A chaos game optimization algorithm-based optimal control strategy for performance enhancement of offshore wind farms

Shaheen, Mohamed A.M.; Hasanien, Hany M.; Mekhamer, S.F.; Talaat, Hossam E.A.

doi:10.1016/j.ref.2024.100578

Renewable Energy Focus

2024

DOI: 10.1016/j.ref.2024.100578

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A chaos game optimization algorithm-based optimal control strategy for performance enhancement of offshore wind farms

Mohamed A.M. Shaheen,

Hany M. Hasanien,

S.F. Mekhamer

et al.

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2024

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Cited by 2 publications

References 47 publications

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Walrus optimizer-based optimal fractional order PID control for performance enhancement of offshore wind farms

Shaheen,

Hasanien,

Mekhamer

et al. 2024

Sci Rep

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Offshore wind farms (OWFs) play a crucial role in producing renewable energy in modern electrical power systems. However, to ensure that these facilities operate smoothly, they require robust control systems. As a result, this paper employed the newly developed Walrus Optimization algorithm (WaOA) to optimize the design parameters of fractional-order proportional-integral-derivative (FOPID) controllers in the power electronic interface circuits of the studied wind energy conversion system (WECS). In contrast to conventional optimization techniques like GA and PSO, the suggested approach proves more effective. The paper validates the WaOA application in optimizing FOPID controllers within a WECS comprising two, onshore and offshore, VSC stations at the two ends of an HVDC transmission system connecting OWFs to the mainland. The study shows that the WaOA outperforms GA and PSO, improving system stability and enabling quick recovery after disturbances. The study carried out using MATLAB/Simulink highlights the significance of newly recently introduced optimization techniques to ensure efficient and reliable operation of offshore wind energy systems, thereby expediting the transition to sustainable energy sources.

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Walrus optimizer-based optimal fractional order PID control for performance enhancement of offshore wind farms

Shaheen,

Hasanien,

Mekhamer

et al. 2024

Sci Rep

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Reduced Order Generalized Integrator Based Modular Multilevel Converter Loop Current Suppression Strategy under Unbalanced Conditions in Distribution Networks

Wang,

Zeng,

Song

2024

Energies

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Under the condition of grid voltage imbalance, the circulation of the bridge arm inside the modular multilevel converter (MMC) increases significantly, which leads to the aggravation of the distortion of the bridge arm current, and, thus, increases the system loss and reduces the power quality. To address this problem, this paper analyzes the mechanism of circulating current generation and proposes a circulating current suppression strategy based on a reduced-order generalized integrator (ROGI), which firstly uses the ROGI system to separate the second-harmonic positive- and negative-sequence components in the circulating current from the DC, and then converts the rotating coordinates of the circulating current’s second octave component into the DC to be fed into the proportional–integral quasi-resonance (PIR) controller for suppression. A simulation model of a 23-level MMC inverter is built in MATLAB/Simulink, and the control strategy proposed in this paper is compared with the classical proportional–integral (PI) control in simulation experiments. The simulation results show that the amplitude of the circulating current fluctuation of the classical PI control is reduced from 90 A to 22 A, and the harmonic distortion rate of the bridge arm current is reduced from 32.56% to 5.57%; the amplitude of the circulating current fluctuation of the control strategy proposed in this paper is reduced from 90 A to 5.7 A, and the harmonic distortion rate of the bridge arm current is reduced from 20.2% to 1.13%, which verifies the effectiveness of the pro-posed control strategy.

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A chaos game optimization algorithm-based optimal control strategy for performance enhancement of offshore wind farms

Cited by 2 publications

References 47 publications

Walrus optimizer-based optimal fractional order PID control for performance enhancement of offshore wind farms

Walrus optimizer-based optimal fractional order PID control for performance enhancement of offshore wind farms

Reduced Order Generalized Integrator Based Modular Multilevel Converter Loop Current Suppression Strategy under Unbalanced Conditions in Distribution Networks

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