A Sub-Synchronous Oscillation Suppression Strategy Based on Active Disturbance Rejection Control for Renewable Energy Integration System via MMC-HVDC

Chao, Wujie; Deng, Chaoping; Huang, Junwei; Dai, Liyu; Min, Yangxi; Cheng, Yiming; Wang, Yuhong; Liao, Jianquan

doi:10.3390/electronics12132885

Cited by 5 publications

(3 citation statements)

References 30 publications

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“…It has been established that the mitigation of the SSOs is achievable through the appropriate design of LCC control. Furthermore, a similar analysis has also been observed in voltage source converter (VSC) and multi-modular converter (MMC)-based HVDC systems [9,10]. Recently, SSOs have been observed in the U.S, Australia, and Scotland [11].…”

Section: Introductionsupporting

confidence: 59%

Stability Analysis via Impedance Modelling of a Real-World Wind Generation System with AC Collector and LCC-Based HVDC Transmission Grid

Arshad,

Beik,

Manzoor

et al. 2024

Electronics

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This paper studies the stability of a real-world wind farm, Bison Wind Generation System (BWGS) in the state of North Dakota in the United States. BWGS uses an AC collector grid rated at 34.5 kV and a symmetrical bipolar high-voltage DC (HVDC) transmission grid rated at ±250 kV. The HVDC line transfers a total power of 0.5 GW, while both the HVDC rectifier and inverter substations use line-commuted converters (LCCs). The LCC-based rectifier adopts constant DC current control to regulate HVDC current, while the inverter operates in constant extinction angle control mode to maintain a fixed HVDC voltage. This paper proposes a frequency scan-based approach to obtain the d–q impedance model of (i) BWGS AC collector grids with Type 4 wind turbines that use permanent magnet synchronous generators (PMSGs) and two fully rated converters, and (ii) an LCC-HVDC system. The impedance frequency response of the BWGS is acquired by exciting the AC collector grid and LCC-HVDC with multi-sine voltage perturbations during its steady-state operation. The resulting voltage and current signals are subjected to a fast Fourier transform (FFT) to extract frequency components. By analyzing the impedance frequency response measurement of BWGS, a linear time–invariant (LTI) representation of its dynamics is obtained using the vector fitting (VF) technique. Finally, a Bode plot is applied, considering the impedance of the BWGS and grid to perform stability analyses. This study examines the influence of the short circuit ratio (SCR) of the grid and the phase lock loop (PLL) frequency bandwidth on the stability of the overall system. The findings provide valuable insights for the design and verification of an AC collector and LCC-based HVDC transmission systems. The findings suggest that the extraction of the impedance model of a real-world wind farm, achieved through frequency scanning and subsequent representation as an LTI system using VF, is regarded as a robust, suitable, and accurate methodology for investigating the dynamics, unstable operating conditions, and control interaction of the wind farm and LCC-HVDC system with the AC grid.

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Section: Introductionsupporting

confidence: 59%

Stability Analysis via Impedance Modelling of a Real-World Wind Generation System with AC Collector and LCC-Based HVDC Transmission Grid

Arshad,

Beik,

Manzoor

et al. 2024

Electronics

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“…The establishment of this theoretical basis not only helps to enhance the grid-connected stability of renewable energy but also helps to promote the optimization and upgrading of the entire energy system. It offers a fresh viewpoint and methodology for future research and facilitates the continued advancement and use of innovative energy technology [21].…”

Section: Introductionmentioning

confidence: 99%

Research on Sub-Synchronous-Oscillation Energy Analysis and Traceability Method Based on Refined Energy

Zhang,

Yang,

Zhou

et al. 2024

Energies

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At present, most studies use the direct method to analyze the oscillation problem of modern power systems. However, these studies often only simplify the external characteristics of the wind turbine and lack an in-depth understanding of its internal refined energy structure. In this paper, based on the direct-drive permanent magnetic synchronous generator’s detailed model (D-PMSG), combined with the dynamic energy of its port, layers of analysis are performed on the wind turbine’s internal connections, and a detailed model of the energy structure is created. Then, the interaction mechanism of each control link in the wind turbine is analyzed by combining the energy function of the wind turbine with the improved perturbation method. Finally, this paper constructs a sub-synchronous oscillation (SSO) scenario of weak damping and a forcing type and proves the accuracy and effectiveness of the traceability method based on the refined energy of D-PMSG. This traceability method based on refined energy is expected to provide a new solution to the stability problem caused by the integration of new energy.

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“…Many studies have been performed on the detection technology and control methods of renewable energy systems in unbalanced environments [8][9][10]. Based on the DPMSGbased WPS model, the key parameters affecting the stability of the power system are studied [11]. A model predictive controller design method is proposed for Maximum Power Point Tracking (MPPT) systems based on the DPMSG [12].…”

Section: Introductionmentioning

confidence: 99%

Disturbance-Suppression Method of Direct-Driven PMSG-Based Wind Power System in Microgrids

Xu,

Xiu,

et al. 2023

Processes

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In order to solve the current fluctuation problem in microgrids, a suppression method called the Direct-driven Permanent Magnet Synchronous Generator (DPMSG)-based Wind Power System (WPS) based on an adaptive enhanced moving average filter algorithm is proposed. Firstly, the mathematical model of the WPS is established. On this basis, the suppression method under unbalanced conditions is derived by the instantaneous power equation to ensure the stable operation of the microgrid. In order to improve the dynamic compensation capability of the DPMSG-based WPS, an enhanced moving average filtering algorithm with frequency adaptability is proposed. The positive and negative sequence components are obtained in the dq frame by this filtering algorithm. Subsequently, the angular frequency of the microgrid is obtained according to the changing phase, which realizes the high-performance control of the WPS and avoids the complicated parameter adjustment of traditional methods. The correctness of this method is verified by the simulation results. The DPMSG-based WPS with the proposed method can improve the stability of the microgrid.

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A Sub-Synchronous Oscillation Suppression Strategy Based on Active Disturbance Rejection Control for Renewable Energy Integration System via MMC-HVDC

Cited by 5 publications

References 30 publications

Stability Analysis via Impedance Modelling of a Real-World Wind Generation System with AC Collector and LCC-Based HVDC Transmission Grid

Stability Analysis via Impedance Modelling of a Real-World Wind Generation System with AC Collector and LCC-Based HVDC Transmission Grid

Research on Sub-Synchronous-Oscillation Energy Analysis and Traceability Method Based on Refined Energy

Disturbance-Suppression Method of Direct-Driven PMSG-Based Wind Power System in Microgrids

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