Capability of synchronous and asynchronous hydropower generating systems: A comprehensive study

K Subramanya, TR Chelliah - Renewable and Sustainable Energy …, 2023 - Elsevier
Hydropower is the third largest supplier of global electricity generation trailing behind coal
and natural gas. It serves as the backbone of low-carbon electricity generation, supplying …

Investigation methods for analysis of transient phenomena concerning design and operation of hydraulic-machine systems—A review

D Li, X Fu, Z Zuo, H Wang, Z Li, S Liu, X Wei - Renewable and Sustainable …, 2019 - Elsevier
Over the past decade, the use of conventional one-dimensional numerical-simulation
methods has been demonstrated to be inadequate in terms of their usefulness in …

Entropy production analysis of hysteresis characteristic of a pump-turbine model

D Li, H Wang, Y Qin, L Han, X Wei, D Qin - Energy Conversion and …, 2017 - Elsevier
The hydraulic loss due to friction and unstable flow patterns in hydro-turbines causes a drop
in their efficiency. The traditional method for analyzing the hydraulic loss is by evaluating the …

A coordinated optimization framework for flexible operation of pumped storage hydropower system: nonlinear modeling, strategy optimization and decision making

Z Zhao, J Yang, W Yang, J Hu, M Chen - Energy Conversion and …, 2019 - Elsevier
Pumped storage hydropower system has now become a key support for integration of
variable renewable energy. Along with the large-scale development of pumped storage …

Adaptive condition predictive-fuzzy PID optimal control of start-up process for pumped storage unit at low head area

Y Xu, Y Zheng, Y Du, W Yang, X Peng, C Li - Energy Conversion and …, 2018 - Elsevier
In order to overcome the rotational speed oscillation under no-load start-up condition
caused by the 'S'characteristic area of the pump-turbine and the difficulty in improving the …

Unstable behaviour of pump-turbines and its effects on power regulation capacity of pumped-hydro energy storage plants

G Cavazzini, JB Houdeline, G Pavesi, O Teller… - … and Sustainable Energy …, 2018 - Elsevier
Intermittent renewable energy sources are characterized by a highly fluctuating,
unpredictable and delocalized energy production, which significantly limits their penetration …

Numerical simulation of hysteresis characteristic in the hump region of a pump-turbine model

D Li, H Wang, Y Qin, X Wei, D Qin - Renewable energy, 2018 - Elsevier
Pumped-storage technology is one of the cleanest methods of energy conversion. The
stable and safe operation of pump-turbines as key parts of pumped-storage power plants …

Flexibility enhancement versus thermal efficiency of coal-fired power units during the condensate throttling processes

K Zhang, Y Zhao, M Liu, L Gao, Y Fu, J Yan - Energy, 2021 - Elsevier
The improvement in operational flexibility of thermal power plants plays an essential role in
the stable and safe operation of large-scale power grids. Condensate throttling is an …

Experimental investigation on pressure fluctuation characteristics of a mixed-flow pump as turbine at turbine and runaway conditions

W Wang, G Tai, J Shen, J Pei, S Yuan - Journal of Energy Storage, 2022 - Elsevier
The pump as turbine (PAT) converts water energy into electricity energy, which greatly
accelerates the construction of new power system. However, in the actual use of pump as …

Improving internal fluid stability of pump turbine in load rejection process by co-adjusting inlet valve and guide vane

X Mao, X Chen, J Lu, P Liu, Z Zhang - Journal of Energy Storage, 2022 - Elsevier
Pumped storage plant (PSP) is a high efficient emission-free technology to balance the
unstable electricity generation from renewable energy. In order to meet the variable …