Results 1 to 10 of about 52,940 (196)

Small Disturbance Stability Analysis of Doubly Fed Variable Speed Pumped Storage Units [PDF]

Energies
The variable-speed operation mode of pumped storage units improves the regulation performance and endows the units with characteristics such as isolation from the power grid, thereby affecting the system stability. This study establishes a detailed mathematical model for the connection of doubly fed induction generator-based variable-speed pumped ...
Xiangyang Yu, Chunyang Gao, Hao Qi, Ziming He, Haipeng Nan   +4 more
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Control of the Variable-Speed Pumped Storage Unit-Wind Integrated System [PDF]

Mathematical Problems in Engineering, 2020
The integration of variable-speed pumped storage unit (VS-PSU) guarantees an efficient peak regulation and frequency modulation of the power grid. The present research analyzes the active power flow of the VS-PSU under synchronous, subsynchronous, and supersynchronous speed in both generation and pumping modes.
Yifeng Shi, Xiangjian Shi, Chuanbao Yi, Xufeng Song, Xiaogang Chen   +4 more
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Excitation control of variable speed pumped storage unit for electromechanical transient modeling

Energy Reports, 2022
In this paper, a new excitation control of variable speed pumped storage unit (VSPS) for electromechanical transient modeling is presented. Compared with the traditional VSPS excitation control based on current source, the inner loop control of rotor current is retained.
Shanying Li, Huan Xie, Yian Yan, Tao Wu, Tianxiao Huang, Yinglin Liu, Changyu Li, Hao Liang, Tianzhi Cao   +8 more
openaire   +3 more sources

Simulation of Different Control Strategies in Pumping Mode of Variable-speed Pumped Storage Unit

Journal of Physics: Conference Series, 2023
Abstract Because of the complex structure, the variable-speed pumped storage (VSPS) unit would face more stability problems in operation compared with conventional generators in the power grid. To overcome the shortcomings of the PI controller, the fractional order PI (FOPI) controller is applied for VSPS in pumping mode.
Mengjia Li, Ningqiang Jiang
openaire   +2 more sources

Generalized Predictive Control of Doubly Fed Variable-Speed Pumped Storage Unit [PDF]

Energies
With the increasing penetration of renewable energy, doubly-fed variable speed pumped storage units (DFVSPSUs) are playing an increasingly critical role in grid frequency regulation. However, traditional PI control struggles to address the control challenges posed by the strong nonlinearity of the units and abrupt operational condition changes.
Xiangyang Yu, Qianxi Zhao, Chunyang Gao, Lei Zhang, Yating Wu, Haipeng Nan   +5 more
openaire   +3 more sources

Power-speed coupling response characteristics of variable speed pumped storage unit under pumping mode

International Journal of Electrical Power & Energy Systems
Variable speed pumped storage unit (VSPSU) has the advantage of adjustable power under pumping mode, which can better meet the regulation demand of power grid. This paper aims to study the power-speed coupling response characteristics (CRCs) of VSPSU under pumping mode.
Rui Cao, Wencheng Guo, Chao Wang
openaire   +3 more sources

Research on variable speed operation of static frequency converter for pumped storage units [PDF]

E3S Web of Conferences, 2021
Constant speed pumped storage unit is widely used, however it cannot adjust the input power when working in the electric mode, and cannot work in the best efficiency when the head of the reservoir changes greatly. Therefore, it is necessary to study and develop the variable speed pumped storage systems.
Li Haoyuan, Li Guanjun, Yang Bo, Ji Liantao   +3 more
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Quantifying power regulation characteristics in pump mode of variable‐speed pumped storage unit with DFIM [PDF]

Energy Science & Engineering
AbstractPumped storage plants (PSPs) play an important role in renewable energy consumption in power systems. Variable‐speed technology is a new and critical direction for the development of PSPs. In pump mode, variable‐speed pumped storage units (VSPSUs) have wider power regulation ranges and more flexible power responses than fixed‐speed pumped ...
Yuanhong Liu, Weijia Yang, Jin Yang, Yifan Huang, Zhigao Zhao   +4 more
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Variation law of pressure pulsation during variable speed operation of pumped storage units

IOP Conference Series: Earth and Environmental Science, 2022
Abstract Variable speed operation technology has become an emerging development direction in hydropower industry. Variable-speed pumped storage plants (VSPSPs) constantly undergo various transient processes, and ensuring the amplitude of pressure pulsation within the control range is critical to the safe operation of variable-speed ...
Yulan Li, Weijia Yang, Yifan Huang, Weichao Ma, Zhigao Zhao, Jiebin Yang, Jiandong Yang   +6 more
openaire   +2 more sources

Research on grid-related performance laboratory testing for variable speed pumped storage unit

Journal of Physics: Conference Series
Abstract Variable speed pumped storage unit is an energy storage device with excellent operation and regulation performance. For the grid-related performance laboratory testing of the AC excitation controller of variable speed pumped storage unit integrated into the power grid, this paper studied the methods of grid-related testing of ...
Yian Yan, Shanying Li, Huan Xie, Tao Wu, Tianzhi Cao, Hao Liang, Beihua Liang, Wenqing Lu   +7 more
openaire   +2 more sources