Adaptive Inertia and Damping Coordination (AIDC) Control for Grid-Forming VSG to Improve Transient Stability

Wang, Lei; Zhou, Hao; Hu, Xuekai; Hou, Xiaochao; Su, Can; Sun, Kai

doi:10.3390/electronics12092060

Cited by 5 publications

(2 citation statements)

References 39 publications

(105 reference statements)

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“…For example, SGs use the power system stabiliser unit for oscillation damping, whereas VSGs face oscillations when connected to the grid [80]. The advantage of using the VSG is its controllability, shown in the flexibility of designing the coefficients J and D p for the desired inertia and damping responses, unlike the SG, which is limited by its physical characteristics [81].…”

Section: Synchronvertermentioning

confidence: 99%

Grid-Forming Control: Advancements towards 100% Inverter-Based Grids—A Review

Ebinyu,

Abdel-Rahim,

Mansour

et al. 2023

Energies

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Changes are being implemented in the electrical power grid to accommodate the increased penetration of renewable energy sources interfaced with grid-connected inverters. The grid-forming (GFM) control paradigm of inverters in active power grids has emerged as a technique through which to tackle the effects of the diminishing dominance of synchronous generators (SGs) and is preferred to the grid-following (GFL) control for providing system control and stability in converter-dominated grids. Therefore, the development of the GFM control is important as the grid advances towards 100% inverter-based grids. In this paper, therefore, we aim to review the changing grid scenario; the behaviour of grid-connected inverter control paradigms and major GFM inverter controls, including their modifications to tackle low inertia, reduced power quality, fault-ride through capability, and reduced stability; and the state-of-the-art GFM models that are pushing the universality of GFM inverter control.

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Section: Synchronvertermentioning

confidence: 99%

Grid-Forming Control: Advancements towards 100% Inverter-Based Grids—A Review

Ebinyu,

Abdel-Rahim,

Mansour

et al. 2023

Energies

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“…Conventional grid-following (GFL) inverters are synchronized with the grid through the phase-locked loop (PLL), and their proper operation relies on the presence of a voltage source in the system which can build a voltage reference. However, more IBRs also lead to faster system dynamics, and the stable operation of the GFL will be affected, resulting in a lack of voltage support and inertial responsiveness of the grid [3,4].…”

Section: Introductionmentioning

confidence: 99%

Disturbance Rejection Control of Grid-Forming Inverter for Line Impedance Parameter Perturbation in Weak Power Grid

Huang,

2024

Electronics

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When a grid-forming (GFM) inverter is connected to a low- or medium-voltage weak power grid, the line impedance with resistive and inductive characteristics will cause power coupling. Typical GFM decoupling control strategies are designed under nominal line impedance parameters. However, there are deviations between the nominal line impedance and actual parameters, resulting in poor decoupling effects. Aiming at this problem, this paper proposes a power decoupling strategy based on a reduced-order extended state observer (RESO). Firstly, the power dynamic model of the GFM is established based on the dynamic phasor method. Then, the model deviation and power coupling due to line impedance parameter perturbation are estimated as internal disturbances of the system, and the disturbances are compensated on the basis of typical power control strategy and virtual impedance decoupling. Good decoupling performance is obtained under different impedance parameters, improving the control strategy’s robustness. Finally, the effectiveness of the proposed method is verified by the results of RT Box hardware-in-the-loop experiments.

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