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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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Voltage Weak DC Distribution Grids [PDF]
Electric Power Components and Systems, 2017 AbstractThis paper describes the behavior of voltage weak DC distribution systems. These systems have relatively small system capacitance. The size of system capacitance, which stores energy, has a considerable effect on the value of fault currents, control complexity, and system reliability.
Tsegay Gebremedhin Hailu +3 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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Frontiers in Energy Research, 2023 In response to the high uncertainty of large-scale new energy output in the electrical energy system (EES) and the weak controllability of energy output at multiple time scales, this paper proposes a weak grid identification model for transient energy ...
Shi Qiu +6 more
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