Transient Stability Analysis for Grid-Forming Inverters Transitioning from Islanded to Grid-Connected Mode

Liu, Teng; Wang, Xiongfei; Liu, Fangcheng; Xin, Kai; Liu, Yunfeng

doi:10.1109/ojpel.2022.3189801

Cited by 15 publications

(2 citation statements)

References 28 publications

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“…Currently, although the small-signal stability of GFM-based converters/wind generators has been widely analyzed, the transient characteristics still need more studies, which belongs to a large-signal problem, including grid voltage dip, phase jump, etc (Pan et al, 2020;Chen et al, 2022;Huang et al, 2022c;Liu et al, 2022;Luo et al, 2023). However, it is very difficult to analyze the stability of a high-order (i.e., higher than second-order) nonlinear system.…”

Section: Analyzing Transient Stability Of Gfm-based Wind Generatorsmentioning

confidence: 99%

Challenges and potential solutions of grid-forming converters applied to wind power generation system—An overview

Huang

Zhou

et al. 2023

Front. Energy Res.

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As the capacity of wind power generation increases, grid-forming (GFM) wind turbine generators are deemed as promising solutions to support the system frequency for future low inertia power grids. So far, the GFM converter with a nearly ideal dc voltage source has been studied thoroughly. However, when the GFM converter is applied to wind power applications, there are some realistic problems and challenges, such as coordinating wind turbine control and GFM control, limited energy to support the grid, variable wind speed, etc. These problems still need more discussion. In this paper, an overview of challenges and potential solutions of GFM converters applied to wind power generation systems are provided, where different energy reserving schemes, GFM control schemes, and overcurrent protection schemes are compared and discussed. Finally, a few perspectives on future trends are shared according to the authors’ knowledge.

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Section: Analyzing Transient Stability Of Gfm-based Wind Generatorsmentioning

confidence: 99%

Challenges and potential solutions of grid-forming converters applied to wind power generation system—An overview

Huang

Zhou

et al. 2023

Front. Energy Res.

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“…For each control strategy, the full-order state-space model is derived. Additionally, by analyzing the stability of the converter under different grid strengths [29], this research can offer guidance for selecting a proper control. Ultimately, this paper also explores the favorable influence of the B2B converter on power quality and system dynamics in detail.…”

Section: Introductionmentioning

confidence: 99%

Power Quality Enhancement of Remote Gas Field Generations with Smart Power Converters

Li,

Liu,

2023

Energies

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Direct power generation near gas fields offers numerous benefits, including optimized economic efficiency and reduced environmental impact. Moreover, building on-site greenhouses emerges as a promising approach to further minimize carbon emissions and residual heat, greatly promoting resource utilization. However, such power plants generally have access to a weak grid due to their remote locations, and they also contain nonlinear local loads, such as the grow lights in the greenhouses. Consequently, the generation system is susceptible to power quality issues, manifested in overvoltage and harmonics. To address these issues, a smart back-to-back converter is employed to interconnect the gas turbine generator and the utility grid. This smart converter not only enhances power quality but also offers potential ancillary services that contribute to the dynamics of the gas generation system, such as damping low-frequency oscillation among parallel-connected generators. In this paper, three control configurations for the back-to-back converter are developed, enabling the coordinated regulation of exported active power, AC voltage, and DC-link voltage in either a grid-following or grid-forming manner. Furthermore, comparative studies are conducted to provide guidelines for selecting an appropriate control strategy that ensures stable operation under various short circuit ratios. A practical gas cogeneration system is chosen to evaluate the performance of the back-to-back converter, and real-time simulations based on RT-LAB are carried out to validate the effectiveness of the methodology.

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Modeling and Deep Reinforcement Learning Based Control Parameter Tuning for Voltage Source Converter in a Renewable Energy Generation System

Xing,

Zhang,

Wang

et al. 2024

J. Electr. Eng. Technol.

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Transient Stability Analysis for Grid-Forming Inverters Transitioning from Islanded to Grid-Connected Mode

Cited by 15 publications

References 28 publications

Challenges and potential solutions of grid-forming converters applied to wind power generation system—An overview

Challenges and potential solutions of grid-forming converters applied to wind power generation system—An overview

Power Quality Enhancement of Remote Gas Field Generations with Smart Power Converters

Modeling and Deep Reinforcement Learning Based Control Parameter Tuning for Voltage Source Converter in a Renewable Energy Generation System

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