On-board energy storage devices (OESD) and energy-efficient train timetabling (EETT) are considered two effective ways to improve the usage rate of regenerative braking energy (RBE) of subway trains. EETT is less costly but has lower ceilings, whereas OESD, although expensive, maximizes the reuse of RBE. To make the RBE usage rate of the train
Read MoreThe monthly average natural energy efficiency (NEE) and storage efficiency (SE) were determined to be 10.75% and 17.47%, respectively. Notably, the shallow rock exhibited the highest NEE but the lowest SE. The energy used for fresh air pre-treatment derives
Read MoreThis data was used to determine train electrical power and energy consumption, regenerative braking power and energy, onboard resistor power and energy dissipation,
Read MoreAiming at the poor performance of permanent magnet synchronous motor (PMSM) under low carrier wave ratio synchronous modulation caused by low switching frequency of power devices, a pulse width modulation (PWM) analysis method based on the mathematical model of PMSM is proposed. A comparative study of selective harmonic elimination
Read MoreDOI: 10.1016/J.TUST.2009.11.002 Corpus ID: 110840290 Comparative studies on the performance of a roadheader, impact hammer and drilling and blasting method in the excavation of metro station tunnels in Istanbul Open-pit mining method is used in many calcite
Read MoreDOI: 10.1109/COBEP.2015.7420268 Corpus ID: 31781176 Comparative study of existing methods for improving the energy efficiency of the system traction of subway @article{deSousa2015ComparativeSO, title={Comparative study of
Read MoreIn this paper, a new energy storage system (ESS) is developed for an innovative subway without supply rail between two stations. The ESS is composed of a
Read MoreThis paper presents a comparative analysis of energy storage methods for energy systems and complexes. Recommendations are made on the choice of storage technologies for the modern energy
Read MoreOne of the construction methods for shallow subway stations is a cut-and-cover approach using the diaphragm wall system. This method can be functional in conditions where minimum displacements are essential. M2 island station of Isfahan metro in Iran, with a 100-m length and 23-m width, is close to the historical area of Naghshe
Read MoreShuai Kou Manlin Huo Lian Jin Hua Nie Yuxin Cao Shaowei Ren Chong Bian Year: 2024 Comparative Study on Calculation Methods of Temperature Field of Mass Concrete Structures in Subway Stations IDEE EAI DOI: 10.4108/eai.24-11-2023.2343470
Read MoreThe investigated case was an excavation of a highway tunnel located above an existing metro tunnel in Shanghai. The highway tunnel was constructed by the cut-and-cover method. The excavation of the highway tunnel was 27.1 m in width and 11.5 m in depth, and the crossing length over the metro tunnel is 150 m.
Read MoreMaximizing regenerative energy utilization is an important way to reduce substation energy consumption in subway systems. Timetable optimization and energy storage systems are two
Read More6.2 Voltage Regulation. In voltage regulation applications, energy storage is used to reduce the level of fluctuation in the traction power system voltage. Trains are normally designed to operate within a given range of voltage. If voltage fluctuates outside this range, train operation can be adversely affected.
Read MoreThis article provides a comprehensive evaluation and comparison of currently available solutions for the recovery and proper management of energy in regenerative braking
Read MoreHowever, there are challenges that must be addressed in order to fully realize the potential of solar energy and traditional photovoltaics [5].These challenges include land usage, intermittency, storage, and integration into existing energy grids. One promising and
Read MoreComparative method is a process of analysing differences and/or similarities betwee two or more objects and/or subjects. Comparative studies are based on research techniques and strategies for drawing inferences about causation and/or association of factors that are similar or different between two or more subjects/objects.
Read MoreThe scheme of funnel angle change is based on advice from subway managers, practical application, and the number of experiments, the angle of funnel shape is 0°, 30°, 45°, 60°, and 90° (90° is a common scenario in Beijing subway station, which is essentially equivalent to an extension of the guardrail). The setting of different funnel
Read MoreThis paper provides a comprehensive review of the maximum power point tracking (MPPT) techniques applied to photovoltaic (PV) power system available until January, 2012. A good number of publications report on different MPPT techniques for a PV system together with implementation. But, confusion lies while selecting a MPPT as
Read MoreLead-acid (LA) batteries. LA batteries are the most popular and oldest electrochemical energy storage device (invented in 1859). It is made up of two electrodes (a metallic sponge lead anode and a lead dioxide as a cathode, as shown in Fig. 34) immersed in an electrolyte made up of 37% sulphuric acid and 63% water.
Read MoreElectrochemical energy storage is the fastest-growing energy storage method in recent years, with advantages such as stable output and no geographical limitations. It mainly includes lithium-ion batteries, lead-acid batteries, flow batteries, etc.
Read MoreWhen the new metro line crosses the existing metro line, its construction stage will have an adverse impact on the existing metro line, that is, settlement. In order to ensure the safety of metro line operation, it is necessary to obtain the variation law of settlement. In this paper, the four different machine learning methods (Radial Basis
Read MoreIt is an exciting time for power systems as there are many ground-breaking changes happening simultaneously. There is a global consensus in increasing the share of renewable energy-based generation in the overall mix, transitioning to a more environmental-friendly transportation with electric vehicles as well as liberalizing the
Read MoreThis paper presents a comparative analysis of energy storage methods for energy systems and complexes. Recommendations are made on the choice of storage technologies for the modern
Read MoreTherefore, the settlement of monitoring points M1-M4 can represent the impact of the new metro on the existing metro. The original settlement-monitoring data from Mar. 19, 2021 to Jan. 19, 2022 is
Read MoreRequest PDF | Comparative Study on the Design Process of a Shallow Subway Station Isfahan Metro, Iran, Based on Risk Assessment | One of the construction methods for shallow subway stations is a
Read MoreThis study focuses on energy storage technologies due to their expected role in liberating the energy sector from fossil fuels and facilitating the penetration of
Read MoreThe subway alleviates the traffic pressure in the city but also brings the potential risk of land subsidence. The land subsidence caused by the subway is a global problem that seriously affects the safety of subway operations and surrounding buildings. Therefore, it is very important to carry out long-term deformation monitoring on the
Read MoreThe thermal power-plant energy return (EROEI el), based on its net electricity output, can be estimated using equation (3) in Methods.Adding CCS introduces operational and capital energy penalties
Read MoreFew studies have focused on the GHG emissions in the construction phase. The system boundary of the construction phase defined by researchers varies. For example, Yan et al. [11] summarized six sources of emissions in the construction phase from existing literature, namely, (1) manufacture of building materials, (2) transportation of
Read MoreThus to account for these intermittencies and to ensure a proper balance between energy generation and demand, energy storage systems (ESSs) are regarded
Read More： This article provides a comprehensive evaluation and comparison of currently available solutions for the recovery and proper management of energy in regenerative braking subway transportation. In this article we compared the
Read More1 INTRODUCTION 1.1 Backgrounds By the end of 2020, metros were available in 193 cities all over the world, responsible for delivering a total of 190 million passengers per day. 1 Especially for China, with a track length of 6280.8 km and a total of 4681 stations nationwide in 2020. 2 However, the energy consumption of metros has
Read MoreDOI: 10.1109/COBEP.2015.7420268 Corpus ID: 31781176 Comparative study of existing methods for improving the energy efficiency of the system traction of subway @article{deSousa2015ComparativeSO, title={Comparative study of
Read MoreHigh surface area of 915 m 2 was found from BET surface area analysis. The electrochemical hydrogen storage studies of these fibres were done at 25 mAg −1 and 3000 mAg −1 in alkaline solution. The discharge capacity was 679 and 585 mA h g −1 at discharge capacity of 25 mAg −1 and 3000 mAg −1 respectively.
Read MoreDOI: 10.1109/COBEP.2015.7420268 Corpus ID: 31781176 Comparative study of existing methods for improving the energy efficiency of the system traction of subway @article{deSousa2015ComparativeSO, title={Comparative study of
Read MoreIn this article we compared the different strategies currently to increase the utilization of regenerated braking energy of trains, such as stationary energy
Read MoreAs the photovoltaic (PV) industry continues to evolve, advancements in comparative study report on subway energy storage methods have become instrumental in optimizing the utilization of renewable energy sources. From innovative battery technologies to smart energy management systems, these solutions are transforming the way we store and distribute solar-generated electricity.
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