Abstract: Pumpturbine characteristics greatly affect the operational stability of pumpedstorage plants. In particular, the Sshaped region of the characteristic curves leads to severe instability during runaway conditions with ...

Abstract: Pumpturbine characteristics are important for designing pumpedstorage plants and indispensable for simulating hydraulic transients, but are often not available in the preliminary design stage. Therefore, constructing a set ...

Abstract: An exponential expression describing the relationship between the amplitude of the blade passing frequency in the vaneless space of a pump turbine operating in the turbine mode and the speed factor is proposed based on ...

Abstract: During the transitional processes of load rejection in a pumpedstorage station, the Sshaped characteristics of the pumpturbines can result in relatively large waterhammer and pulsating pressures. These pressures and the ...

Abstract: During transients, hydroturbines may demonstrate some dynamic characteristics that differ from the corresponding static characteristics in steady operating conditions. To study the dynamic characteristics of a pumpturbine, ...

Abstract: The transient behaviors of a prototype pump turbine are very important to the safe operation of a pumped-storage power plant. This is because the water hammer pressure during transient events affects the pressure surges ...

Abstract: The hydraulic characteristics of pump turbines in off-design conditions, especially the S-shaped characteristics, are crucial for the safety and stability of the unit. To explore the S-characteristics of pump turbines ...

Abstract: An effective boundary potential has been proposed to solve nonperiodic boundary condition (NPBC) of hybrid method. The optimized hybrid method is applied to investigate the influences of the channel height and solid–liquid ...

Abstract: The hydraulic characteristics of pump turbines in off-design conditions, especially the S-shaped characteristics, are crucial for the safety and stability of the unit. To explore the S-characteristics of pump turbines ...

Abstract: Variable speed operation has emerged as a key direction in the development of pumped storage technology. Maintaining pressure pulsation within the control range is particularly critical for ensuring operational safety of ...