2, Jiantao Luo 2, Yankui Zhang 1, Runkai He 1 and Kunyu Wang 1 1 School of Mechanical Electronic and Information Engineering, China University of Mining and Technology,
Optimal control and energy storage for DC electric train systems using evolutionary algorithms | Railway
Electrified railways are becoming a popular transport medium and these consume a large amount of electrical energy. Environmental concerns demand reduction in energy use and peak power demand of railway systems. Furthermore, high transmission losses in DC railway systems make local storage of energy an increasingly attractive
Advanced Rail Energy Storage
Following are the specifications of a 670 MW ARES energy storage system: Estimated capital costs $1,350kW / $168/kw-hr. 8 hours discharge at full output. 5,344 Mw-hr discharge capacity. 2 rail storage yards @ 3000'' elevation differential. 5
Rail-based mobile energy storage as a grid-reliability
The solution. We have estimated the ability of rail-based mobile energy storage (RMES) — mobile containerized batteries, transported by rail between US power
Optimization research on hybrid energy storage
Taking a high-speed railway station in China as an example, this paper analyses the energy storage configuration of high-speed railway power supply system. The traction load curve of high
Processes | Free Full-Text | Energy-Efficient Train Driving Strategy with Considering the Steep Downhill Segment
Implementation of energy-efficient train driving strategy is an effective method to save train traction energy consumption, which has attracted much attention from both researchers and practitioners in recent years. Reducing the unnecessary braking during the journey and increasing the coasting distance are efficient to save energy in urban rail
Let It Roll
Jim Kelly, an extremely experienced energy storage researcher, postulates that using gravity, energy storage efficiency is likely to be around 90 percent. His idea is to use
Energy-Efficient Train Control with Onboard Energy Storage Systems considering Stochastic Regenerative Braking Energy
In addition, regenerative braking energy utilization is becoming increasingly important to avoid energy waste in the railway systems, undermining the sustainability of urban railway transportation. However, the intelligent energy management of the trains equipped with OESSs considering regenerative braking energy utilization is
Energies | Free Full-Text | Energy Management Strategy of Hybrid Energy Storage System Based on Road Slope
To maximize the performance of power batteries and supercapacitors in a hybrid energy storage system (HESS) and to resolve the conflict between the high power demands of electric vehicles and the limitations of high-current charging and discharging of the power battery, a vehicle power demand model incorporating road slope information has been
Railway
The Railway is a buildable structure which trains run on. Railways connect Train Stations and form a logistic network besides Conveyors, Drones and optional automated wheeled vehicles. Assuming an infinitely long cargo train runs on a flat, horizontal railway at a constant speed, the theoretical throughput is: Throughput = Freight Car slots × item stack
Sensors | Free Full-Text | Energy-Saving Optimization Method of
The transformation of railway infrastructure and traction equipment is an ideal way to realize energy savings of urban rail transit trains. However, upgrading railway infrastructure and traction equipment is a high investment and difficult process. To produce energy-savings in the urban rail transit system without changing the existing
Mountain Gravity Energy Storage: A new solution for closing the gap between existing short
1. Introduction Islanded grids usually have to operate a relatively expensive energy system due to the complications related to (i) maintaining energy security, including the logistics of importing and storing fossil fuels [1, 2]; (ii) the requirements for meeting electricity demand reliably at any time, which leaves the system with challenges related
These Cool Energy Storage Trains Simply Work With the Power
To release energy, when demand is higher on peak, you simply let the train roll back down the slope. The trains, under the influence of gravity, generate power
Experimental Investigation of Single Slope Solar Still Using Black Granite and Marble Stones as Energy Storage
Experimental Investigation of Single Slope Solar Still Using Black Granite and Marble Stones as Energy Storage Material (ESM) Abstract: Theoretical and experimental research into solar stills that employ black granite stones and Marbles stone as heat storage medium have been conducted in this research.
Gravity Train as Energy Storage | Amusing Planet
Gravity Train as Energy Storage. Energy grids running on renewable energy sources need storage. The most common way to store energy on a grid scale is through "pumped" hydropower, where the
ARES North America
Advanced Rail Energy Storage (ARES) uses proven rail technology to harness the power of gravity, providing a utility-scale storage solution at a cost that beats batteries. ARES'' highly efficient electric
Underground Gravity Energy Storage: A Solution for Long
energy (VRE) sources require energy storage options to match energy demand reliably at different time scales. This article suggests using a gravitational-based
Potential of different forms of gravity energy storage
In 2021, Beijing Qinghang Science and Technology Co., Ltd. [40] also proposed a train energy storage system, which can realize the peak valley regulation
TransEnergy – a tool for energy storage optimization, peak power and energy consumption reduction in DC electric railway
Railway electricity demand in systems internationally is rising because of (a) electrification of diesel services [1], (b) longer and more frequent trains in response to increased passenger demand, and (c) the higher power demands of modern rolling stock (improved acceleration and interior comfort, e.g. air conditioning) (Smulders, 2005).
Optimal Control of Reversible Substations and Wayside Storage Devices for Voltage Stabilization and Energy Savings in Metro Railway
Growing concerns about environmental issues dictate the necessity for improving the energy efficiency and total performance of metro railway systems. Proper management of the regenerative energy is a key element in this direction, and several strategies, such as timetable optimization, use of reversible substations, and installation
ARES system to put energy storage on the right track
As someone doing RE, EV''s, etc this looks real good except train rails won''t work on such slopes needed, not enough traction. But a rack on the ground solves that as with other mountain trains
Analysis of Influencing Factors of Energy Efficiency of Slope Gravity Energy Storage
The gravity energy storage system has good research and development value and broad application prospects. In this paper, the charging and discharging principle of slope gravity energy storage system is introduced. The influence of electrical loss and mechanical loss on the energy efficiency of slope gravity energy storage system is analyzed and
GravityLine
The GravityLine TM storage system is made up of multiple 5MW tracks and can vary in size from 5 MW to 1 GW of power and an equivalent range of energy (MWh to GWh) depending upon weight and number of mass cars, slope and distance. ARES'' GravityLine TM design boasts duration flexibility of between 15 mins and 24+ hours.
(PDF) Establishment and Analysis of Energy Consumption Model of Heavy-Haul Train on Large Long Slope
or Equation (25), the total energy consumptio n of the interval is W = 103.92 kW·h. To summarize, the total energy consumption of the intervals in Δ Δ, and Δ is W = W + W. + W = 118.10 kW·h
Adaptive slope and CPSO-based energy management strategy of hybrid energy storage
Energy management strategy play a crucial role in the optimal control of energy in pure electric logistics vehicles with hybrid energy storage system (HESS). Chen Z, Mi CC, Xu J, et al. (2014) Energy management for a power-split plug-in hybrid electric vehicle
Gravity energy storage technology based on slopes and mountains
Based on this analysis, we propose an enhanced slope gravity energy storage technology: slope cable rail gravity energy storage. This approach combines the strengths of slope
First Grid-Scale Rail Energy Storage Project Gets Environmental
As Jeff St. John has reported, the world''s two first compressed-air energy storage (CAES) projects -- the 290-megawatt plant in Huntorf, Germany, built in 1978,
Energy-efficient Train Control Considering Energy Storage
The optimization of the train speed trajectory and the traction power supply system (TPSS) with hybrid energy storage devices (HESDs) has significant potential to reduce electrical energy consumption (EEC). However, some existing studies have focused predominantly on optimizing these components independently and have ignored the goal
Assessment of pumped hydropower energy storage potential
However, up to now pumped hydropower energy storages (PHES) can achieve the highest power rating as it can reach up to 5 GW. In contrast, the two closest competing technologies, thermal energy storage and compressed air storage can only reach one tenth of this rating [5]. PHES is the most cost efficient technology per storage
Onboard energy storage in rail transport: Review of
The two energy sources are controlled so that hydrogen represents the primary energy supply to the train and is the only one that remains active when the train is coasting. The batteries are mainly
Energy-Efficient Train Timetable Optimization in the Subway System with Energy Storage
In subway systems, electrical trains can generate considerable regenerative braking energy while braking, and such energy can be fed back to the contact line for further reuse by other accelerating trains, or dissipated by heating resistors. In order to reduce the total energy consumption during the operations of trains, a critical problem
These Concrete Gravity Trains May Solve the Energy
When each 300-ton train moves down the slope, it can provide 50MW of power to help stabilize the grid. In total, the track for the Nevada system will stretch 9.2 kilometers through the desert
Underground Gravity Energy Storage: A Solution for Long-Term Energy Storage
The plant has a speed of 0.5 m/s and a power capacity of 30 MW. The lifetime of the power generation system is 20 years. The UGES energy storage system assumes 40,000,000 tons of sand with an average generation head of 1000 m. The plant''s storage capacity is 98 GWh, and the energy storage investment costs costs.
Advanced Rail Energy Storage: Green Energy Storage for Green Energy
Advanced Rail Energy Storage (ARES) has developed a breakthrough gravity-based technology that will permit the global electric grid to move effectively, reliably, and cleanly assimilate renewable energy and provide significant stability to the grid. ARES stores energy by raising the elevation of mass against the force of gravity, and recovers
