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parameter setting specifications for pumped storage units
(PDF) Parameter Identification of a Governing System
To solve the security. and stability of clean energy entering the power grid on a large scale [. 1. ]. Currently, the pumped storage power stations built or being built in China are developing in
The influence of optimization algorithm on the signal prediction accuracy of VMD-LSTM for the pumped storage hydropower unit
Based on previous research results [28, 29], the parameter k for decomposing pressure pulsation signals using VMD is typically set to 6 or 7, while α usually stabilizes around 2000. Therefore, the selection of VMD decomposition parameters is not the focus of this study.
Controller Optimization Approach Using LSTM-Based Identification Model for Pumped-Storage Units
In this paper, the controller optimization problem of the pumped-storage unit (PSU) was examined. The objectives of this paper were to identify the dynamic model of the PSU according to the deep learning model through training of the input-output data and to optimize the parameters of the controller on the basis of this identified model. To
A combined multi-objective optimization model for degradation trend prediction of pumped storage unit
The harsh operating environment aggravates the degradation of pumped storage units (PSUs). Degradation trend prediction (DTP) provides important support for the condition-based maintenance of PSUs.
Unit Protection System for Pumped-Storage Power Stations
Siemens PTD EA · Applications for SIPROTEC Protection Relays · 2005 1 Generator Protection 1. Introduction In many power systems, pumped-storage power stations are used in addition to run-of-river power stations. These power stations serve primarily to
Research on Control Parameter Setting Method of AC Excitation System of Variable Speed Pumped Storage Unit
This work focuses on the converter control links of variable speed pumped storage unit, proposed the principle of dynamic correction for AC excitation system of variable speed pumped storage unit, based on the dynamic correction method widely used in synchronous generator. According to the best second order parameter rule, the parameter setting
Research on Simplified Tuning of PSS Parameters of Pumped Storage Units
With the advancement of the construction of new power systems, pumped storage units play an increasingly important role in the safe and stable operation of the power grid and the promotion of renewable energy consumption. The pumped storage unit is different from the ordinary generator set, and there are power generation conditions and pump conditions.
Quantifying power regulation characteristics in pump mode of variable‐speed pumped storage unit
Quantification results show that parameter tuning based on this study effectively solves the problem of low regulation rate caused by great power fluctuations under typical power regulation cases in pump mode. This VSPSU has the fastest regulation rate of 13.75%/s when adjusting 40% power.
An Integrated Start-Up Method for Pumped Storage Units Based
PSU start-up usually refers to the process of unit starting in turbine mode. This process begins at the time the guide vane is beginning to move and ends at the time the unit connects to the grid. PSU start-up is a complex control problem. Multiple control models exist in start-up processes.
(PDF) Numerical simulation of transient processes for pumped-storage power station with fixed and variable speed units
The pumped-storage power stations (PSPSs) with variable speed units (VSUs) have been emerging in recent years, and the research on the transient processes of those PSPSs is of great significance.
Ancillary service quantitative evaluation for primary frequency
In this paper, a quantitative evaluation method for PFR performance of pumped storage units (PSUs) is constructed based on fuzzy analytic hierarchy process
A new setting criterion of tailrace surge chambers for pumped-storage
The mathematical model was validated through five large PSPPs with long tailrace tunnels in China, including high, medium and low water heads and ranging from 100 m to 500 m. The basic design parameters of these PSPPs are listed in Table 1.H r, Q r, n r and N r represent the rated parameters of a single unit; T Z, T S and σ are obtained by
Water | Free Full-Text | Fractional-PID and Its Parameter
Considering the frequent operating condition transitions and the complicated nonlinear dynamic characteristics of the pumped storage units, the
Stability analysis and singular perturbation model reduction of DFIG-based variable-speed pumped storage unit
Compared with the traditional fixed-speed pumped storage unit (FSPSU), the VSPSU can contribute additional flexibility to the grid by providing a range of beneficial ancillary services [13, 14]. In 1995, the VSPSU of Okawachi power station in Japan absorbed random power disturbances during an earthquake, significantly improving the
An Integrated Start-Up Method for Pumped Storage Units Based on a Novel Artificial Sheep Algorithm
Keywords: pumped storage unit; artificial sheep algorithm; start-up strategy; parameter optimization; meta parameters of GVO trajectory in the open-loop DGVC are difficult to set, which are
A nonlinear generalized predictive control for pumped storage unit
Compared with the distributed-parameter characteristic-line method, ECM is a lumped-parameter model but precisely models each component in the hydraulic system based on the circuit theory. As for
Research on Simplified Tuning of PSS Parameters of Pumped
Based on the symmetry difference of the angular stability analysis, it is concluded that the PSS parameters of the pumped-storage unit can be simplified under the two working
Pumped Storage Systems
conventional losses is typically. hydro. 70% and by pumping power. plants, pumped storage plants are net consumers of energy due to the electric and hydraulic incurred water to the upper reservoir. The cycle, or round-trip, efficiency of a pumped storage plant between 80%. Pumped Storage Technology 7.
Energies | Free Full-Text | An Integrated Start-Up Method for Pumped Storage Units
By setting the unit parameters N 11 ~Q 11 and N 11 ~M 11 as a cross-ordinate, a series of two-dimensional curves could be built to describe the complete characteristics of a pump turbine. While setting the gate opening y as reference variable, the flow characteristic curves and the torque characteristic curves of the complete characteristics could be
Hydraulic-mechanical-electrical coupled model framework of
This framework provides a reliable model foundation for the optimization of the hydraulic system layout, operation strategy formulation, and dynamic response
Design of type-2 fuzzy fractional-order proportional-integral-derivative controller and multi-objective parameter
To obtain a good dynamic response in the control system of the pumped storage unit, the controller parameters of the governor are optimized by the multi-objective optimization algorithm. Therefore, MOGSA is selected to optimize the controller parameters of PID controller, Fractional Order PID controller, and type-2 fuzzy Fractional Order PID
Liying Wang, Luyao Zhang, Weiguo Zhao * and Xiyuan Liu
pumped storage unit. Appropriate parameters will make the governing system obtain better control performance The AHA first initialization a set of random solutions and a visit table. In each
Control optimisation for pumped storage unit in micro‐grid with
However, with the introduction of those additional parameters, the borders of fuzzy membership functions can be set separately and turn into two parameters of the proposed controller. Combining with the intelligent optimiser, the introduction of and makes the fuzzy PID controller more flexible and suitable for different circumstances.
Environmental and economic scheduling for wind-pumped storage
The operational decision-making of pumped storage units is designed from the viewpoint of giving full play to the regulation performance of pumped storage and enhancing wind power accommodation. 2) The wind-pumped storage-thermal generation is arranged according to the principle of energy-saving power generation scheduling,
Active Disturbance Rejection Control for AC Excitation System of Variable Speed Pumped Storage Units
Li et al. proposed a second-order ADRC and AC excitation control system based on stator flux oriented control to control the active and reactive power of the variable-speed pumped storage unit [5, 6].
(PDF) Controller Optimization Approach Using
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 performance.
Parameters-setting method for synchronization of pumped
This paper presents a parameters-setting method for the synchronization of pumped-storage units under the pumping condition. The synchronizing process of
Parameters-setting method for synchronization of pumped storage units
This paper presents a parameters-setting method for the synchronization of pumped-storage units under the pumping condition. The synchronizing process of the units is analyzed and the synchronizing parameters-setting principle of generating units is referred. Finally, the method is educed through mathematical formula derivation. Under
Parameters-setting method for synchronization of pumped
The parameters-setting method in this paper provides the theoretical foundation for synchronizing parameters setting of pumped storage unit. It is significant
Hydraulic-mechanical-electrical coupled model framework of variable-speed pumped storage
Hopf bifurcation and parameter sensitivity analysis of a doubly-fed variable-speed pumped storage unit Energies, 15 ( 1 ) ( 2022 ), 10.3390/en15010204 Google Scholar
Parameter optimization decision framework for transient process of a pumped storage
This paper innovatively proposes a parameter optimization decision framework for PSHS, qualitatively and quantitatively analyzes the influence of system structure parameters and hydraulic parameters on
Parameters-setting Method for Synchronization of Pumped Storage Units
Semantic Scholar extracted view of "Parameters-setting Method for Synchronization of Pumped Storage Units under Pumping Condition" by et al. Skip to search form Skip to main content Skip to account menu Semantic Scholar''s Logo Search 217,795,808
