Research on Large-Signal Stability of DC Microgrid Based on Droop Control

Haifeng Liang, Yuxi Huang, Hao Sun and Zhiqian Liu
Additional contact information
Haifeng Liang: Department of Electrical Engineering, North China Electric Power University, Baoding 071003, China
Yuxi Huang: Department of Electrical Engineering, North China Electric Power University, Baoding 071003, China
Hao Sun: Department of Electrical Engineering, North China Electric Power University, Baoding 071003, China
Zhiqian Liu: Department of Electrical Engineering, North China Electric Power University, Baoding 071003, China

Energies, 2019, vol. 12, issue 16, 1-14

Abstract: Ensuring the large signal stability of the DC microgrid is the premise of the safe operation of the DC microgrid, but the research on the large-signal stability of microgrids with multiple droop control micro-sources is still scarce. In this paper, a DC microgrid system model with multiple droop control micro-sources was established by appropriate simplification. Addressing the problem that most stability research methods cannot be quantitatively analyzed, the mixed potential function method was used to analyze the large signal stability of the system. However, the criterion obtained by the conventional mixed potential function method is complicated and contains multiple time-varying parameters, which is not convenient for analysis. Therefore, the simple form of the criterion was obtained through simplification and the analysis proved the rationality of the simplification. On this basis, a nonlinear droop control method was proposed to improve the anti-interference ability of the system. Finally, the accuracy of the large signal stability criterion and the effectiveness of nonlinear droop control on the system’s large signal stability were verified by simulation.

Keywords: DC microgrid; large signal stability; mixed potential function; nonlinear droop control (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2019
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

Downloads: (external link)
https://www.mdpi.com/1996-1073/12/16/3186/pdf (application/pdf)
https://www.mdpi.com/1996-1073/12/16/3186/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jeners:v:12:y:2019:i:16:p:3186-:d:259132

Access Statistics for this article

Energies is currently edited by Ms. Agatha Cao

More articles in Energies from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().