Evaluating the pressure fluctuations during load rejection of two pump-turbines in a prototype pumped-storage system by using 1D-3D coupled simulation
Sign Up to like & getrecommendations! Published in 2021 at "Renewable Energy"
DOI: 10.1016/j.renene.2021.02.114
Abstract: Abstract Load rejection is one of the dangerous transient scenarios in pumped-storage power stations (PSPSs), and the risk should be evaluated from design to operation stages of PSPSs. In this study, the extreme case with… read more here.
Keywords: load rejection; pumped storage; rejection two; pressure ... See more keywords
Simulation and experimental illustration of vibration at load rejection in a continuously overloaded large hydrogenerator
Sign Up to like & getrecommendations! Published in 2020 at "Iet Renewable Power Generation"
DOI: 10.1049/iet-rpg.2019.0847
Abstract: Large hydro generators are usually overloaded at various situations such as the period when excess water is available and when excess inflow is to be discharged. The period may have extended to many weeks under… read more here.
Keywords: load rejection; vibration; experimental illustration; simulation experimental ... See more keywords
Study of Hydraulic Disturbances From Single-Unit Load Rejection in a Pumped-Storage Hydropower Station With a Shared Water Delivery System
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DOI: 10.1109/access.2019.2947301
Abstract: The transient characteristics of load rejection process in pumped-storage hydropower (PSH) stations have a close relation to the safety of electric power system and hydraulic facilities. A large portion of PSHs consist of multiple units… read more here.
Keywords: water; unit; rejection; load rejection ... See more keywords
Load rejection transient with joint closing law of ball-valve and guide vane for two units in pumped storage power station.
Sign Up to like & getrecommendations! Published in 2018 at "Journal of Hydroinformatics"
DOI: 10.2166/hydro.2017.106
Abstract: It is more dangerous for the units sharing the same division pipeline system than those sharing individual system during the load rejection transient for a high water head pumped storage station. A new mathematical model… read more here.
Keywords: load rejection; two units; rejection transient; transient ... See more keywords
Optimization of Pump Turbine Closing Operation to Minimize Water Hammer and Pulsating Pressures During Load Rejection
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DOI: 10.3390/en13041000
Abstract: In load rejection transitional processes in pumped-storage plants (PSPs), the process of closing pump turbines, including guide vane (GVCS) and ball valve closing schemes (BVCS), is crucial for controlling pulsating pressures and water hammer. Extreme… read more here.
Keywords: load rejection; pump; water hammer; rejection ... See more keywords