Grid-Forming Control for Solar Generation System with Battery Energy Storage

Solar generation systems with battery energy storage have become a research hotspot in recent years. This paper proposes a grid-forming control for such a system. The inverter control consists of the inner dq-axis current control, the dq-axis voltage control, the phase-locked loop (PLL) based freque...

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Bibliographic Details
Published in:Energies (Basel) 2024-08, Vol.17 (15), p.3642
Main Authors: Cai, Yupeng, Yu, Lujie, Wu, Meng, Lv, Shengyang, Fu, Ziyu, Tong, Wenhao, Li, Wei, Shi, Songjie
Format: Article
Language:English
Subjects:
Alternative energy sources
Analysis
Batteries
battery energy storage
Electricity distribution
Energy management systems
Energy resources
Energy storage
frequency control
grid-forming control
inverter control
Renewable resources
Solar energy
solar generation
Systems stability
Wind power
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Summary:Solar generation systems with battery energy storage have become a research hotspot in recent years. This paper proposes a grid-forming control for such a system. The inverter control consists of the inner dq-axis current control, the dq-axis voltage control, the phase-locked loop (PLL) based frequency control, and the DC voltage control. The proposed control embeds the PLL into the grid-forming inverter control, offering the advantages of better synchronization and fault current-limiting capability. With the proposed control, the battery energy storage is able to provide inertial and primary frequency support during the grid frequency disturbance. Simulation models are established in PSCAD/EMTDC, and the results during the active power variation and AC voltage variation, the grid frequency disturbance, grid fault, and mode switch validate the effectiveness of the proposed control.
ISSN:1996-1073
1996-1073
DOI:10.3390/en17153642