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Synchronous condenser applications for a weak grid
2023This panel session discusses the application of synchronous condensers to improve power system performance, particularly systems with a high proportion of inverter based sources. Presentations in this panel session: - Introduction to panel: Update on SynCon Interest Group Activity (23PESGM4014) - SynCon parameter study: Different transient and sub ...
K. Chen +4 more
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Regulator reconstruction strategy of grid-connected inverter in weak grid
2016 IEEE 8th International Power Electronics and Motion Control Conference (IPEMC-ECCE Asia), 2016In order to suppress LCL inherent resonance and grid background harmonic problems, virtual impedance control based on capacitor current feedback and grid voltage feedforward control strategies are typically introduced in grid-connected inverters. However, the inverter control strategy can't make the system operate stably in a weak grid.
null Qinglin Zhao +4 more
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Control of a grid connected converter during weak grid conditions
2016 IEEE 7th International Symposium on Power Electronics for Distributed Generation Systems (PEDG), 2016The focus on renewable energy sources have been increasing since the late 80s in Denmark. Especially focus on wind power has been increasing, with implementation of big on- and offshore wind farms. However, when installing the wind farms, these are often placed distant from the utility grid, like the case for offshore wind turbines.
Lorenzen, Søren Lund +2 more
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Stability Control for Wind in Weak Grids
IEEE Transactions on Sustainable Energy, 20194 Hz oscillations and 30 Hz oscillations have been observed in real-world wind farms with weak grid interconnections. Such stability issues limit wind power delivery. This paper proposes mechanism-based feedback control strategies suitable for vector control based voltage source converters employed in Type-3 and Type-4 wind to enhance the overall ...
Yin Li, Lingling Fan, Zhixin Miao
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Research on Self-synchronization Strategy of Grid-connected Inverters in Weak Power Grid
IECON 2020 The 46th Annual Conference of the IEEE Industrial Electronics Society, 2020In order to ensure good power quality, the grid-connected inverter mostly uses phase-locked loop (PLL) to maintain synchronization with large power grid. But the PLL will cause a negative-impact on the stability of grid-connected inverter under weak grids. The paper analyzes the equivalent impedance of the PLL under the weak grid firstly.
Xuemei Zheng +2 more
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Control of Grid-Tied Inverter with L Filter in Weak Grid Considering Grid Impedance and Harmonics
IECON 2018 - 44th Annual Conference of the IEEE Industrial Electronics Society, 2018Inductor filter is widely used in grid-tied inverters. If an inverter with inductor filter operates in weak grid condition, voltage measurement error may exist due to the voltage sensor delay and the voltage drop on grid impedance. This can further lead to errors in the phase lock loop (PLL) and even system instability.
Hao Tu +5 more
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An Improved Grid Voltage Feedforward Compensation Scheme of Grid-Connected Inverter in Weak Grid
2018 IEEE International Power Electronics and Application Conference and Exposition (PEAC), 2018The grid voltage feedforward control strategy is widely used in the grid-connected inverter, aiming to reduce the disturbance of grid voltage distortion and suppress the impulse current of inverter at startup. However, an extra positive feedback channel will be introduced into the current control loop in weak grid, bringing low harmonics and even ...
Ming Li +4 more
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Synchronization Stability of 3-phase Grid Connected Inverters in Weak Grids
IECON 2022 – 48th Annual Conference of the IEEE Industrial Electronics Society, 2022Sugoto Maulik, Vinod John
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COMPARATIVE STABILITY ASSESSMENT OF GRID-FOLLOWING AND GRID-FORMING VSCS IN WEAK GRIDS
IET Conference Proceedings, 2021L. Yuan +5 more
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Grid-Forming Converters in Weak Grids – The Case of a Mediterranean Island
2019The existing power network of a Mediterranean island is used as test bed for the study of grid-forming converter dynamics in weak grid conditions. The control scheme adopted for the converter falls in the category of the so called virtual synchronous machines (VSM). Particular attention is committed to the interaction between the converter controls and
R. Musca, G. Zizzo, M. Bongiorno
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