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An improving control strategy for grid -connected current in weak grid [PDF]
E3S Web of Conferences, 2021 The traditional proportional feedforward control strategy can suppress the low order harmonics in the strong power grid, but in the weak power grid environment, the grid impedance will have an adverse impact on the stability of the system, resulting in ...
Songyuan Deng, Xia Zhao
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Active Damping Adaptive Controller for Grid-Connected Inverter Under Weak Grid [PDF]
IEEE Access, 2021 The stability of grid-connected inverters is very sensitive to varying grid impedance, especially in the weak grid condition. In this paper, based on the Lyapunov method and with the micro-grid impedance identification, an active damping adaptive control
Hong Li +4 more
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Adaptive PI + VPI Harmonic Current Compensation Strategy under Weak Grid Conditions
Applied Sciences, 2023 With the increase of the penetration rate of renewable energy power generation in the power system, the power grid gradually tends to be weak. Under the scenario of nonlinear load connecting to weak power grid, the grid-side voltage will produce ...
Lili Zhou, Wei Han, Jia Qi, Zhen Zhou
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Dynamic Stability Study of Grid-Connected Inverter Based on Virtual Synchronizer under Weak Grid
Energies, 2022 The power grid has the characteristics of a weak grid with an increase in new energy penetration in the power system. Power electronic-based renewable generation brings issues that weaken the entire system, including the loss of inertia.
Yinghui Li +4 more
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Inertia Emulation Through Supercapacitor for a Weak Grid
IEEE Access, 2021 Renewable energy sources (RES) have been widely incorporated into the power generation to offset fossil fuels in order to minimize carbon emissions.
Ratnam Kamala Sarojini +1 more
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Optimization of the operation of smart rural grids through a novel rnergy management system [PDF]
, 2017 The paper proposes an innovative Energy Management System (EMS) that optimizes the grid operation based on economic and technical criteria. The EMS inputs the demand and renewable generation forecasts, electricity prices and the status of the distributed
Díaz González, Francisco +2 more
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Frontiers in Energy Research, 2023 With the sustained popularity of renewable energy generation, high penetration of variable energies, e.g., wind and solar, is reshaping the form of power systems and weakening the strength of the grid.
Zhi Xu +10 more
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Current-Harmonic-Based Active Damping Strategy
Zhongguo dianli, 2023 The voltage-harmonic-based active damping control (VHBAD) can improve the adaptability of the converter to the weak grid, but it will weaken the suppression ability of background harmonic voltage disturbance and affect the quality of grid-connected ...
Jia XU, Shude YANG, Xinwen ZHANG
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A New Type of Weak Grid IBR Oscillations
IEEE Transactions on Power Systems, 2023 This letter presents the discovery of a new type oscillations associated with inverter-based resources (IBRs) in weak grids. While typical weak grid oscillations become worse when the grid strength decreases and the power exporting level increases, this ...
Lingling Fan, Zhixin Miao, Zhengyu Wang
semanticscholar +1 more source
IET Renewable Power Generation, 2023 Integrating Power Electronics Converters (PECs)‐based renewable energy sources can establish a weak grid due to the substantial inertia reduction leading to severe frequency fluctuations. In this paper, a control strategy based on the Virtual Synchronous
Saeed Hosseinnataj +3 more
semanticscholar +1 more source