Research on Hierarchical Droop Control of DC Microgrid Based on Compensated Intercept Voltage

Zian HU; Zifan ZHANG; Gan WANG

doi:10.16513/j.2096-2185.DE.2308105

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Distributed Energy ›› 2023, Vol. 8 ›› Issue (1) : 39-48. DOI: 10.16513/j.2096-2185.DE.2308105

Basic Research

Research on Hierarchical Droop Control of DC Microgrid Based on Compensated Intercept Voltage

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Abstract

Aiming at the contradiction that the shunt accuracy and the bus voltage deviation are difficult to adjust at the same time in the traditional droop control method, an improved droop control strategy based on compensated intercept voltage is proposed. Firstly, the principle of traditional sagging control is analyzed, and the disadvantages of traditional sagging control are pointed out. Secondly, the principle of improved droop control is put forward, and the overall control model is improved. Finally, the corresponding mathematical model and circuit model are built in Matlab/Simlink and PSCAD, and the corresponding parameters are calculated and set to verify the stability and effectiveness of the proposed control strategy.

Key words

DC microgrid / droop control / shunt accuracy / bus voltage deviation / compensated intercept voltage

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Zian HU , Zifan ZHANG , Gan WANG. Research on Hierarchical Droop Control of DC Microgrid Based on Compensated Intercept Voltage[J]. Distributed Energy Resources. 2023, 8(1): 39-48 https://doi.org/10.16513/j.2096-2185.DE.2308105

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Funding

Guangdong Higher Education Teaching Reform Project (Research and Practice on Basic Course Teaching Reform of Electrical Engineering Major for Cultivating "Purple Collar" Talents)