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Conventional pumped storage units using the synchronous motor, the speed controlled by the governor and guide vane opening. By adjusting the guide vane opening and excitation voltage can adjust the active and reactive powers. As the unit is a synchronous motor, the motor speed is constant, running at the synchronous speed.
A pumped storage unit (PSU) is more difficult to control compared to a conventional hydropower generation unit due to the frequent switching of working conditions …
The speed governor system is known as the key part of the pumped storage unit (PSU) and plays an important role in ensuring its stable operation. ... The simulation parameters of PSGS are …
Variable-speed pumped-storage unit (VSPSU) has become a state-of-the-art technology in pumped-storage industry. It has advantages in rapidity, flexibility, efficiency, and …
Adjustable-speed pumped storage hydropower (AS-PSH) technology has the potential to become a large, consistent contributor to grid stability, enabling increasingly higher penetrations of …
The variable-speed pumped-storage unit (VSPSU) based on doubly-fed induction machine (DFIM) and reversible pump-turbine (RPT) is a new type of pumped-storage unit with …
proposed for the parameter identification of the governing system in a pumped storage unit. The algorithm integrates two key strategies to improve the optimization ability of the algorithm.
When the unit speed deviates from the optimal speed, the efficiency of the turbine will reduce, resulting in deterioration of unit operation. Therefore, in order to improve the unit operation condition, variable-speed pumped storage (VSPS) should be employed.
The peak- Table 1 Parameters of pumped hydro storage station Pumping head, m Generating head, m Max capacity, m 3 Min capacity, m 3 Annualised investment cost, ¥ Monthly O&M …
A total of 15 million kW of pumped storage units will be newly built. Assuming a capacity of 300,000 kW or 350,000 kW, a total of about 45 pumped storage units will be added. Figure 4. …
The model of doubly fed pumped storage unit of 300 MW is established in MATLAB/Simulink and the simulations are presented to verify the proposed control strategy. …
At the beginning of the simulation for 10% power turbulence, the power of the doubly-fed pumped storage unit was − 0.8 pu, the head was 1.0 pu, the rotational speed was 0.945 pu, and the efficiency of the generator was 96%. At 70 s, the power of the unit had changed from − 0.8 to − 0.7 pu.
The installed capacity allocation of the pumped-storage power station in view of the uncertainty is obtained on the basis of deterministic optimization, in which the stochastic scenario is considered where there is a deviation between the actual wind and solar output and the predicted value.
: Parameter identification is an important method to establish the governing system of a pumped storage unit. Appropriate parameters will make the governing system obtain better control …
Variable speed pumped storage unit (VSPSU) is an innovative technology, and investigations regarding operating characteristics of VSPSU are significant. However, there …
The peak- Table 1 Parameters of pumped hydro storage station Pumping head, m Generating head, m Max capacity, m 3 Min capacity, m 3 Annualised investment cost, ¥ Monthly O&M cost, ¥ 275 270 80 ...
Parameter identification is an important method to establish the governing system of a pumped storage unit. Appropriate parameters will make the governing system …
Pumped storage units play an important role in the peak load shifting and primary frequency regulation of a power grid, Moreover, these units are crucial for the safe and stable operation of power grids [ 1 ].
Since doubly-fed induction machine pumped storage hydro (DFIM-PSH) unit can adjust active power flexibly through adjustable-speed operation, it has frequency regulation capability in …
1 INTRODUCTION 1.1 Background. Pumped storage plants (PSPs) play an important role in power systems, 1, 2 such as peak shaving, valley filling, frequency regulation, and phase regulation. 3 Although the …
A doubly-fed pumped storage unit was connected to an infinite power grid. The rated power of the unit is 306.1 MW, its rated head is 425 m, and its rated speed is 428.6 r/min. The characteristic parameters of the pump and turbine system are presented in Table 1, and the characteristic parameters of the DFIG are presented in Table 2.
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