Pumped-storage can quickly and flexibly respond to adjust the grid fluctuation and keep the grid stability because of its various functions. Besides, it is an effective power storing tool and now ...
In , a joint peak-shaving strategy for wind-photovoltaic and pumped storage was proposed, concluding that when the installed capacity of pumped storage is close to that of wind and photovoltaic power, the system can effectively track the load curve by optimizing the output and start-up methods of pumped storage.
To increase the proportion of new energy in the power grid, the mature and flexible start-stop technology of pumped storage has developed rapidly . Currently, there is extensive research on the joint scheduling of wind-photovoltaic systems and conventional pumped storage.
In either of the vector control schemes, varieties of modified strategies based on the generic scheme have been developed and implemented in the application of DFIM-based pumped storage system to ensure incremental improvement of system performances [1 - 11, 14, 17, 20 - 28, 33, 36, 38 - 41].
Pumped storage is one of the feasible and effective ways to build a flexible power supply system. The core is to improve the quality and reliability of power grid operation by peak shaving, valley filling, standby, frequency modulation and phase modulation.
It also provides information on the existing global capacities, technological development, topologies and control strategies of the pumped-storage system. This report also outlines the analysis of dynamic performances of the system. It also attempts to recommend the future works in this area.
There are two different working conditions for pumped storage power plants: power generation and pumping. When the power generated by the system is greater than the user's demand, the pumped storage power station will pump water from the downstream reservoir to the upstream reservoir for energy storage.
Pumped-storage can quickly and flexibly respond to adjust the grid fluctuation and keep the grid stability because of its various functions. Besides, it is an effective power storing tool and now ...
This study presents state-of-the-art pumped energy storage system technology and its AC–DC interface topology, modelling, simulation and control analysis. It also provides information on the existing global capacities, technological development, topologies and control strategies of the pumped-storage system. This report also outlines the ...
This method is applied to the survey of karst leakage in the lower reservoir of a pumped storage power station in Guizhou Province, field data fusion analysis shows that there is an abnormal seepage field in the anti-seepage curtain line of the site, and there is good evidence for the temperature and conductivity field data. There is ...
This paper proposes a wind -pumped storage-hydrogen storage combined operation system based on deep learning and intelligent optimization, which introduces deep neural network to predict wind power generation.
In this paper, a novel method to determinate the round trip energy efficiency in pumped storage hydropower plants with underground lower reservoir is presented. Two Francis pump-turbines with a power output of 124.9 and 214.7 MW (turbine) and a power input of 114.8 and 199.7 MW (pump), respectively, have been selected to investigate the overall operation of …
Therefore, we propose a machine learning (ML)-based model predictive control (MPC) method. The ML algorithm is based on Koopman theory and experimental data that includes PSS state …
The analysis method based on steady flow theory usually obeys the following assumptions: (1) the surrounding rock is an isotropic continuous porous medium; (2) the …
The non-linear characteristics among the influencing factors are obvious. In this paper, the support vector machine (SVM) is used to establish the prediction analysis model of pumped-hydro storage installed capacity, which is commonly used in machine learning methods. Meanwhile, this model combines the characteristics of different stages of new ...
This study presents state-of-the-art pumped energy storage system technology and its AC–DC interface topology, modelling, simulation and control analysis. It also provides …
Pumped storage plants are increasingly developing to cope with the rapid growth of renewable energy production. Micro-pumped storage (MPS) system is a new storage strategy for distributed energy integration. Centrifugal pump or axial pump replaces conventional pump turbines in this pumped storage system to ensure economic convenience ...
Mathematical Modeling and Parameter Sensitivity Analysis Method of Doubly-Fed Variable Speed Pumped Storage Units In the field of automatic control, we often use the state space method to analyze
This paper takes pumped storage investment cost and wind power consumption demand as the optimization goal, realizes the coordinated operation of pumped storage units …
This review aims to provide a comprehensive analysis of pumped hydro storage (PHS) systems, addressing various aspects of their design, operation, and impacts across differ ent scales.
This method is applied to the survey of karst leakage in the lower reservoir of a pumped storage power station in Guizhou Province, field data fusion analysis shows that there …
Therefore, we propose a machine learning (ML)-based model predictive control (MPC) method. The ML algorithm is based on Koopman theory and experimental data that includes PSS state variables, and is used to establish linear relationships between the variables in …
This paper firstly analyses the structure of the fullpower pumped storage unit, then builds the basic model of a power station full-power variable-speed pumped storage unit in a Simulink …
The analysis method based on steady flow theory usually obeys the following assumptions: (1) the surrounding rock is an isotropic continuous porous medium; (2) the seepage meets Darcy''s law; and (3) the stress field of the surrounding rock and coupling effect between the seepage field and the stress field are not considered (Fang et al. 2007).
In response to the problem of the curtailment of wind and photovoltaic power caused by large-scale new energy grid connection, an optimized control method of wind-photovoltaic-hybrid pumped storage based on multi-scenario sharing is proposed in this paper, considering both load tracking and auxiliary services scenarios.
This paper proposes a wind -pumped storage-hydrogen storage combined operation system based on deep learning and intelligent optimization, which introduces deep …
Pumped storage plants are increasingly developing to cope with the rapid growth of renewable energy production. Micro-pumped storage (MPS) system is a new storage …
Seepage analysis of the upper reservoir of the Kurdistan Azad pumped storage dam with a volume of 3.8E+5 m3 is a key step for selection of the optimized sealing method. More than 60% of the Lugeon test results show very permeable behavior for the pit and abutments of the reservoir. In this study, regarding the permeability value of the reservoir abutments and pit …
DOI: 10.1016/j.est.2020.101234 Corpus ID: 214069571; Efficiency analysis of underground pumped storage hydropower plants @article{Menndez2020EfficiencyAO, title={Efficiency analysis of underground pumped storage hydropower plants}, author={Javier Men{''e}ndez and Jes{''u}s Manuel Fern{''a}ndez-Oro and M{''o}nica Galdo and Jorge Loredo}, journal={Journal of energy …
The multi index field analysis method has become a commonly used research method in exploring engineering and environmental research such as reservoir leakage, groundwater …
Research on Identification of Deep Leakage Channels in Karst Pumped Storage Reservoirs Based on Multi Field Data Fusion Zheng Kexun1,2, Gan Feifei1,2(B), Zhao Daiyao1,2, Chen Xiao1,2, Liu Xianggang1,2, and Zhang Ning1,2 1 Powerchina Guiyang Engineering Corporation Limited, Guiyang 550081, Guizhou, China 2294153304@qq 2 Geotechnical Engineering …
This paper firstly analyses the structure of the fullpower pumped storage unit, then builds the basic model of a power station full-power variable-speed pumped storage unit in a Simulink simulation environment, proposes the start-up debugging method, and verifies the validity of the control strategy and debugging method.
This paper takes pumped storage investment cost and wind power consumption demand as the optimization goal, realizes the coordinated operation of pumped storage units and thermal power units, and considers the uncertainty of wind power and load, the multi-timescale characteristics of different types of units and load demand response ...
Due to the proposal of China''s carbon neutrality target, the traditional fossil energy industry continues to decline, and the proportion of new energy continues to increase. New energy power systems have high requirements for peak shaving and energy storage, but China''s current energy storage facilities are seriously insufficient in number and scale. The …
In response to the problem of the curtailment of wind and photovoltaic power caused by large-scale new energy grid connection, an optimized control method of wind …
Small and medium-sized pumped storage power station is the collective name of medium and small pumped storage power station, which refers to the pumped storage power station with a total storage capacity of less than 100 million cubic meters in the reservoir area and an installed capacity of less than 300,000 kW, and the approval and construction time of such …
The multi index field analysis method has become a commonly used research method in exploring engineering and environmental research such as reservoir leakage, groundwater pollution, and underground cave water inrush investigation and treatment
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