Robust decentralized model predictive load-frequency control design for time-delay renewable power systems
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Gaber Magdy
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Abualkasim Bakeer
Abstract
A robust decentralized model predictive control (DMPC) design is proposed for frequency stability of hybrid renewable power systems considering high renewables energy penetration and nonlinearity effects. The Egyptian power system (EPS) considered as a test system comprises both traditional power stations (i.e., steam, gas, combined cycle, and hydraulic power plants) and renewable energy sources (RESs). Where the considered RESs contain both the wind power generated from Zafarana and Gabel El-Zeit wind farms and the solar power generated from Benban solar park, which is considered one of the world’s largest photovoltaic (PV) plants. To obtain an accurate insight into a real modern power system, this research takes into account the effects of the important nonlinearity such as generation rate constraints (GRCs), governor deadband (GDB), and communication time delay (CTD). The designed control is set based on the DMPC for each subsystem independently to ensure the frequency stability of the whole system as each subsystem has different characteristics and operating constraints than the others. Moreover, the decentralized control scheme has become imperative for large power systems due to the high cost of transmitting data over long distances and the probability of error occurrence with the centralized control scheme. To verify the effectiveness and robustness of the proposed DMPC for the EPS, it is compared with the centralized MPC (CMPC) scheme in different operating conditions. The simulation results, which are conducted using MATLAB/SIMULINK® software, emphasized that the proposed DMPC scheme can effectively handle several load disturbances, high uncertainty in the system parameters, and random communication delays. Hence, it can regulate the grid frequency and ensure the robust performance of the studied renewable power system with high RESs penetration and maximum communication delays in the system.
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Author contributions: All the authors have accepted responsibility for the entire content of this submitted manuscript and approved submission.
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Research funding: None declared.
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Conflict of interest statement: The authors declare that there is no conflict of interest.
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© 2021 Walter de Gruyter GmbH, Berlin/Boston
Articles in the same Issue
- Frontmatter
- Research Articles
- Differential positive sequence power angle-based microgrid feeder protection
- Real-time hardware emulation of wind turbine model with asynchronous generator under hardware-in-the-loop platform
- Frequency stability analysis with fuzzy adaptive selfish herd optimization based optimal sliding mode controller for microgrids
- Seamless control of grid-tied PV-Hybrid Energy Storage System
- Improved higher order adaptive sliding mode control for increased efficiency of grid connected hybrid systems
- Optimal siting of solar based distributed generation (DG) in distribution system for constant power load model
- Electricity demand modeling techniques for hybrid solar PV system
- Robust decentralized model predictive load-frequency control design for time-delay renewable power systems
- A techno-economic analysis of the roof top off-grid solar PV system for Jamshedpur, Jharkhand, India
Articles in the same Issue
- Frontmatter
- Research Articles
- Differential positive sequence power angle-based microgrid feeder protection
- Real-time hardware emulation of wind turbine model with asynchronous generator under hardware-in-the-loop platform
- Frequency stability analysis with fuzzy adaptive selfish herd optimization based optimal sliding mode controller for microgrids
- Seamless control of grid-tied PV-Hybrid Energy Storage System
- Improved higher order adaptive sliding mode control for increased efficiency of grid connected hybrid systems
- Optimal siting of solar based distributed generation (DG) in distribution system for constant power load model
- Electricity demand modeling techniques for hybrid solar PV system
- Robust decentralized model predictive load-frequency control design for time-delay renewable power systems
- A techno-economic analysis of the roof top off-grid solar PV system for Jamshedpur, Jharkhand, India
