Abstract
In the process of switching from grid-connected to isolated island mode, photovoltaic microgrid is intermittent and uncertain, which is often improved by traditional droop control. Under this control mode, the adjustment and distribution ability of micro-power supply load power is insufficient, which leads to the system power distribution not being optimized, and the grid frequency fluctuation deviation is large. This paper analyzes the basic principle of increased droop control efficiency method by using virtual impedance, designing the optimized droop control method. By introducing virtual impedance, the control strategy realizes automatic power decoupling control. The optimized droop control method can effectively enhance the power control sharing effect of microgrid, and improve the power quality. Simulation result proves not only the effectiveness but also the practicability of the proposed control method.
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Acknowledgements
This research was supported by Zhejiang Provincial Basic Public Welfare Research Project of China under Grant No. LGG21F030001.
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Chen, H., Xu, R., Meng, J. (2022). Droop Control Strategy of Microgrid Anti-island Based on Virtual Impedance. In: J. Jansen, B., Liang, H., Ye, J. (eds) International Conference on Cognitive based Information Processing and Applications (CIPA 2021). Lecture Notes on Data Engineering and Communications Technologies, vol 85. Springer, Singapore. https://doi.org/10.1007/978-981-16-5854-9_83
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DOI: https://doi.org/10.1007/978-981-16-5854-9_83
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