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With the rapid development of large-capacity hydraulic turbines and pumped-storage power stations, hydraulic vibration analysis attracts increasing attention nowadays.
For a gravity hydraulic energy storage system, the energy storage density is low and can be improved using CAES technology . As shown in Fig. 25, Berrada et al. introduced CAES equipment into a gravity hydraulic energy storage system and proposed a GCAHPTS system.
The numerical analysis method of hydraulic vibration is mainly based on the linear theory of oscillatory flow analysis, 5 the simplified motion equation and continuity equation of fluid transients in the pressurized pipeline systems are as follows. Motion equation Continuity equation
Hence, hydraulic compressed air energy storage technology has been proposed, which combines the advantages of pumped storage and compressed air energy storage technologies. This technology offers promising applications and thus has garnered considerable attention in the energy storage field.
To explore the influence of torque and speed variation on hydraulic vibration characteristics during transient processes and ensure the stability of hydropower stations, an improved analytical formula of turbine impedance involving the torque and speed variation was then derived.
In hydraulic vibration theory, the hydraulic impedance is defined as the ratio between the complex oscillatory head and flow rate. Thus, two oscillatory complex variables are merged into a single function as, where l is the pipe length; ZD and ZU are hydraulic impedance at the downstream end and upstream end, respectively.
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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 …
DOI: 10.1016/j.est.2022.105082 Corpus ID: 249859528; Hydraulic-mechanical coupling vibration performance of pumped storage power station with two turbine units sharing one tunnel
A hydraulic–mechanical–electric multi-excitation transient vibration calculation framework is developed for analyzing the relationship between shafting vibration and internal …
Grid-scale, long-duration energy storage has been widely recognized as an important means to address the intermittency of wind and solar power. This Comment …
In this paper, analyses of Francis turbine failures for powerful Pumped Hydraulic Energy Storage (PHES) are conducted. The structure is part of PHES Chaira, Bulgaria (HA4—Hydro-Aggregate 4). The aim of the study is to …
This research aims to assess the massif vibration that results from hydraulic transitions of pumped storage power plant (PSPP) and probe into their consequences on mountain stability. Firstly, numerical simulations of the hydraulic transitions in a pumped storage power plant were carried out, and the pressure pulsations within different sections of the …
The most common large-scale energy storage solution for power systems is pumped-storage power stations. They effectively handle peak shaving and valley filling, provide emergency backup, and manage frequency and phase regulation [2,3]. ... The hydraulic subsystem, partnered with the mechanical subsystem via the governor system, integrated the ...
In the stable operation of the Baishan energy storage power station, the headcover vibrates obviously. To find the cause of vibration, this paper modeled the unit flow …
A lot of research has focused on energy harvesting speed bumps (EHSBs), electric ramps, and small wind harvesters. The conversion mechanism usually adopts rack and pinion mechanism [27][28][29][30 ...
Zhou et al. [26] analysed the free vibration characteristics of pumped storage units in the inverse-S region using the hydraulic impedance method and determined the conditions in which self-excited vibrations of pumped storage units occur. Most previous studies have applied the hydraulic impedance and transfer matrix methods to calculate the complex …
Semantic Scholar extracted view of "Forced vibration analysis model for pumped storage power station based on the 1D–3D coupling and pipe walls vibration" by Xiuwei Yang et al. ... (HFPF) is an extensively observed hydraulic phenomenon in pumped-storage power stations and water conveyance projects. ... The effect of sediment on the hydraulics ...
The invention discloses an intelligent hydraulic vibration reduction electromagnetic energy storage device, which comprises a support module (100), a hydraulic vibration reduction module (200), an energy storage module (300) and a control module (400); the supporting module (100) comprises a lower base plate (101) and an upper base plate (102 ...
The rules of the hydraulic vibration of turbine caused by vortex band were analyzed. The measures of vibration mitigation were stated. ... Journal of Energy Storage, Volume 52, Part C, 2022, Article 105071. Wencheng Guo, Xinyu Xu. Show 3 more articles. About ScienceDirect; Remote access; Shopping cart; Advertise; Contact and support;
In the realm of vibration energy harvesting, EMG devices typically consist of magnets to generate a steady magnetic field and coils to intercept the changing magnetic flux, inducing a current flow. ... such as hydraulic pumps or linear generators. The primary advantage of the oscillating buoy energy capture mechanism is its adaptability to ...
The energy storage way has a board development prospect [2]. The pump-turbine (PT) is a core component in PSP unit. This turbine frequently undergoes various transitions to play the regulatory function in the power grid. ... The high-amplitude PF induce hydraulic vibration of the PSP unit and even cause fatigue of the impeller and penstock, etc ...
the viscosity of the hydraulic oil used. The vibration energy is converted by a damper into acoustic or thermal energy, which is then released into the surroundings. ... an energy-storage element, and a boost converter. The harvester had a regulated 3 V output, so it could be used to power a wireless smart sensor. Casciati and Domaneschi [12 ...
with energy storage, and energy storage is mainly divided into two types: electricity ... The vibration caused by hydraulic pulsation is the main cause of the vibration of the
Transient vibration of shafting in coupled hydraulic-mechanical-electrical- structural system for hydropower station during start-up process ... should be focused on the optimization problems of the hybrid power system (HPS). The battery, as an energy conversion and storage device in the HPS [12], is charging when the power/energy on the supply ...
In the energy storage state, the hydraulic pump rotates to pump water to rotate the hydraulic motor. When the absorbed power exceeds the grid demand, the excess rotating …
1 Introduction. In the context of global energy structure transformation, pumped storage power plants play a crucial role in the power system (Zhang et al., 2024a).As renewable energies such as wind and solar …
The paper studies the hydraulic-mechanical coupling vibration (HMCV) performance of pumped storage power station (PSPS) with two turbine units sharing one …
The hydraulic vibration characteristics in the hydropower system are investigated in this paper, including free vibration analysis and frequency response analysis using the transfer matrix method and hydraulic impedance …
Addressing the vibration control issues of the coupled pumped storage unit-plant structures during transient processes, a coupled hydraulic-mechanical-electrical-structural system model for PSPS is developed, based on the interrelationships between hydraulic, mechanical, and electrical parameters and the vibration of the unit-plant structure.
system is closed-circuit,so the energy storage takes the form of a symmetric, dual-chamberpiston with a spring on the piston ... 17 A Regenerative Approach to Energy Efficient Hydraulic Vibration Control 215 where k A is a linear coefficient for the accumulators and R Qdt is the volumetric charge of the accumulators. The pressure
The invention discloses an intelligent hydraulic vibration reduction electromagnetic energy storage device, which comprises a support module (100), a hydraulic vibration reduction module (200), an energy storage module (300) and a control module (400); the supporting module (100) comprises a lower bottom plate (101) and an upper bottom plate (102), and the hydraulic damping …
A vibratory energy-recycling hydraulic damping system is introduced which includes four vibration dampers, one energy accumulator, one storage tank and some hydraulic components. Vibration damper is composed of nitrogen cavity, piston, piston rod, shell, rebound valve, compression valve, inlet tube, outlet tube and so on. Energy accumulator contains relief …
Based on the research on the unit and geological vibration caused by hydraulic excitation of pumped storage power station, the causes, classification methods and examples …
However, the widely-used eigenvalue analysis, hydraulic vibration analysis, and the Fourier transform methods cannot comprehensively distinguish and quantify the multi-frequency oscillation characteristics of pumped storage power stations. ... [4,5]. The application of energy storage technology is the most effective engineering approach to ...
Request PDF | On Nov 24, 2023, Lu Sun and others published A Review of Hydraulic and Mechanical Vibration Characteristics of Pumped Storage Units | Find, read and cite all the research you need on ...
The excitation force of the plant structural vibration of pumped storage power station mainly comes from hydraulic excitation, which is obviously related to the cascade combination formed by the ...
Hydraulic vibration is a common phenomenon in pumped storage power stations (PSPS) and hydropower plants. Evaluating the performance of the PSPS and water …
Published in Journal of Energy Storage 1 October 2024; Engineering, Environmental Science; View via Publisher. Save to Library Save. Create Alert Alert. Cite. Share. 1 Citation.
The safe and stable operation of hydropower units is the key to realize the effective support of hydropower units to the new power grid. At present, the research on unit vibration mainly focuses on electromagnetic vibration, and there is a lack of systematic review on vibration caused by hydraulic and mechanical factors. Therefore, this paper aims to provide a comprehensive …
Under "dual-carbon" goals and rapid renewable energy growth, increasing start-stop frequency poses new challenges to safe operations of pumped-storage power plant equipment. Ensuring equipment safety and predictive maintenance under complex conditions urgently requires vibration warnings and trend forecasting for pumped-storage units. In this …
Furthermore, preliminary investigation of the stochastic analysis of hydraulic vibration in pressurized pipelines and possible self-excited vibration in pumped-storage systems was presented for ...
Hydraulic vibration is a common phenomenon in pumped storage power stations (PSPS) and hydropower plants. ... (PSPS), one of the most critical regulation devices in the power grid, possesses the ability of energy storage with large-scale and mature technology. 1, 2 With the rapid development of intermittent renewable energy sources, for example ...
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