Results 21 to 30 of about 23,232 (306)

Optimal Peer-to-Peer Energy Sharing Between Prosumers Using Hydrokinetic, Diesel Generator and Pumped Hydro Storage [PDF]

open access: yes, 2019
Published ArticleIn this paper, an optimal Peer-to-Peer energy sharing model between two small prosumers is developed and simulated in the south African context.
Kusakana, Kanzumba
core   +1 more source

Experimental Study on Surface Protection of Concrete Panel in Reservoir Basin of Pumped Storage Power Station in Cold Region [PDF]

open access: yesE3S Web of Conferences, 2019
Affected by various unfavorable factors during construction and operation,concrete panels of pumped storage power stationsin cold regions are prone to cracks, freeze-thaw erosion and other defects, which reduce the impermeabilityand durability of ...
Zhang Yi, Li Meng, Sun Zhiheng, Zhai Jie
doaj   +1 more source

Structural characteristics analysis of extra–high–head pump–turbine-unit under extreme-pressure working-conditions [PDF]

open access: yesE3S Web of Conferences
During transient processes in extra–high–head pumped–storage power plants, the prototype pump–turbine-units must be able to withstand sudden changes in water pressure within the delivery system.
Huang Xiaoying   +5 more
doaj   +1 more source

Flow characteristics analysis of an extra–high–head pump–turbine with splitter–blades under high pressure-pulsation condition [PDF]

open access: yesE3S Web of Conferences
The new energy system aims to provide reliable, affordable and sustainable energy, and ultimately achieve carbon neutrality. But the unstable renewable energy sources including wind and solar increase the risk to the grid and the power system. The pumped–
Huang Xingxing   +5 more
doaj   +1 more source

Comparative Study on Numerical Calculation of Modal Characteristics of Pump-Turbine Shaft System

open access: yesJournal of Marine Science and Engineering, 2023
Because a pump-turbine mainly undertakes the role of energy conversion and pumped storage in the field of hydropower engineering, the complex transition process and frequent conversion between different working conditions lead to the increase in the ...
Xuyang Liu   +7 more
doaj   +1 more source

Analysis of the impact of construction and operation of pumped-storage power stations on grid companies and the formulation of electricity prices [PDF]

open access: yesMATEC Web of Conferences, 2021
The pumped storage power station is flexible to start, can realize effective storage of electric energy, and has superior peak and frequency modulation effects, which is beneficial to provide comprehensive benefits of the power system.
Gao Ming   +4 more
doaj   +1 more source

Research on an intelligent monitoring system for the entire tunnel construction process based on IoT and digital twin

open access: yesInternational Journal of Metrology and Quality Engineering
There are high-risk problems, such as peripheral rock instability and palm face collapse, during tunnel construction, and the traditional monitoring methods are difficult to meet the safety management needs due to sparse data and lagging response.
Huang Canxin   +5 more
doaj   +1 more source

Repair Technology for Joint Damage of Sealing Cover Plate of Concrete Faced Rockfill Dam [PDF]

open access: yesE3S Web of Conferences, 2019
In view of damages that are common in anti-seepage coiled joints used in the water-sealing of the concrete faced rockfill dam junction surface, the construction method that uses SK hand scraping polyurea and tire base fabric to quickly repair the broken ...
Cui Zhigang   +3 more
doaj   +1 more source

Analysis of Internal Flow Characteristics of a Startup Pump Turbine at the Lowest Head under No-Load Conditions

open access: yesJournal of Marine Science and Engineering, 2021
The instability of the no-load working condition of the pump turbine directly affects the grid connection of the unit, and will cause vibration and damage to the components of the unit in severe cases.
Wei Wang   +4 more
doaj   +1 more source

Effect of the Diameter of Pressure-Balance Pipe on Axial Hydraulic Thrust

open access: yesJournal of Marine Science and Engineering, 2021
The axial hydraulic thrust has great influence on the safety and stability of a pump turbine. A common way to balance hydraulic thrust is to install a pressure-balance pipe, and the change in pipe diameter is one of the important factors affecting axial ...
Fei Zhang   +3 more
doaj   +1 more source

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