Trend Prediction of Vibration Signals for Pumped
In this study, the measured vibration-signal characteristics of pumped-storage units in a strong background-noise environment are obtained using a noise-reduction method that integrates BA-VMD and
Stability and safety study of pumped storage units based on time
The diagnosis of vibration signals of pumped storage units is crucial to the safe and stable operation of the units. In this paper, a fault diagnosis
Numerical simulation study of the effect of mechanical vibration
To fill the research gap in this important topic, a horizontal shell-and-tube six-fin latent heat thermal energy storage unit is investigated in this study, and the effects of
Fault Diagnosis Method of Energy Storage Unit of Circuit
Aiming at the problem of energy storage unit failure in the spring operating mechanism of low voltage circuit breakers (LVCBs). A fault diagnosis algo
Utilize mechanical vibration energy for fast thermal responsive
The liquid-solid phase change materials (PCMs) have attracted increasing attention because they may play an important role in the emerging energy storage industry and
Effects of mechanical vibration on melting characteristics of latent
The phase transition with mechanical vibration was studied by dynamic mesh method. The enhanced mechanism of vibration on heat transfer was revealed. The energy utilization effect
Inverse-time protection method of pumped-storage unit vibration
Vibration protection is a reliable mean for safe operation of rotating machinery. In recent years, vibration protection of pumped storage unit gets mo
Mechanical vibration effects on the melting performance of nano
The combined effects of maximum GNP concentration and high mechanical vibration can reduce the complete melting time by 98.9 %. A significant enhancement (almost
Stability and safety study of pumped storage units based on time
The diagnosis of vibration signals of pumped storage units is crucial to the safe and stable operation of the units. In this paper, a fault diagnosis
Fault Diagnosis of Pumped Storage Units—A
Pumped storage units serve as a crucial support for power systems to adapt to large-scale and high-proportion renewable energy sources by providing a stable and flexible energy supply. However, due to
Hydraulic-mechanical coupling vibration performance of pumped storage
The paper studies the hydraulic-mechanical coupling vibration (HMCV) performance of pumped storage power station (PSPS) with two turbine units sharing
Effects of mechanical vibration on melting characteristics of latent
Abstract Phase change materials (PCM) based thermal energy storage technology is an efficient method to overcome the intermittency and instability of energy
Flow-induced vibration analysis in a pump-turbine runner under
Abstract The dynamic characteristics of the pumped storage unit (pump-turbine runner) make it highly susceptible to vibrations. Previous studies seldom addressed the
Effects of mechanical vibration on the heat transfer performance
Finally, conclusions were drawn about the effect of vibration frequency, vibration amplitude and the inclination angle of the vibration axis on the melting process of PCM in a
Impact of vibration on thermal energy storage performance: A
The recent review delves into exploring the effects of vibration on the behavior of thermal energy storage (TES) systems, with a particular emphasis on phase change materials (PCMs) and
Trend Prediction of Vibration Signals for Pumped-Storage Units
In this study, the measured vibration-signal characteristics of pumped-storage units in a strong background-noise environment are obtained using a noise-reduction method
Research on the Vibration Fault Mechanism of Pumped Storage Units
Combined with the subsequent mechanical vibration characteristics and hydraulic vibration characteristics, the factors that may cause unit vibration were analyzed.
Comparative Analysis of Vibration Characteristics Testing for
The analysis of the vibration test data of the typical pumped storage power station plants showed that the structural vibration spectrum caused by the cascade
Effects of mechanical vibration on melting characteristics of latent
Highlights • The phase transition with mechanical vibration was studied by dynamic mesh method. • The enhanced mechanism of vibration on heat transfer was revealed.
Instability mechanism and vibration performance of a pumped storage
This study aimed to investigate the instability mechanism and vibration performance of a PSPS by considering the coupling effect of the pressurized pipe and pump
Impact of Mechanical Vibration on the Melting of Phase Change
These observations offer helpful direction for developing and improving PCM-based applications that can take advantage of mechanical vibration for improved energy
Numerical simulation study of the effect of mechanical
Citation for published version (Harvard): Wu, Y, Luo, M, Chen, S, Zhou, W, Yu, Y & Zhou, Z , 'Numerical simulation study of the effect of mechanical vibration on heat transfer in a six-fin
Research on the Vibration Characteristics of Pumped Storage Unit
Considering that traditional piezoelectric acceleration sensors (PAS) are difficult to be installed on the stator core surface, this study proposes an online monitoring method based on fiber optic
Impact of vibration on thermal energy storage performance: A
The recent review delves into exploring the effects of vibration on the behavior of thermal energy storage (TES) systems, with a particular emphasis on phase change materials (PCMs) and
Research on the Vibration Characteristics of Pumped Storage Unit
Considering that traditional piezoelectric acceleration sensors (PAS) are difficult to be installed on the stator core surface, this study proposes an online monitoring method based on fiber optic
Stability and safety study of pumped storage units based on time
The diagnosis of vibration signals of pumped storage units is crucial to the safe and stable operation of the units. In this paper, a fault diagnosis
Effects of mechanical vibration on the heat transfer performance
Finally, conclusions were drawn about the effect of vibration frequency, vibration amplitude and the inclination angle of the vibration axis on the melting process of PCM in a
Comprehensive assessment and analysis of cavitation scale
Pumped hydro energy storage is a leading large-scale energy storage technology, effectively mitigating the intermittency and uneven distribution of renewable energy
Heat transfer characteristics of a molten-salt thermal energy storage
There are many LTES units in which the molten salt is encapsulated in the thermal energy storage tank, where the heat transfer characteristic of the LTES unit is very
Enhancing heat transfer efficiency in solar thermal storage
Solar thermal storage systems are pivotal for utilizing clean energy, yet their broader adoption is hindered by the limitations in efficiency and performance of thermal storage
ENERGY | Fault Diagnosis Method of Energy Storage Unit of
Aiming at the problem of energy storage unit failure in the spring operating mechanism of low voltage circuit breakers (LVCBs). A fault diagnosis algorithm based on an
Impact of Mechanical Vibration on the Melting of Phase Change
This study explores the mechanical vibrational effect on the phase change behavior of a Phase Change Material (PCM). A triplex tube energy storage system is
Frontiers | Monitoring technology of hydroturbines in pumped storage
Regarding the monitoring and control technology of pumped storage power stations, the monitoring methods for the operating parameters of the turbines in pumped
Mobile energy recovery and storage: Multiple energy-powered
In this paper, we review recent energy recovery and storage technologies which have a potential for use in EVs, including the on-board waste energy harvesting and
Regulation intensity assessment of pumped storage units in daily
To flexibly consume variable renewable energy (VRE), the pumped storage units are facing severe issues induced by regulation duties (e.g., tear, fatigue, vibrations, etc.). This
Impact of Mechanical Vibration on the Melting of Phase Change
This study explores the mechanical vibrational effect on the phase change behavior of a Phase Change Material (PCM). A triplex tube energy storage system is
Frontiers | Monitoring technology of hydroturbines
Regarding the monitoring and control technology of pumped storage power stations, the monitoring methods for the operating parameters of the turbines in pumped storage power stations were first analyzed,
Regulation intensity assessment of pumped storage units in daily
To flexibly consume variable renewable energy (VRE), the pumped storage units are facing severe issues induced by regulation duties (e.g., tear, fatigue, vibrations, etc.). This
Effect of percussion vibration on solidification of supercooled salt
Experiments are performed on the effect of percussion vibration on triggering solidification of supercooled sodium acetate (CH 3COONa) salt solution in the rounded -
Effects of mechanical vibration on melting behaviour of phase
Mechanical vibration exists in many thermal energy storage systems and thermal management systems. It is well-known that mechanical vibration can enhance heat
Design, modeling, and validation of a 0.5 kWh flywheel energy storage
The speed of the MS-FESS is enhanced to improve the power storage capacity further when friction and vibration are effectively suppressed. The hybrid energy storage unit
Numerical simulation study of the effect of mechanical vibration
The optimization of heat transfer in latent heat thermal energy storage units (LHTES) has received a lot of research during the past decade, and the use of fins to enhance heat transfer in phase
Propagation characteristics analysis of high-frequency vibration in
High-frequency pressure fluctuation is a common hydraulic phenomenon in pumped storage power station (PSPS), which is caused by the rotor-stator interaction in the
The influence of optimization algorithm on the signal prediction
Abstract Pumped storage hydropower units, as a crucial type of energy conversion equipment, play a pivotal role in energy storage and balance. Predicting pressure
Performance analysis and multi-objective optimization of a
Performance analysis and multi-objective optimization of a rotating triple-tube latent heat thermal energy storage unit with V-fin
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